comp1 Flashcards

Question

25. Which of the following groups consist of only input devices ?(a) Mouse, Keyboard, Printer(b) Mouse, Keyboard, Monitor(c) Mouse, Keyboard, Plotter(d) Mouse, Keyboard, Scanner(e) None of these

Answer 1

(d)Explanation: (d) Mouse, Keyboard, Scanner are input devices that helps the user in entering data in form of numbers letters, symbols, image, commands into the computer for further processing. • Monitor, printer and plotter are output devices that disply the result of processing (output) to the user.

Answer 2

(d)Explanation: (d) A wirelers device can refer to any kind of communication equipment that doesn't require a physical wire for relaying information to another device. Wireless communication travel over the air via electromagnetic waves (radio frequencies, infrared, satellite, etc).

Answer 3

(a)Explanation: (a) Every website has a unique address to identify it on World Wide Web. This address is called as web address or Uniform Resource Locator (URL). Like your home address, URL also contains different parts, Domain name in URL is the unique address that identifies the location of the website. eg. http://www. example .com. here, example .com is domain name; http://. is the protocol used to access this website and WWW is a sub domain.

Answer 4

(b)Explanation: (b) Data is raw, unorganized facts that needs to be processed. Data can be something simple or seemingly random and useless until it is organised. When data is processed, organized, structured, or presented in a given context so as to make it useful, it is called information.

Answer 5

(b)Explanation: (b) Email spam (or junk email or unsolicited bulk message) is the use of electronic messaging systems to send unsolicited bulk messages, especially advertising, indiscriminately. It involves flooding the internet with the many copies of the same message, in an attempt to force the message on people who would not otherwise choose to receive it.

Answer 6

(b)Explanation: (b) When a computer is started there is an operation which is performed automatically by the computer which is called as Booting. In booting, system checks all the hardware and softwares that are attached with or installed on the system and also loads all the files that are needed for running the system.

Answer 7

(b)Explanation: (b) A filename is a name given to a computer file in order to distinguish it from other files. It may contain extension that indicates the type of file.

Answer 8

(d)Explanation: (d)A disk drive refers to a computer peripheral which uses fixed or removable magnetic or optical disks for data storage and retrieval. It reads data form and writes data onto magnetic or optical disks. There are different types of disk drives for different types of disks. eg. hard disk drive (HDD) for hard disks, Floppy disk drive (FDD) for floppy disks, optical drives for optical disks.

Answer 9

(a)Explanation: (a) In an email, the body (context text) is always preceded by header lines that identify particular routing information of the message, including the sender, recipient, date and subject.Although, FROM, To, and DATE headers are automatically completed by mail transfer agent (MTA). FROM: indicates sender's name and email address and DATE: indicates sent date/time of the email.

Answer 10

(d)Explanation: (d) The Internet is a global network connecting millions of computers. It is a network of networks that consists of millions of private, public, academic, business and government networks, of local to global scope, that are linked by a broad array of electronic and optical networking technologies. With the help of Internet, user can view web pages on World Wide Web. Also, it facilitates communication around the globe via applications like chat, email, video-conferencing, Internet telephony, etc.

Answer 11

(b)Explanation: (b) Editing is the process of reading through the already created document for the purpose of making it more professional in look and appearance by formatting it. Also, it is done to correct errors. For this, grammar & spelling check, auto-correct, find and replace, etc features can be used. Editing is done before the final copy of the document is saved or a final print out is taken.

Answer 12

(a)Explanation: (a) Navigation keypad comprises of a variety of keys which move the cursor to different positions on the screen. They are used for moving around in documents or webpages and editing text. They include arrow keys, HOME, END, PAGE UP, PAGE DOWN, DELETE and INSERT. For eg. Arrow keys are programmed to move the cursor in a specified direction-left, right, up or down.

Answer 13

(d)Explanation: (d) File compression is the reduction in size of data in order to save space on storage medium or transmission time. Compression software allows the user to take many files and compress them into one file, which is smaller than the combined size of the originals. The compressed files make downloading faster, easier and allows more data to be stored on a removable media. Common compressed file extensions are .ZIP, .RAR, .ARJ, etc.

Answer 14

(c)Explanation: (c) A modifier key is a special key on computer keyboard that temporarily modifies the normal action of another key when pressed together. Alt, Shift, Ctrl are modifier keys. • Shift- gives capital letters or to access the punctuation and other symbols on the number keys and other keys. eg. Shift + A gives output capital letter A. • Ctrl- Used in combination with other keys as shortcuts for menu commands, eg. Ctrl + S activates the save command. • Alt- Works as menu - command shortcuts. eg. Alt + F4 closes the active window on the desktop.

Answer 15

(b)Explanation: (b) A personal computer is a microcomputer designed for use by only one person at a time. It is based on a microprocessor technology that enables manufacturers to put an entire CPU on one chip. Business use PC for word processing, accounting, desktop publishing, and for running spreadsheet and database management applications. At home, the most popular use for PC is for playing games.

Answer 16

(b)Explanation: (b) The general format of an email address is example @ computer .com. It consists of two parts: the part before the @ sign is the locate part of the address, often the username of the recipient (example) and the part after the @ sign is a domain name to which the email message will be sent (computer.com)

Answer 17

(d)Explanation: (d) The first thing that a computer does when it boots is to perform what is called the Power on Self Test (or POST). The POST is a built- in diagnostic program that checks your hardware to ensure that everything is present and functioning properly, before the BIOS begins the actual boot. It later continues with additional tests (such as the memory test that you see printed on the screen) as the boot process is proceedings.

Answer 18

(b)Explanation: (b) A compiler is a software program that translates a source program written in some high level language (such as C, C++, Java) into machine code for some computer architechture (such as Intel Pentium architecture). The generated machine code can be later executed many times against different data each time.

Answer 19

(d)Explanation: (d) A subdirectory is a directory within answer directory or a folder within a folder. All directories can become a subdirectory except for the master directory, which is typically referred to as the root directory or the parent directory.

Answer 20

(a)Explanation: (a) The primary purpose of the software is to turn raw data into meaningful information after processing. For example- raw data such as number of hours an employee has worked in a month and his pay rate, when entered into the payroll software, gives his salary for that month as an output.

Answer 21

(a)Explanation: (a) My Documents folder is a component of the user profile that is used as a unified location for storing personal data. By default, My Documents folder is a folder in the user's profile that is used as a default storage location for saved documents.

Answer 22

(d)Explanation: (d) Multiprocessing, in computing, is a mode of operation in which two are more processors in a computer simultaneously process two or more different portions of the same program (set of instructions). Multiprocessing is typically carried out by two or more microprocessors, each of which is in effect a CPU on a single tiny chip. Super computers typically combine thousands of such microprocessors to interpret and execute institutions.

Answer 23

(b)Explanation: (b) Recycle bin is a waste basket icon on windows desktop that works as a location or Directory or deleted files or folders. All deleted files & folders are temporarily stored here before final deletion.

Answer 24

(b)Explanation: (b) A programming language is a formal language designed to communicate instructions to a machine, particularly a computer. It can be used to create programs that control the behaviour of a machine and/or express algorithms precisely. The description of a programming language is usually split into the two components of syntax (form) and semantics (meaning).

Answer 25

(c)Explanation: (c) The hardware, in computer, refers to the physical equipment required to create, use, manipulate and store electronic data. It comprises of the system unit (the core architechture of the computer system that house primary components of a computer like CPU, memory, motherboard, etc); Input devices (eg. Keyboard, Mouse,etc); Output devices (eg. Printer, Screen, etc); and storage devices (eg. Hard disk, Floppy disk, USB,etc).

Answer 26

(c)Explanation: (c) A filename is the name used to uniquely identify a computer file stored in a file system. The filename usually consists of an extension that indicates what type of file it is.

Answer 27

(c)Explanation: (c) A hard copy is a physical reproduction or representation of the data or information from a computer. Such as printed page or photograph. A hard copy is so-called because it exists as a physical object.

Answer 28

(c)Explanation: (c) Execution is the part of the instruction cycle when data processing actually takes place. The instruction is carried out upon the data (executed). That is, when the command is executed, the CPU carried out the instructions in order by converting them into macrocodes. Also, the result of the processing is stored in memory by CPU.

Answer 29

(b)Explanation: (b) The main function of the Arithmetic Logic Unit (ALU), present in CPU, is to perform arithmetic operations like addition, subtraction, multiplication, division and logical comparisons such as greater than, less than, equal to, AND, NAND, etc.

Answer 30

(b)Explanation: (b) Binary numbers are closely related to digital electronics. With digital electronics, a '1' means that current is present and a '0' means it is not present. The different parts of a computer communicate through pulses of current (1s and 0s). Computers can calculate complex equations and perform complex calculations. Calculating using only 1s and 0 s is called Binary system. A computer can process only 1s and 0 s.

Answer 31

(b) Explanation: (b) A password is a secret word or string of characters used for user authentication to prove identify or access approval to gain access to a resource (eg. a software, website on World Wide Web, etc); which should be kept secret from those not allowed access.

Answer 32

(d)Explanation: (d) Any information that has been processed and comes from a computer or computer device is considered output. When someone is viewing output, they're seeing it on an output device such as monitor or a hard copy print out, or sound from speakers.

Answer 33

(c)Explanation: (c) A software bug is an error, flaw, failure or fault in a computer program that produces an incorrect or unexpected result or causes it to behave in unintended ways.

Answer 34

(d)Explanation: (d) Computer systems comprises of 5 basic parts: • People- end user of the computer system. • Procedure- are rules & guidelines to follow when using software, hardware and data. Typically, documented in manuals. • Software (programs)- provides step-by-step instructions to control the computer to convert data into information. • Hardware- Consists of physical equipments which is controlled by software and process data into information. • Data: Consist of unprocessed facts. ®Connectivity is an additional part to computer systems that allows computers to connect and share information.

Answer 35

(d)Explanation: (d) An Integrated Circuit (IC) is a small electronic device made out of a semiconductor material. IC, sometimes called a chip or Microchip, is a semiconductor wafer on which thousands or millions of tiny resistors, capacitors and transistors are fabricated. ICs can be used for variety of devices such as micro processors, audio & video equipment and automobiles.

Answer 36

(b)Explanation: (b) A utility program allows a user to perform maintainence type tasks usually related to managing a computer, its devices or its programs. It makes computer easier to use. For eg. Windows utility called Disk Defragmenter locates and eliminates unnecessary file fragments and rearranges files and unused disk space to optimize computer operations.

Answer 37

(c)Explanation: (c) A bit (short for binary digit) is the smallest unit of data in a computer. A bit has a single binary value, either 0 or 1.

Answer 38

(a)Explanation: (a) A back up refers to the copy and archive of computer data to a different location so that it may be used to restore the original data after a data loss event, eg. equipment failure or catastrope.

Answer 39

(c)Explanation: (c) Print option is available under file menu in most of the applications of windows. On clicking the Print option, a Print dialog box appears. A user can change print settings according to his/her choice and then finally select the Print button.

Answer 40

(d)Explanation: (d) A computer program is a sequence of instructions, written to perform a specified task with a computer. A computer requires programs to function, typically executing the program's instructions in a central processor. The series of instructions when executed, causes the computer to behave in a predetermined manner.

Answer 41

(b)Explanation: (b) A computer programmer write code or instructions to make the computer do specific tasks. These instructions are called programs. Before writing the code, the programmer gets the algorithm from a software engineer. To write those instructions, programmers use programming languages such as C, C++, Java, Cobol, etc.

Answer 42

(a)Explanation: (a) Multitasking refers to the ability to execute more than one task (or program) at the same time. In multitasking, only one CPU is involved, but it switches from one program to another so quickly that it gives the appearance of executing all of the programs at the same time.

Answer 43

(b)Explanation: (b) A page preview is a special mode of modern programs that provide an accurate view of what a full printed page would look like. It enables the user to view all pages of his/her document beforing taking actual print out.

Answer 44

(c)Explanation: (c) An application program refers to programs designed to make users more productive and/or assist them with personal tasks. eg. Word processing software, spreadsheet software, database software, etc. Application programs use the services of the computer's operating system and other supporting programs.

Answer 45

(a)Explanation: (a) A search engine is a webbased tool that enables users to locate information on the world wide web. eg. Google, Yahoo , MSN etc. search engine utilize automated software applications (referred to as robots, bots or spiders) that travel along the web, following links from page to page, site to site. The information gathered by the spiders is used to create a searchable index of the web.

Answer 46

(b)Explanation: (b) A file in a computer is a collection of information stored/ saved electronically and treated as a unit by a computer. Every file must have its own distinctive name.

Answer 47

(c)Explanation: (c) The home key moves the cursor to the top left corner of the screen (i.e, beginning of the document) or to the beginning of the line of a document.

Answer 48

(c)Explanation: (c) A database is an integrated collection of logically related records or files. A database consolidates records previously stored in seperate files into a common pool of data records that provide data for many applications. The data is managed by system software called database management system (DBMS).

Answer 49

(c)Explanation: (c) A compact Disc (CD) is a small, portable round medium made of moulded polymer for electronically recording, storing, and playing back audio, video, text and other information in digital form. Different types of CD include CD-ROM, CD-R, CDRW, DVD, etc.

Answer 50

(c)Explanation: (c) DOC is a document file format used by Microsoft Word, also used with most word processing software, including open office. DOC stands for Document file. A DOC file can contain formatted text, images, tables, graphs, charts, page formatting and print settings.

Answer 51

"(a)Explanation: (a) When you are working with longer documents, it can be difficult and time consuming to locate a specific word or phrase. Word can automatically search your document using the ""Find"" feature. This makes it easy to find the word or phrase you are looking for without having to scan long documents."

Answer 52

(d)Explanation: (d) A computer's main memory (or random access memory) is the memory used to store data and programs on a temporary basis. The RAM is compared to shortterm or volatile memory, as it stores applications and information that is actively used while the system is on.

Answer 53

(c)Explanation: (c) • New command under file menu creates/opens a new, empty, text window (document) or spreadsheet. • The open command opens an existing file into a new window. • Close command closes the current window. • Save command saves the current window into a file. If the window is already associated with a file, the contents are saved to that file.

Answer 54

(d)Explanation: (d) Reusuable optical storage will typically have the acronym RW. For example, CD-RW, DVD-RW, etc. RW stands for re-writtable. This means rewrittable storage medium can be re-written or dozen or many times, the contents can be copied, deleted and modified as necessary.

Answer 55

(d)Explanation: (d) By default, the background color of a MS-Word document is white. However, a user can change the color of his/her own choice. To do this, open word document and choose page layout on the Ribbon, then select page color to select the background color the user wants.

Answer 56

(b)Explanation: (b) User interface refers to the visual part of computer application or operating system through which a user interacts with a computer or a software. It determines how commands are given to the computer or the program and how information is displayed on the screen. Three main types of user interfaces are- command language, Menus and Graphical user interface.

Answer 57

(c)Explanation: (c) When you save a document (or file) for the first time, you will need to mention a name for that document. To do that go to File > Save AS. A file name is used to uniquely identify a computer file stored in a file system.

Answer 58

(d)Explanation: (d) The most common input devices are keyboard and mouse which helps in feeding data into the computer.

Answer 59

(b)Explanation: (b) Alt, Ctrl, and Shift keys are modifier keys. Modifier keys temporarily modifies the normal action of another key when pressed together. They are often used with other keys to perform computer keyboard shortcuts. eg. Ctrl + C is the shortcut to copy text. Alt + F4 in Microsoft windows will close the programe in the active window.

Answer 60

(a)Explanation: (a) A hard disk drive (HDD) is a non-volatile storage device for digital data. That is, it is the computer's main storage media device that permanently stores all data on the computer.

Answer 61

(c)Explanation: (c) Standby (or sleep) mode is a mode the computer, monitor or other devices enters when idle for too long. This mode helps conserve power when a computer or computer device is not in use without having to sacrifice the time it would take to turn off and on the computer.

Answer 62

(b)Explanation: (b) A computer network is a group of computers and other hardware devices that are linked together through communication channels to faci l itate communication and resourcesharing among a wide range of users.

Answer 63

(d)Explanation: (d) In a database, you use data types to specify the type of data each field can capture. you can enter numbers into the number (or numeric) field and then average , sum or perform other calculations with the numbers eg. you can assign a Test Score field a data type of number.

Answer 64

(b)Explanation: (b) In computer, user-friendly refers to something which is easy to learn, understand and deal with. eg. menu-driven programs are considered more userfriendly than command driven systems. Graphical user interfaces are also considered user friendly. They all make it easier for novices to use a computer.

Answer 65

"(c)Explanation: (c) The control unit is the component of the processor that directs and co-ordinates most of the operations in the computer. It is the circuitry that controls the flow of information through the processor and co-ordinates the activities of the other units within it. In a way, it is the ""brain within it brain"", as it controls what happens inside the processor, which in turn controls the rest of the PC."

Answer 66

(d)Explanation: (d) Operating system is a software that controls the operation of a computer, directs the input & output of data, keep track of files and controls the processing of computer programs. Its role include managing the functioning of the computer hardware, running the application programs, serving as an interface between the computer and the user and allocating computer resources to various functions.

Answer 67

(c)Explanation: (c) A gigabyte (GB) is a measure of computer data storage capacity which is equal to 1,024 megabytes (or 230 bytes). It is approximately equal to one billion bytes.

Answer 68

(c)Explanation: 14 (c) A modem (modulatordemodulator) is an electronic device that makes possible the transmission of data to or from a computer via telephone or other communication lines.

Answer 69

(d)Explanation: (d) A worksheet is an arrangement of rows and columns, making up cells into which various types of data and formulas can be entered. Formulas are used to perform calculations in Excel.

Answer 70

(c)Explanation: (c) A bit (short for binary digit) is the smallest unit of data in a computer. A bit has a single binary value, either 0 or 1.

Answer 71

(b)Explanation: (b) Virtual memory refers to the space on the hard drive that the operating system store data to, if you don't have enough random access memory (RAM) to hold all of the programs you're currently trying to run.

Answer 72

(b)Explanation: (1 )A network server is a computer designed to process requests and deliver data to other computers over a local network or the Internet.

Answer 73

(d)Explanation: (d) ROM (read only memory) is a computer memory on which data has been pre recorded. Once data has been written onto a ROM chip, it cannot be removed and can only be read. It retains the contents even when the computer is turned off. It contains programs such as the program that boots the computer.

Answer 74

(a)Explanation: (a) The internet is a global system of inter connected computer networks that use the standard internet protocol suite (TCP/IP) to serve several billion users worldwide.

Answer 75

(a)Explanation: (a) Input allows user to enter or feed data into a computer through input devices such as keyboard, mouse, scanner, etc.

Answer 76

(a)Explanation: (a) A software patch is a piece of software code that can be applied after the software program has been installed to fix a specific issue with that program. Patches are available as downloads over the internet, free of cost.Q101. Which one of the following is a key function of a firewall?(a) Deleting(b) Monitoring(c) Copying(d) Moving(e) None of these (b)Explanation: (b) A firewall is a software or hardware-based network security system that controls the incoming and outgoing network traffic by analyzing the data packets and determining whether they should be allowed through or not, based on a rule set.

Answer 77

(b)Explanation: (b) Every program that's currently installed on your computer is listed in All programs menu. On the start menu. Also, when you install new programs, they get added to the All programs list.

Answer 78

(c)Explanation: (c) HTTP (hyper text transfer protocol) is a set of standards that allow users of the world wide web to exchange information found on web pages. It provides a standard for web browsers and servers to communicate.

Answer 79

(d)Explanation: (d) Fragmentation occurs when a process which are loaded or removed from memory. The free memory space is broken into little pieces, such type of pieces may or may not be of any use to be allocated individually to any process. This may give rise to memory wastage or fragmentation. So, it is a phenomenon in which storage space is used inefficiently, reducing capacity & often performance.

Answer 80

(b)Explanation: (b) TCP/IP (Transmission Control Protocol/ Internet Protocol) is the suite of communication protocols used to connect hosts on the internet. It is the defacto standard for transmitting data over networks.

Answer 81

(b)Explanation: (b) Advantages of email include:- • Speed of delivery : Email are fast. They are delivered at once around the world. • Convenience : Emails are easy to use. You can organize your daily correspondence, send & receive electronic messages and save them on computers. Also, you can read emails at your own convenient time. • Reliability : Transmission is secure and reliable. Email is private. Often telephone and fax messages are not. • Generality : Same message can be sent to many recipients. Also, you can send letters, notes, files, data or reports all using the same techniques.

Answer 82

(e)Explanation: (e) A virtual box is a software virtualization package that install on an operating system as an application. Virtual box allows additional operating system to be installed on it, as a Guest OS, and run in a virtual environment.

Answer 83

(c)Explanation: (c) Microsoft windows is a group of operating systems manufactured by Microsoft.

Answer 84

(a)Explanation: (a) Online marketing/internet marketing/E-marketing is the marketing and promotion of products or services over the internet. Digital marketing is marketing that makes use of electronic devices such as computers, tablets, smartphones, cellphones, digital billboards and game consoles to engage with consumers and business partners. E-marketing is a major component of digital marketing. It has a common base, it is the stream of advertising you choose.

Answer 85

(b)Explanation: (b) A web camera (or web cam) is a real time camera whose images can be accessed using the world wide web, instant messaging or a PC video calling application. It delivers images to a web server, either continuously or at regular intervals.

Answer 86

(d)Explanation: (d) A template is a tool for enforcing a standard layout and look and feel across multiple pages or within content regions. When you change a template, any pages or regions that are based on that template are automatically changed as well . It is something which is pre-formatted.

Answer 87

(c)Explanation: (c) Fonts are designed for a set of characters. It is a graphical representation of text that may include a different typeface, point size, weight or design. eg. Times Roman is a typeface that defines the shape of each character. Within Times Roman, there are many fonts to choose from different sizes, italic, bold, etc.

Answer 88

(b)Explanation: (b) Hardware components of a computer system are physical or tangible parts that can be see or touched. eg. monitor, CPU, printer, etc.

Answer 89

(b)Explanation: (b) Table can contain primary keys as well as foreign keys. Primary keys serve to differentiate records from one another, they can be individual attribute or a combination of attributes. Foreign keys relate or link tables in the database to one another and generally define the parent-child relationship between tables. A foreign key in one table may be primary key in another.

Answer 90

(b)Explanation: (b) The computer hardware refers to the physical parts or components of a computer system that can be seen or touched. They can be classified into input devices, output devices and storage devices.

Answer 91

(a)Explanation: (a) In computers a joystick is a cursor control device used in computer games and assistive technology. It allows an individual to move an object in a game such as navigating a plane in a flight simulator.

Answer 92

(c)Explanation: (c) A repeater is an electronic device that receives a signal and retransmits it at a higher level or higher power or onto the other side of an obstruction, so that signal can cover longer distances. Because repeaters work with the actual physical signal and do not attempt to interpret the data transmitted, they operate on the physical layer, being the first layer of the DSI model.

Answer 93

(d)Explanation: (d) An Integrated circuit (IC), also called a chip or microchip, is a semiconductor wafer on which thousands or millions of tiny resistors, capacitors and transistors are fabricated.

Answer 94

(c)Explanation: (c) All elements whether text or graphics can be displayed in a color. The user can choose color of his/her choice.

Answer 95

(c)Explanation: (c) The CPU (Central Processing Unit) is the brain of the computer that contains the circuitry necessary to interpret & execute program instructions. It comprises ACU (to perform arithmetic calculations such as addition, multiplication, etc and logical comparisons such as EQUAL To, NOT, LESS THAN, etc.) and CU (which co-ordinates the components of a computer system). Most of the processing in a computer is done by CPU.

Answer 96

(b)Explanation: (b) A peripheral device is one which is conected to a host computer but is not a part of the core computer architecture. They are the hardware items for your computer like mouse, keyboard, printer, monitor, etc. They are connected with a computer through several I/O interfaces such as communications (com), universal serial bus (USB) and serial parts.

Answer 97

(a)Explanation: (a) A motherboard (also called mainboard/ system board/logic board) is the main circuit board in a computer. A motherboard provides a way for hardware in a computer to communicate with each other.

Answer 98

(e)Explanation: (e) A backup refers to an operation or procedure of copying and achieving of computer data to an alternative location so that it may be used to restore the original if deleted or becomes corrupted.

Answer 99

(a)Explanation: (a) Data processing is the process of collection and manipulation of data to produce meaningful information. Data is processed under the control of set of instructions called programs.

Answer 100

(d)Explanation: (d) A computer network is a group of computers and other hardware devices that are linked together through communication channels to facilitate communication and resource- sharing among a wide range of users.

Answer 101

(a)Explanation: (a) A hard disk drive (or HDD) is a non-volatile storage device for digital data. That is, it is the computer's main storage media device that permanently store all data on the computer.

Answer 102

(d)Explanation: (d) As a measure of computer disk storage capacity a megabyte (or MB) is 2 to the 20th power bytes or 1,048,576 bytes or 1,000,000 bytes approximately.

Answer 103

(e)Explanation: (e) An operating system is a system software that directs a computer's operations, controlling and scheduling the execution of other programs and managing storage, input/output and communication resources.

Answer 104

(b)Explanation: (b) Computer hardware refers to the physical parts or components of a computer system that can be seen or touched. It can be categorized into input devices (keyboard, mouse, scanner, etc); Output devices (printer, monitor, speaker, etc) and storage devices (optical disks, magnetic disks, pen drives, etc).

Answer 105

(c)Explanation: (c) The surface of a floppy disk is organized into circular rings called tracks. Data is stored on these circular tracks as tiny spots. That is, 0 and 1s are represented magnetically. Each track is divided into pie-shaped groups of sectors.

Answer 106

(d)Explanation: (d) A wireless device can refer to any kind of communication equipment that doesn't require a physical wire for relaying information to another device. Wireless network utilize radio waves and/or micro waves to maintain communication channels between computers and other network devices.

Answer 107

(d)Explanation: (d) A tape drive is a sequential access device because to get to point 'q' on the tape, the drive needs to pass through points 'a' through 'p'.

Answer 108

(c)Explanation: (c) A software bug is a error, flaw, failure or fault in a computer program or system that produces an incorrect or unexpected result or causes it to behave in unintended ways.

Answer 109

(b)Explanation: (b) A compact disc (CD) is a plastic- fabricated, circular medium for recording, storing and playing back audio, video and computer data. Different versions of CD includes CD-ROM, CD-RW, CD-W, etc.

Answer 110

(c)Explanation: (c) In graphical user interfaces such as windows and Macintosh environment, a folder is a container that helps to organize your files. Every file on your computer is stored in a folder, and folders can also hold other folders (Sub-folder). In DOS and UNIX, folders are called directories.

Answer 111

(e)Explanation: (e) A peripheral device is a hardware device that is connected to a computer through cable into several I/O interfaces such as communications (com), univerasal serial bus (USB) and serial parts eg. mouse, printer, monitor, etc.

Answer 112

(b)Explanation: (b) Any meaningful information that has been processed and comes out from a computer or computer device is considered output. Output can appear in a variety of forms- as binary numbers, as characters, as pictures, sound and as printed pages.

Answer 113

(d)Explanation: (d) It takes eight bits to make up an individual character (letter, number or symbol) used in the English language. Each individual character is called as a byte. Therefore, eight bits equal one byte. While a bit is the smallest unit of information, bytes are known as the building blocks for all information that flows through a computer.

Answer 114

(d)Explanation: (d) The components of a computer can be broadly classified into : Hardware and Software. Hardware refers to any physical component that can be seen or touched, eg. CPU, monitor, keyboard, etc. Software refers to the programs which are required to operate the computer, eg. system software, application software etc.

Answer 115

(e)Explanation: (e) A file is a collection of data or information that has a name (filename). Almost all information stored in a computer must be in a file. There are different types of files that store different types of information. For eg. Program files store programs, text files store text, etc.

Answer 116

(d)Explanation: (d) The ALU (arithmetic logical unit) of CPU performs arithmetic operations on integers such addition, subtraction, multiplication and division as well as logical comparisons such as less than, greater than, equal to, etc.

Answer 117

(a)Explanation: (a) The primary purpose of software is to turn data (raw facts or figures) into meaningful information which can be used in decision making. eg. data such as number of hours an employee worked and pay rate when fed into payroll software gives salary of the employee.

Answer 118

(e)Explanation: (e) Input devices are peripheral devices that are used to input data or information into a computer. They convert symbols that people understand into bits that computers can process. eg, keyboard, scanner, magnetic-stripe reader, etc.

Answer 119

(a)Explanation: (a) Keyboard, Scanners and Microphones are examples of input devices that help in feeding input (text, image, sound) to the computer.

Answer 120

(c)Explanation: (c) A file name extension is a suffix (separated from the base file name by a dot or space ) to the name of a computer file applied to indicate the encoding (file format) of its contents or usage. eg. bar, doc, htm, etc.

Answer 121

(e)Explanation: (e) Disk formatting is a process of dividing a disk into tracks and sectors so that the operating system can store and locate data and information on the disk. It is basically a process of preparing a disk for digital data storage by organizing.

Answer 122

(a)Explanation: (a) A cable (or chord/plug/connector) is one or more wires covered in a plastic covering that connects a computer to another device thereby providing communication between devices. eg. a cable that connects monitor to computer and allows computer to display a picture on the monitor.

Answer 123

(a)Explanation: (a) A microprocessor is an electronic component that is used by a computer to do its work. It is a central processing unit on a single integrated chip containing millions of very small components including transistors, resistors and diodes that work together.

Answer 124

(c)Explanation: (c) A floppy disk refers to a flexible plastic disk coated with magnetic material and covered by a protective jacket, used primarily by computers to store data magnetically.

Answer 125

(d)Explanation: 33.(d) ROM stands for read only memory. It is a computer memory that can permanently store data and applications within it. That is, it is non-volatile.

Answer 126

(d)Explanation: (d) Contents of main memory (or random access memory) gets lost when the computer is turned off. That is, it is volatile.

Answer 127

(d)Explanation: (d) Flash memory cards, floppy disk and hard disk drives are non-volatile computer storage device that can be electrically erased and reprogrammed, Whereas CD-ROM (stands for compact disc-read only memory) is a pre-pressed compact disc. Data once written on it, then it becomes read only. It can't be reprogrammed.

Answer 128

(b)Explanation: (b) A computer icon is a small pictures that represents an object or program. When you click icon, the associated object or program will be opened. Icons help in quickly identifying a type of object or program associated with the icon. Turn Any Loss Into A Gain, And Any Failure Into A success Development A Prelude To Prevail ELEMENTS OF A GOOD PERSONALITY

Answer 129

(e)Explanation: (e) Input allows user to enter or feed data into a computer through input devices such as keyboard, mouse, scanner, etc.

Answer 130

(a)Explanation: (a) A scanner is an input device that reads or scans an image and converts it into a digital format. It captures images from photographic prints, posters, magazine pages, print out of documents, etc. for computer editing and display.

Answer 131

(c)Explanation: (c) Non-volatile memory is a computer memory that can retain stored information even when the power is not 'on'. It permanently stores information. eg. Read only memory, storage devices such as hard disk drive, floppy, etc.

Answer 132

(d)Explanation: (d) Processing of data (raw facts or figures) into meaningful information is done by the CPU. Processing is done under the control of set of instructions called programs CPU contains the circuitry necessary to interpret & execute program instructions.

Answer 133

(b)Explanation: (b) Recycle bin is a waste basket that works as a location or Directory for deleted files or folders. All the files, folders, programs that you discard gets stored in it and you must empty it to permanently delete files & folders from your computer.

Answer 134

(d)Explanation: (d) An operating system is a system software that enables the computer hardware to communicate and operate with the computer software.

Answer 135

(b)Explanation: (b) A utility program allows a user to perform maintenance-type tasks usually related to managing a computer, its devices or its programs. This makes computer easier to use, eg. Disk fragmenter, file compression, etc.

Answer 136

(b)Explanation: (b) Subject in an email is a description of the topic of the message. The subject line must be informative and tempt the reader into wanting to know more about the content.

Answer 137

(c)Explanation: (c) Password is a set of secret characters or words utilized to gain access to a computer, web page, network resource or files. Password help ensure that computers or files can be accessed only by those who have been granted the right to view or access them. In this way, passwords provide confidentiality of computers or files from authorized access.

Answer 138

(d)Explanation: (d) An integrated circuit (IC), also called a chip or micro chip, is a semiconductor wafer on which thousands or millions of any resistors, capacitors and transistors are fabricated.

Answer 139

(c)Explanation: (c) All elements like text and images can be displayed in color in MS-Word. The user can choose color of his/her own choice.

Answer 140

(d)Explanation: (d) A computer network is a group of computers and other hardware devices that are linked together through communication channels to facilitate communication and resource-sharing among a wide range of users.

Answer 141

(d)Explanation: (d) A template is a tool for enforcing a standard layout and look and feel across multiple pages or within content regions. When you change a template any pages or regions that are based on that template are automatical ly changed as well . It is something which is pre-formatted.

Answer 142

(c)Explanation: (c) Fonts are designed for a set of characters. It is a graphical representation of text that may include a different typeface, point size, weight or design. eg, Times Roman is a typeface that defines the shape of each character, within Times Roman, there are many fonts to choose fromdifferent sizes, italic, bold, etc.

Answer 143

(e)Explanation: (e) A cursor refers to a movable indicator on a computer screen identifying the point that will be affected by input from the user.

Answer 144

(a)Explanation: (a) In computers, a joystick is a cursor control device used in computer games and assistive technology. It allows an individual to move an object in a game such as navigating a plane in a flight simulator.

Answer 145

(c)Explanation: (c) A repeater is an electronic device that receives a signal and retransmits it at a higher level or higher power or onto the other side of an obstruction, so that the signal can cover longer distances. Because repeaters work with the actual physical signal and do not attempt to interpret the data being transmitted, they operate on the physical layer, the first layer of the OSI model.

Answer 146

(e)Explanation: (e) Email spam, also known as junk email or unsolicited buck email is flooding the internet with many copies of the same message, in an attempt to force the message on people who would not otherwise choose to receive it.

Answer 147

(b)Explanation: (b) Right-clicking an item usually displays a list of things you can do with the item. For eg. when you right-click the recycle bin on your desktop, windows displays a menu allowing you to open it, empty it, delete it or see its properties.

Answer 148

(c)Explanation: (c) A hard copy is a printed copy of information from a computer. It is called so because it exists as a physical object.

Answer 149

(c)Explanation: (c) Tables, the basic building blocks of a database, are made up of records (or rows) and fields (or columns). For eg. a contacts table would contain several records and each record would contain several fields that store information such as the last name, first name, telephone number, etc.

Answer 150

(d)Explanation: (d) Any information that has been processed by the processor (CPU) and comes from a computer is considered an output. When someone is viewing output, they are seeing it on an output device such as a computer monitor or a hard copy print out.

Answer 151

(b)Explanation: (b) In computer, use-friendly refers to something which is easy to learn, understand and deal with eg. menu-driven programs are considered more user-friendly than command driven systems. Graphical user interfaces are also considered user friendly. They all make it easier for novices to use a computer.

Answer 152

(c)Explanation: (c) The Num Lock (or numeric lock or number lock) key enables and disables the numeric pad on the keyboard. Turning the Num lock 'on' will allow the user to use the numbers on the keypad and turning it 'off ' will enable the keys other than functions such as using the keypad as an arrow pad.

Answer 153

(a)Explanation: (a) Firmware boots up computerized or digital devices, as ROM chips are non-volatile, meaning they do not require a power source to hold their contents. This differentiates firmware from random access memory (RAM), for example, which loses stored data at shutdown. Perhapes the most familiar firmware is the basic input output system (BIOS) chip. The BIOS chip on a computer motherboard holds instructions that, upon powering up, initialize the hardware, ensure components are working, and finally roll out the operating system to take over.

Answer 154

(d)Explanation: (d) Switches are the devices inside the computer that can be flipped between the two states1 or 0, on or off. Types of electronic switches are vacuum tubes, Transistors (semiconductors) and integrated circuits. The control unit manages the switches inside the CPU. It moves each switch to its correct setting (on or off) and then performs the work of that processing stage.

Answer 155

(c)Explanation: (c) Memory chips can be high grade, low-grade, remanufactured or used. Poor-quality memory chips can cause frequent General Protection fault (GPF) errors in windows application errors and errors that hang the system.

Answer 156

(d)Explanation: (d) Error 601 shows this message could not continue scan with NOLOCK due to data movement.

Answer 157

(b)Explanation: (b) Your computer's Bios will run a memory test everytime the computer boots up. The bootup memory test primarily checks memory on the hard drive, checks virtual memory, verifies contiguous memory and displays ROM memory.

Answer 158

(d)Explanation: (d) The default font was changed from 10 point Times New Roman in word 97 and earlier versions to 12-point Time New Roman in Word 2000 and later. According to Microsoft, this change was implemented because many web browsers use 12 pt as their defualt font size. The decision had nothing to do with what may be most appropriate for printed documents.

Answer 159

(a)Explanation: (a) A SIMM, or single in-line memory module, is a type of memory module The first variant of SIMMs has 30 pins and provides 9 bits of data The second variant of SIMMs has 72 pins and provides 32 bits of data Non-IBM PC computers such as UNIX workstations may use proprietary non-standard SIMMs. The Macintosh IIfx uses proprietary non-standard SIMMs with 64 pins.

Answer 160

(d)Explanation: (d) Random-access memory (RAM) is a form of computer data storage. It takes the form of integrated circuits that allow stored data to be accessed in any order in a constant time, regardless of its physical location and whether it is related to the previous piece of data. RAM is often associated with volatile (short term data storage) type of memory.

Answer 161

(d)Explanation: (d) WRAM is window random access memory. It is a high performance video ram which operates at a 25% increase in bandwidth. It improves performance and is designed for use with graphic cards. WRAM is similar to VRAM but achieves even faster performance at less cost because it supports addressing of large blocks (windows) of video memory.

Answer 162

(a)Explanation: (a) Memory above and beyond the standard IMB (1024k) of main memory that DOS supports. Extended memory is only available in PCs with an Intel 80286 or later microprocessor.

Answer 163

(d)Explanation: (d) CPU (Central Processing Unit) is the brain of the computer that contains the circuitry necessary to interpret & execute program instructions. It comprises of arithmetic logic unit (to perform arithmetic calculations like addition, multiplications and logical comparisons like NOT, EQUAL TO, etc) and control unit (which coordinates the components of a computer system).

Answer 164

(c)Explanation: (c) Range check control checks that the data lie within a speci- fied range of values. For eg. the month of a person's date of birth should lie between 1 and 12. Similarly, number of days for the month of August lie between 1 and 31.

Answer 165

(c)Explanation: (c) To be valuable, information must be accurate, organized, timely, accessible, useful and cost effective to produce Generating information from a computer requires the following five elements - Hardware, Software, Data, People (or users) and procedures. Together these five elements comprise an information system.

Answer 166

(c)Explanation: (c) The Data Flow diagram (DFD) is an excellent communication tool for analysts to model processes and functional requirements. The sponser of a project and the end user will need to be briefed and consulted throughout all stages a system's evalution with a DFD, users are able to visualize how the system will operate what the system will accomplish and how the system will be implemented.

Answer 167

(a)Explanation: (a) The size of the bus, called the bus width, determines the number of bits that the computer can transmit at one time. for eg. a 32- bit bus can transmit 32 bits (4 bytes) at a time on at 64-bit bus, bits transmit from one location to another 64 bits (8 bytes) at a time. The larger the number of bits handled by the bus, the faster the computer transfers data.

Answer 168

(a)Explanation: (a) Installing anti-virus software is preventive measure. It prevents viruses from spreading to and from your computer. It searches for latent viruses on your computer, including viruses that may have spread to your system without your knowledge and fixes them. It protects your system from.

Answer 169

(c)Explanation: (c) Transactions done via internet are called online transactions. eg. online shopping, online banking, etc.

Answer 170

(c)Explanation: (c) A computer is an electronic device that takes raw data as an input, from the user and processes these data under the control of a set of instructions (called programs) and gives results (output) and saves output for future use.

Answer 171

(a)Explanation: (a) Steganography is the art of covered or hidden writing. The purpose of steganography is covert communication to hide a message from a third party. This differs from crypotography, the art of secret writing, which is intended to make a message unreadable by a third party but doesn't hide the existence of the secret communication. Steganography hides the covert message but not the fact that two parties are communicating with each other.

Answer 172

(c)Explanation: (c) Library management software performs functions like library access control, software and document version maintenance, change recording and document reconstruction. Q201. Sending an e-mail is same as(a) drawing a picture(b) writing a letter(c) talking on phone(d) sending a package(e) None of these (b)Explanation: (b) E-mail is the sending of message electronically on computer using internet. It is similar to writing a traditional letter on paper. Email consists of 3 vital components-envelope, header and body of the message. The envelope is something that an email user will never see since it is part of the internal process by which an email is routed Traditional postal offices facilitate letter transfer. Similarly, mail transfer agents (MTA) facilitate email transfers. Header consists of information like To, from, Date, subject. Body of email comprises of the actual message to be sent.

Answer 173

(b)Explanation: (b) The basic components that make up a computer system are monitor, CPU, keyboard, Mouse, software and network (eg. modem). Monitor, CPU, keyboard, mouse and networked communication devices are all hardware components. Hardware is useless without software to run on it. Software is any program that you load onto a computer-the operating system, games or applications , etc.

Answer 174

"(b)Explanation: 3.(b) Ctrl + A is the keyboard shortcut for ""select all"" i.e, selecting the whole document."

Answer 175

"(b)Explanation: 2.(b) Main memory or Random Access memory is the ""working memory"" in a computer. It is where data is stored that is being accessed by the CPU. Data is stored in RAM on temporary basis to complete tasks."

Answer 176

(a)Explanation: 1.(a) A cursor refers to a movable indicator on a computer screen identifying the point that will be affected by input from the user.

Answer 177

(a)Explanation: (a) The permanent memory of computer is ROM (Read only memory). Unlike main memory (RAM), once data has been written onto a ROM chip, it can not be removed and can only be read. In ROM, data has been pre recorded. It contains critical programs such as the program that boots the computers.

Answer 178

(c)Explanation: (c) Modem is a communication device that helps one computer to communicate with another computer. Modem modifies telephone communications into a form that can be processed by a computer. Modems also modifies computer output into a form that can be transmitted across standard telephone lines.

Answer 179

(b)Explanation: (b) Main memory (or RAM) is closely related to processor (or CPU). It is the working memory of the computer which stores data and instructions temporarily to be accessed by CPU till the processing gets completed. Data stored in RAM provides quick retrieval to CPU.

Answer 180

(a)Explanation: (a) Storage unit (or devices) holds data, instructions and information for future use. eg. hard disks, optical disks, memory cards, etc.

Answer 181

(c)Explanation: (c) For selecting or highlight text or any another object like icon, either a mouse or keyboard can be used. Generally a mouse is used because of its convenience. To highlight using mouse, position your cursor at the beginning of the text you want to highlight. Press and hold primary mouse button (left button); while holding the button, move the cursor to the end of the text and let go of the button.

Answer 182

(c)Explanation: (c) A compact disk (CD) is a plastic fabricated, circular medium for recording, storing and playing back audio, video and computer data. Initially, CDs were read only but new technology allows users to record as well. Some variations of the CD include-CDROM, CD-RW, CD-W, etc.

Answer 183

"(a)Explanation: (a) The start button in Microsoft windows launches the start menu, which is the main access point to both the user programs that are installed on the system and the system resources which control the behaviour of OS. One option on start menu is ""Help and Support"" which is the first place to go if you are looking for information on how to do something in the OS."

Answer 184

(d)Explanation: (d) MICR (Magnetic ink character recognition) is a character recognition. technology used mainly by the banking industry to ease the processing and clearance of cheques and other documents.

Answer 185

(c)Explanation: (c) A scanner is an input device that scans or reads images, printed text, handwriting and converts it to a digital image. It captures images from photographic prints, posters, magazine pages, and similar sources for computer editing and display.

Answer 186

(d)Explanation: (d) A computer icon refers to a small picture on a computer screen that represents a specific file, directory, window, option, program or application. Clicking on an item will start the associated application, program or open the associated file, directory or window.

Answer 187

(c)Explanation: (c) The Nyquist Theorem, also known as the sampling theorem, is a principle that engineers follow in the digitization of analog signals. Any analog signal consists of components at various frequencies. The highest frequency component is an analog signal determines the bandwidth of that signal. The higher the frequency, the greater the bandwidth, if all other factors are held constant. Suppose the highest frequency component, in hertz, for a given analog signal is fmax. So, according to Nyquist theorem, the sampling rate must be at least 2 fmax, or twice the highest analog frequency component. If the sampling rate is less than 2 fmax, some of the highest frequency components in the analog input signal will not be correctly represented in the digitized output.

Answer 188

(c)Explanation: (c) HTTP (hyper text transfer protocol) refers to the underlying protocol used by the world wide webs. It defines how messages are formatted and transmitted, and what actions web serves and browsers should take in response to various commands.

Answer 189

"(a)Explanation: (a) . Com is the most common of all domain suffixes. It is a toplevel domain (TLD). It stands for ""commercial"", It was originally created to represent a website that has a ""commercial"" content."

Answer 190

(b)Explanation: (b) No shade attribute of HR (Horizontal Rule) tag in HTML specifies whether the horizontal rule (or line) should be displayed as flat (one solid color) instead of three dimensional (shaded color).

Answer 191

(a)Explanation: (a) The control store contains the set of micro-instructions that are used to execute all of the programs run on that computer. The control store is referenced by the MPC, the micro-program counter, a device similar to a register. The MPC stores the location of the micro instruction that is currently being executed.

Answer 192

(c)Explanation: (c) Java Script is most commonly used as a client side scripting language. This means that Java Script code is written into an HTML page. When a user requests an HTML page with Javascript in it, the script is sent to the browser and it's up to the browser to do something with it.

Answer 193

(d)Explanation: (d) A firewall is a system designed to prevent unauthorized access to or from a private network. In protecting private information, a firewall is considered a first line of defense, it can't however, be considered the only such line. Firewalls are generally designed to protect network traffic and connections and therefore do not attempt to authenticate individual users when determining who can access a particular computer or network. While designing firewall security policy, it is important to ensure it is physically secured. That is various components such as routers, firewall servers must be restricted to individuals who are authorized to access. Firewall consoles and management tools must be locked and secured in a network cabinet with control mechanisms over physical access such as biometrics, key and lock or access cards, etc.

Answer 194

(d)Explanation: (d) A computer's main or primary memory is called as RAM (random access memory). It is the working memory which is used to store data and programs on a temporary basis. The RAM is compared to short-term or volatile memory, as it stores data that is actively used while the system is on.

Answer 195

(b)Explanation: (b) Hypertext Transfer Protocol, the underlying protocol used by the World Wide Web. HTTP defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands. For example, when you enter a URL in your browser, this actually sends an HTTP command to the Web server directing it to fetch and transmit the requested Web page. FTP, TCP/IP is the protocols which uses for remote host.

Answer 196

(a)Explanation: (a) Dynamic memory allocation is the allocation of memory storage for use in a computer program during the runtime of that program. It can be seen also as a way of distributing ownership of limited memory resources among many pieces of data and code.

Answer 197

(b)Explanation: (b) Debugging is the process of locating and fixing errors (called bugs) in a computer program that can cause it to crash, behave erratically or be susceptible to hacker attack.

Answer 198

(b)Explanation: (b) Batch processing is a form of data processing in which a number of input jobs are grouped for processing during the same machine run . No user interaction is required once batch processing is underway. for eg. monthly bills for utilities, generating monthly or bi- weakly payrolls are typically generated by batch processing.

Answer 199

(c)Explanation: (c) A thesaurus is a book of synonyms. It shows words of the same or similar meaning as the word selected.

Answer 200

(a)Explanation: (a) An embedded system is a computer system with a dedicated function within a larger mechanical or electrical system, often with a real-time computing mechanism. They are selfcontained computer devices that their own programming and typically do not receive input from user nor do they interact with other systems. They can range from portable devices such as digital watches, MP3 players, cars, electronic thermostat, etc, to large stationary installations like traffic lights, factory controllers or the system controlling nuclear power plants.

Answer 201

(c)Explanation: (c) Software can be divided into 2 types- application software and system software. System software is further divided into 3 types: • System control programs: controls the execution of programs, manage the storage and processing resources of the computer and perform other management & monitoring function. The most important of these programs is the operating system. Other examples are DBMS and communication monitors. • System support programs : provide routine service functions to other computer programs & computer users eg. utilities, libraries, etc. • System development programs: assist in the creation of application programs, eg. language translators such as BASIC interpreter & application generator.

Answer 202

(d)Explanation: (d) Transmission control Protocol/ Internet Protocol (TCP/IP) is the most popular network Protocol, and the basis for the Internet. Its routing capabilities provide maximum flexibility in an enterprisewide network. In windows XP, TCP/IP is automatically installed. On a TCP/IP network, you must provide IP addresses to clients. Clients may also require a naming service or a method for name resolution.

Answer 203

"(a) Explanation: (a) RAID, an acronym for Redundant Array of Independent Disks is a technology that provides increased storage functions and reliability through redundancy. This is achieved by combining multiple disk drive components into a logical unit, where data is distributed across the drives in one of several ways called ""RAID levels""."

Answer 204

(d)Explanation: (d) Java Script is a simple, lightweight, interpreted, cross platform programming language with object oriented capabilities that can be written directly into HTML documents to facilitate a more interactive user interface to a static HTML page. It runs in web browsers like Netscape communicator and Microsoft IE and is the defacto scripting language for HTML pages.

Answer 205

(a)Explanation: (a) 5

Answer 206

(a)Explanation: (a) Pass is the standard Unix password manage. All passwords live in ~/. password-store and pass provides commands for adding, editing, generating and retrieving passwords. -cn pass is the command for changing passwords in UNIX.

Answer 207

(c)Explanation: (c) WAVE or WAV (waveform audio file format) is a Microsoft and IBM audio file format standared for storing an audio bitstream on PCs.

Answer 208

(d)Explanation: (d) Fill effects allows you to create color gradients, selected textured or patterned backgrounded or set a picture for your slide background.

Answer 209

"(d) Explanation: (d) In Excel, you can print either the entire worksheet or a specific portion of the worksheet. Specific portion can be printed by setting print areas and print titles on a worksheet using the ""print Area"" menu item on the file menu. You can select the range of cells that you want to set as your print area."

Answer 210

(c)Explanation: (c) When creating formulas in Microsoft Excel, you always start by typing the equal sign. =). You type it in the cell where you want the answer to appear.

Answer 211

(a)Explanation: (a) HTML (Hyper text markup language) is the main mark up language for creating web pages and other information that can be displayed in a web browser.

Answer 212

(d)Explanation: (d) A system unit is the part of a computer that houses the primary devices that perform operations and produce results for complex calculations. It includes motherboard, CPU, RAM and other components, as well as the case in which these devices are housed. It is also called chassis or tower.

Answer 213

(c)Explanation: (c) A mailbox refers to an area in memory or on a storage device where e-mail is placed. In e-mail system, each user has a private mailbox, when the user receives e-mail, the mail system automatically puts it in the mail box.

Answer 214

(a)Explanation: (a) A home page/index page/ main page is the initial page a person sees when he or she opens a website on the internet. It serves as a table of contents for the site.

Answer 215

(d)Explanation: (d) C, BASIC, COBOL and Java are all examples of high level languages. They all use Englishlike statements and symbols to create sequences of computer instructions. Q245. Information on a computer is stored as what?(a) digital data(b) analog data(c) modem data(d) watts data(e) None of these (a)Explanation: (a) A computer represents data using the binary numeral system. Text, numbers, pictures, audio and any other form of information can be converted into a string of bits (or binary digits), each of which has a value of 1 or 0.

Answer 216

(a)Explanation: (a) Internal hard drives are located inside the system unit and are not designed to be removed unless they need to be repaired or replaced. Wheras external hard drives connected to a computer via a USB or Fire wire port and are frequently used for additional storage (such as for digital photos, videos and other large multimedia files) to move files between computers, and for backup purposes.

Answer 217

(a)Explanation: (a) The CPU, using a circuit called memory controller, loads the program data from the RAM memory. The data, now inside the CPU, is processed. The Arithmatic logic unit of CPU performs calculations on the data.

Answer 218

(a)Explanation: (a) A user account is a collection of information that tells windows what files and folders you can access, what changes you can make to the computer and your personal preferences, Such as your desktop background or color theme. User accounts make it so that you can share a computer with several people, but still have your own files and settings. Each person accesses their user account with a user name and password.

Answer 219

(d)Explanation: (d) The modem is a hardware device that enables a computer to send or receive information over telephone lines by converting the digital data used by computer into an analog signal used on phone lines and then converting it back once received on the other end.

Answer 220

(c)Explanation: (c) An embedded system is a computer system designed to perform one or few dedicated functions often with real-time computing constraints. It is embedded as a part of a complete device often including hardware and mechanical parts. Embedded systems range from portable devices such a digital watches and MP 3 players, to large stationary installations like traffic lights, factory controllers or the systems controlling nuclear power plants.

Answer 221

(c)Explanation: (c) A source code refers to the code written by a programmer in a high-level language and readable by people but not computers. Source code must be converted to object code or machine language before a computer can read or execute the program.

Answer 222

(b)Explanation: (b) Recycle bin is a waste basket icon on your computer desktop that works as a location or Directory for deleted files or folders.

Answer 223

(a)Explanation: (a) Data refers to raw, unevaluated facts, figures, symbols, objects, events, etc. Data may be a collection of facts lying in storage like a telephone directory or census records. Information is data that have been put into a meaningful and useful context and communicated to recipients who use it to make decisions.

Answer 224

(a)Explanation: (a) The taskbar is a movable, concealable icon bar that is located at the bottom of the graphical user interface (GUI) desktop and serves as a launching pad for applications as well as holder of icons indicating running programs.

Answer 225

(b)Explanation: (b) A computer network refers to two or more computers connected together through a communication media. The computers are connected in a network to exchange information and data. The computers connected in a network can also use resources of other computers

Answer 226

(a)Explanation: (a) A computer's RAM (random access memory) is the memory used to store data and programs on a temporary basis. The RAM is compared to short-term or volatile memory, as it stores applications and information that is actively used while the system is on.

Answer 227

(b)Explanation: (b) A Kilobyte (KB) is a measure of computer memory or storage which is approximately a thousand bytes. (actually, 2 to the 10th power or decimal 1024 bytes).

Answer 228

(d)Explanation: (d) A computer is an electronic device that performs 4 basic operations-input,process, output and storage. Input (eg. keyboard, mouse) Output (eg. printer, screen) and processing devices (eg. CPU, RAM,etc) together represent a computer system.

Answer 229

(a)Explanation: (a) A file in a computer is a collection of information stored electronically and treated as a unit by a computer. Every file must have its own distinctive name.

Answer 230

(d)Explanation: (d) The Recycle bin is where files, folders and programs that you discarded are stored. You must empty the recycle bin to permanently delete them from your computer.

Answer 231

(e)Explanation: (e) To remove a paragraph from a word document, simply highlight the paragraph (using a mouse or keyboard) you want to remove and then press DELETE key.

Answer 232

(b)Explanation: (b) A computer-literate refers to a person who has enough skill and knowledge to be able to use a computer. That is, he is able to use computer on a basic level.

Answer 233

(c)Explanation: (c) A cursor refers to a movable indicator on a computer screen identifying the point that will be affected by input from the user.

Answer 234

(c)Explanation: (c) The components of a computer can be classified into two broad categories-Hardware (physical parts of a computer that can be seen or touched) and software (programs required to operate the computer).

Answer 235

(d)Explanation: (d) In a full or complete backup, every file of data is copied from one computer to another form of media, including the operating system, all applications and software, all user created files, and all your settings.

Answer 236

(b)Explanation: (b) In any spreadsheet program such as Excel, each rectangular box in a row worksheet is refered to as a cell. A cell is the intersection point of a column and a row.

Answer 237

(e)Explanation: (e) You can indent the first line in the first paragraph of an essay, report, book chapter or any other type of writing using a tab key. This sets the paragraph apart visually, and signals that it is the first of a series of paragraphs. If you want to indent the entire paragraph, use the increase indent tool on the tool bar.

Answer 238

(b)Explanation: (b) Text is usually left aligned whereas numbers in table columns is usually right aligned. This helps with calculations, because then all the numbers are lined up and it is easier to see the value.

Answer 239

(a)Explanation: (a) The cursor can be moved in a document's work area, without erasing or entering text, by using the cursor control keys. Because these keys are marked with arrows (up, down, left and right), they are also called arrow keys. These keys can only be used to move the cursor where the text has already been entered. To move the cursor down one line, press the key marked with a down arrow. To move the cursor up, left or right press the key marked with the appropriate arrow.

Answer 240

(e)Explanation: (e) Computer monitor is an output device that displays the result of processing (Output) to the user.

Answer 241

(c)Explanation: (c) Data refers to information in raw or unorganised form (Such as alphabets, numbers or symbols) that represents conditions, ideas or objects.

Answer 242

(d)Explanation: (d) DOC is the document file format used by Microsoft word, also used with most word processing software including open office.

Answer 243

(b)Explanation: (b) Numeric data refers to any data that can be quantified eg. age, cost, test score, bank account no. etc, whereas non-numeric data refers to any data that can't be quantified eg. name, address, etc. It makes use of the letters of the alphabets only.

Answer 244

(e)Explanation: (e) When you save a document (or file) for the first time, you will need to mention a name for that document. To do that go to file> Save As. A file name is used to unequally identify a computer file stored in a file system. Q275. A small picture that represents something on your screen ... such as a(n) ______(a) application(b) table(c) photo(d) modem(e) icon (e)Explanation: (e) A computer icon refers to a small picture on a computer screen that represents a specific file, directory, window, option or program. Clicking on an icon will start the associated program, or open the associated file, directory or window.

Answer 245

(d)Explanation: (d) A menu (or file menu) is a list of commands or choices offered to the user. It allows a user to access various options the software program is capable of performing. Clicking an option in the menu executes the indicated function or generates another m e n u . I Indispensable for all examinees of SSC, Railways, Air Force, Navy, CRPF, Delhi Police, UP Police, MP Police, Rajasthan Police, Bihar Police, Jharkhand Police, Primary and Middle Schools Teachers in Bihar, Jharkhand, Uttar Pradesh and West Bengal and others. I Precise and compact collection of facts related to Indian History, World History, Geography, Indian Constitution and Polity, General Science and Computer, Information Technology, Environment, Agriculture and Animal Husbandary and above all Traditional General Knowledge with one Liner approach. I Each and every line of the book is pact with important information. Price : 239/-

Answer 246

"(b)Explanation: (b) To print a document, click ""Print"" from the file menu. This will bring up the printing menu. Change the necessary details. Once your settings are to your satisfaction, just click ""OK""."

Answer 247

(a)Explanation: (a) An e-mail is a system of worldwide electronic communication in which a computer user can compose a message at one terminal that can be regenerated at the recipient's terminal when the recipient logs in. It is a method of exchanging digital messages from on author to one or more recipients

Answer 248

(e)Explanation: (e) Use the save command to save changes to the current file (the file remains in the current format) or the save As command to save changes with a different name, location or format.

Answer 249

(e)Explanation: (e) Computer software (or programe) refers to a set of machine-readable instructions that directs a computer's processor to perform specific operations.

Answer 250

(b)Explanation: (b) User interface refers to the visual part of computer application or operating system through which a user interacts with a computer or a software. It determines how commands are given to the computer or the program and low information is displayed on the screen. Three main types of user interfaces are- Command language, menus and Graphical user interface.

Answer 251

(c)Explanation: (c) Title bar is located along the top of window or a dialog box that displays the name of the window or software program being used. On the right hand side of title bar, maximize (open window), minimize and close button appears.

Answer 252

(c)Explanation: (c) A scanner is an input device that reads or scans an image and converts it into a digital format. It captures images from photographic prints, posters, magazine pages, print out of documents, etc. for computer editing and display.

Answer 253

(b)Explanation: (b) Any information that has been processed and comes from a computer or computer device is considered output. When some one is viewing output, they're seeing it on a output device such as monitor or a hard copy print out or sound from speakers.

Answer 254

(a)Explanation: (a) A cursor refers to a movable indicator on a computer screen identifying the point that will be affected by input from the user.

Answer 255

(a)Explanation: (a) My Documents folder is a component of the user profile that is used as a unified location for storing personal data. By default, My Documents folder is a folder in the user's profile that is used as a default storage location for saved documents.

Answer 256

"(a)Explanation: (a) The start button in Microsoft windows launches the start Menu, which is the main access point to both the user programs that are installed on the system and the system resources which control the behaviour of OS. One option on start menu is ""Help and Support"" which is the first place to go if you are looking for information on how to do something in the OS."

Answer 257

"(c)Explanation: (c) ROM (Read Only Memory) is a ""built-in"" memory and that is capable of holding data and having that data read from the chip, but not written to. Data is prepressed or ROM chip by manufacturer. Unlike RAM, ROM retains its contents even when the computer is turned off. ROM is referred to as being non-volatile whereas RAM is volatile."

Answer 258

(b)Explanation: (b) CPU (Central Processing Unit) is referred to as brain of computer as most of the processing of computer system is performed by it. It executes instructions and provides the resultant output. It is responsible for all computational, arithmetic logical and data processing tasks performed by the computer.

Answer 259

"(d)Explanation: (d) Ctrl + ""B"" is the keyboard shortcut for making the entire text bold in a document."

Answer 260

(b)Explanation: (b) An Excel workbook is a file used by a Microsoft Excel spreadsheet application. Excel workbooks are actually sets of spreadsheet pages (or worksheets), each of which can include separate or co-dependent data.

Answer 261

(c)Explanation: (c) Editing a document involving opening the existing document in the appropriate editor application, then saving the changes and checking the document back in. Document you edit are automatically check out. eg. in MS- Word, depending on a document, its final format and its purpose, the editing can involve checking grammar and spelling, content, word choice and formatting.

Answer 262

(d)Explanation: (d) A clipboard is a special file or memory area (buffer) where data is stored temporarily before being copied to another location. Many word processor, for example, use a clipboard for cutting and pasting. When you cut a block of text, the word processor copies the block of the text to the clipboard ; when you paste the block, the word processor copies it from the clipboard to its final destination.

Answer 263

(b)Explanation: (b) A home page/index page/main page is the initial page a person sees when he or she opens a website on the internet. It serves as a table of contents for the website.

Answer 264

(d)Explanation: (d) A network server is a computer designed to process requests and deliver data to other (clients) computers over a local network or the Internet. Server is the most powerful computer in the network. It manages network resources on the network. They are configured with additional processing, memory and storage capacity to handle the load of serving clients, eg. Web servers, Proxy servers, FTP servers, Online game servers.

Answer 265

(d)Explanation: (d) SWIFT stands for society for worldwide Internet financial Telecommunications. The objective of the company is for the collective benefit of the members of the company, the study, creation, utilisation and operation of the means necessary for the telecommunication. transmission and routing of private, confidential and proprietary financial messages.

Answer 266

(c)Explanation: (c) The cls command is an internal command in Microsoft operating systems. Running the cls command at the command promt would clear the screen of all previous text and only return the prompt.

Answer 267

(b)Explanation: (b) FORTRAN (Formula Translation) is a third- generation programming language that was designed for use by engineers, Mathematicians and other users and creators of scientific algorithms.

Answer 268

(c)Explanation: (c) A repeater is an electronic device that receives a signal and retransmits it at a higher level or higher power or onto the other side of an obstruction, so that the signal can cover longer distances. Because repeaters work with the actual physical signal and do not attempt to interpret the data being transmitted, they operate on the physical layer, the first layer of the OSI model.

Answer 269

(a)Explanation: (a) A computer monitor is an output device that displays the result of the processing to the user on display or screen of the computer. Q301. In MS-Word WYSIWYG stands for(a) what you see is what you get(b) preview(c) what you see is where you get(d) print(e) None of these (a)Explanation: (a) WYSIWYG is a short for what you see is what you get. A WYSIWYG application is one that enables you to see on the screen exactly what will appear when the document is printed. This differs, for example, from word processors that are incapable of displaying different fonts & graphics on the display screen even though the formatting codes have been inserted into the file. WYSIWYG is especially popular for desktop publishing

Answer 270

(c)Explanation: (c) In multiplexing, the signals that carried by the channel are analague and as such susceptible to picking up interference. This can't be removed from the signal. Each channel in the scheme needs a dedicated modem at each end of the channel to place the signal on a carrier and remove it at the far end.

Answer 271

(b)Explanation: (b) In a mesh topology, each device is connected to another device in a network. It is a way of interconnecting devices on a network, eg. if there are N devices, each device will have (n-1) connections to get to every other device in a network. It is most expensive topology structure as it requires extensive cabling.

Answer 272

(c)Explanation: (c) A CPU (Central Processing Unit) is a silicon integrated circuits sometimes called a computer chip. It carries out the instructions of a computer program by performing the basic arithmetical, logical and I/O operations of the system.

Answer 273

(d)Explanation: (d) Microsoft Scan-Disk is a diagnostic utility includes in MS-DOS and Windows ax. It checks & repairs file systems errors on a disk drive. Scan disk included a more user-friendly interface than chkdsk, more configuration options and the ability to detect and recover from physical errors on the disk.

Answer 274

(c)Explanation: (c) Java is a programming language expressely designed for use in the distributed environment of the internet. It can be used to create complete applications that may run on a single computer or be distributed among servers and clients in a network. It can be used to built applets which are used as a part of a web page. Applets make it possible for a web user to interact with the web page.

Answer 275

"(d)Explanation: (d) In HTML, the 'align' attribute is used to align images to the left or right side of a page, allowing text to wrap around the image. HTML uses the align attribute in the following way : or ."

Answer 276

(d)Explanation: (d) BIOS (Basic Input/Output system), is the built-in software that determines what a computer can do without accessing programs from a disk. The BIOS is typically placed in a ROM chip that comes with the computer. This ensures that the BIOS will always be available and will not be damaged by disk failures. It also makes it possible for a computer to boot itself.

Answer 277

(a)Explanation: (a) A SIMM (single-in-line memory module) is a module containing one or several random access memory (RAM) chips on a small circuit with pins that connect to the computer motherboard. SIMMS usually come in memory chip multiples of four megabytes.

Answer 278

(a)Explanation: (a) It is important to shut down system properly. There are many processes running in the background all the time. These processes are managing the system and keep of lot of files open. When the system's power is switched off directly, these files are not closed properly and may become corrupted which in turn can cause serious file system damage.

Answer 279

(a)Explanation: (a) The SUM function in excell takes all of the values in each of the specified cells and totals their values. The syntax is : = SUM (value1 : value 2 :.....). you can enter constant, cell, range of cells in the above SUM formula.

Answer 280

(d)Explanation: (d) In a full or complete backup, every file of data is copied from one computer to another form of media, including the operating system, all applications & software, all user created files and all your settings.

Answer 281

(c)Explanation: (c) Antivirus software like NORTON is a security utility program. It is asoftware that prevents, searches for, detect and remove software viruses and other malicious software like worms, trojans, adware etc. Installing anti-viruses software on your computer system protects your system from future infection.

Answer 282

(c)Explanation: (c) Multiplexing means combining multiple streams of information for transmission over a shared medium. In this, independent pair of senders & receiver devices share a transmission medium.

Answer 283

(b)Explanation: (b) A newsgroup is a forum on the internet for textual discussions of specific subjects. A newsgroup essentially is a discussion group that generally involves an article that serves as a stimulus for message postings that form conversational threads. A thread is an array of multiple posts on the same subject matter of the original post.

Answer 284

(b)Explanation: (b) You can enter data directly into the tables in a database. However, you can make the process of entering and working with data much easier and more accurate of you use forms. Three types of forms can be created: Data entry (or input) forms; Switch boards and custom dialog boxes. You use data entry forms to add data to your database or view, edit and delete existing data.

Answer 285

(c) Explanation: (c) A peripheral device is one which is connected to a host computer but is not a part of the core computer architecture. They are the hardware items for your computer like mouse, keyboard, printer, monitor, etc. They are connected with a computer through several I/O interfaces such as communications (com), universal serial bus (USB) and serial parts.

Answer 286

(b)Explanation: (b) BIOS shadowing is the process in which the contents of the ROM are being copied to the RAM allowing the computer to access that information quicker. Some computer BIOS set ups may allow the user to enable and disable this feature.

Answer 287

"(c)Explanation: (c) A series of error codes from 100 to 199 indicates problem with system board. System board error code 100 means ""cannot create another system sempahore"". This error code may also display as "" ERROR - TOO - MANY - SEMAPHORES"" or as the value 0x64."

Answer 288

(d)Explanation: (d) When you use Access to manage all of information in one file, then you can use objects within an access database file. These objects are : • tables to store data. • Queries to find and retreive just the data you want. • forms to view, add and update data in tables. • Reports to analyze or print data in a specific layout. • Macros can be thought of as a simplified programming language. Which you can use to add functionality to database. It contains actions that performs tasks such as opening a report, running a query, etc. • Module is a collecton of declarations, statements & procedures that are stored together as a unit. Modules can be written in visual basic for applications (VBA) programming language.

Answer 289

(b)Explanation: (b) A software bug is a error, flow, failure or fault in a computer program or system that produces an incorrect or unexpected result or causes it to behave in unintended ways.

Answer 290

(b)Explanation: (b) Traditionally, user connect to a main frame using a terminal which allowed them to input request to the mainframe. The mainframe would then handle all the computing before outputing a response. These terminals are called dumb terminals because they had no data-processing abilities of their own, they were simply windows through which users could access the mainframe. These days, terminal emulation software such as 3270 emulation is used in place of a terminal.

Answer 291

(a)Explanation: (a) Dial up Internet service is a service that allows connecting to the Internet through a standard telephone line. By connecting the telephone line to the modem in the computer and inserting the other end into the phone jack, and configuring the computer to dial a specific number provided by your I sp. You are able to access the internet on your computer. Dial up internet service is the cheapest internet service.

Answer 292

(c)Explanation: (c) A utility program allows a user to perform maintainence type tasks usually related to managing a computer, its devices or its programs. It makes computer easier to use. eg. windows utility called Disk Defragmenter locates & eliminates unnecessary file fragments and rearranges files and unused disk space to optimize computer operations.

Answer 293

(c)Explanation: (c) Right- clicking an item, usually displays a list of things you can do with the item, eg. when you right-click the recycle bin on your desktop, windows displays a menu allowing you to open it, empty it, delete it or see its properties.

Answer 294

(b)Explanation: (b) An arithmetic operation refers to a mathematical operation involving numbers. There are four primary arithmetic operations a computer program can perform. There are addition, subtraction, division, multiplication. They form the basis for determining the outcome of calculated numbers. All arithmetic operations are carried out in Arithmetic Logic unit (ALU) of a computer's processor. The logical comparisons like greater than, less than, equal to, etc, is performed by logic unit.

Answer 295

(e)Explanation: (e) A page (or print) preview is a special mode of modern programs that provide an accurate view of what a full printed page would look like. It enables the user to view all pages of his/ her document and make suitable changes, if any, before taking actual print out

Answer 296

(b)Explanation: (b) The Num lock (or numeric lock or number lock) key enables and disables the numeric pad on the keyboard. Turning the num lock 'on' will allow the user to use the numbers on the keypad and turning it 'off' will enable the keys other than functions such as using the keypad as an arrow pad.

Answer 297

(b)Explanation: (b) The components of a computer can be broadly classified into : hardware and software. Hardware refers to any physical component that can be seen or touched, eg. CPU, monitor, keyboard, etc. Software refers to the programs which are required to operate the computer. eg. system sofware, application software, etc.

Answer 298

(c)Explanation: (c) Every website has a unique address to identify it on World Wide Web. This address is called as Website address or uniform resource locator (URL). Like your home address, URL also contains different parts. Domain name in URL is the unique address that identifies the location of the website, eg. http:// WWW. examples .com. Here example .com is domain name; http:// is the protocol used to access this website and WWW is a subdomain.

Answer 299

"(a)Explanation: (a) A menu bar is a horizontal bar, typically located at the top of the browser or application window below the title bar, containing drop-down menus like File, Edit, Font, Tools, help that allow the user to interact with the content or application in various ways. In MS-Word, for eg. ""file"" menu provides options to open a file, create a new one, save it, print, etc. ""Edit"" menu allows the user to copy, paste, find and replace, etc."

Answer 300

(a)Explanation: (a) A hyperlink is a graphic or a piece of text in an Internet document that can connect user to another webpage or another portion of a document. A hyperlink shows up as a single word or group of words that will usually be marked as underlined, and are frequently blue in color,

Answer 301

(d)Explanation: (d) A computer network is a group of computers and other hardware devices that are linked together through communication channels to facilitate communication and resource sharing among a wide range of users.

Answer 302

(d)Explanation: (d) Data is raw, unorganized facts that needs to be processed. Data can be something simple or seemingly random and useless until it is organised. When data is processed, organised, structured or presented in a given context so as to make it useful, it is called information.

Answer 303

(a)Explanation: (a) Reusable optical storage will typically have the acronym RW (re-writtable) eg. CD-RW, DVDRW, etc. This means reusable storage medium can be re-written a dozen or many times, the contents can be copied, deleted and modified as necessary.

Answer 304

(c)Explanation: (c) A database is a collection of information that is organised so that it can be accessed, managed and updated. Database are organised in the form of tables. Database tables consist of columns & rows. Each column contains a different type of attribute and each row corresponds to a single record.

Answer 305

(a)Explanation: (a) In a graphical user interface, dragging refers to moving an icon or other image on a display screen. To drag an object across a display screen, you select the object with a mouse button (grap it) and then move the mouse while keeping the mouse button pressed down.

Answer 306

(b)Explanation: (b) The SUM function provides a quick way to sum columns and rows of numbers in an Excel worksheet. The syntax of SUM function is : = SUM (Number 1 : Number 2 : ......) Upto 255 numbers can be entered as arguments for the function.

Answer 307

(a)Explanation: (a) A control unit of the CPU contains circuitry that uses electrical signals to direct the entire computer system to carry out (execute) stored program instructions. Logic unit doesn't execute program instructions, rather it directs other parts of the system to do so. It performs the tasks of fetching decoding, managing execution and then storing results.

Answer 308

(d)Explanation: (d) An application software refers to programs designed to make users more productive and/or assist them with personal tasks. eg. word-processing software, spreadsheet software, database software, etc. Application programs use the services of the computer's operating system and other supporting programs.

Answer 309

(d)Explanation: (d) Print layout switches the active document to a page layout view, which is an editing view that displays your document as it will print. Rulers and guides can be used in the layout view to help you accurately measure and organize the elements on the page.

Answer 310

(c)Explanation: (c) To close the menu, without making an selection, press ESC (Escape) key on the keyboard.

Answer 311

"(a)Explanation: (a) If you want a transition to occur after a specified period of time, check the ""Automatically After"" check box and then specify the amount of time you want to elapse before the transition occur. Automatically check box is located in the Animation Tab in the ""Transition To This"" slide group."

Answer 312

(d)Explanation: (d) HTML (Hyper text markup language) is the main mark up language for creating web pages and other information that can be displayed in a web browser. HTML is written in the form of HTML elements consisting of tags enclosed in angle brackets (), with the web page content.

Answer 313

(c)Explanation: (c) A mail box refers to an area in memory or on a storage device where e-mail is placed. In email systems, each user has a private mailbox. When the user receives email, the mail system automatically puts it in the mailbox.

Answer 314

(b)Explanation: (b) Title bar, ribbon, status bar, views and document workplace are elements of windows program in word. They form the software environment which help the user to identify and organize the tools that the user uses most often. • The title bar appears at the top of the design window and the top of a minimized design workspace. • The menu bar ribbon stretches across the top of the computer window and contains a variety of drop-down menus. • The status bar appears at the bottom of design window. • The user can open/add a new document to the document work space. Using different views, users can view document in different ways eg. full screen view maximizes the active documents workspace to the size of the screen.

Answer 315

(d)Explanation: (d) Memory refers to an area within a computer system that holds data waiting to be processed by CPU. Examples of processing include performing calculations, sorting lists of words or numbers, modifying documents and pictures according to user instructions and drawing graphs.

Answer 316

(a)Explanation: (a) Ctrl + V is the keyboard short for paste function. Paste refers to copy an object from a buffer (or clipboard) to a file. In word processing, blocks of text are moved from one place to another by cutting and pasting. When you cut a block of text, the word processer removes the block from you file and places it in a temporary holding area (buffer). You can then paste the block of text in the buffer somewhere else (to another file or part of document).

Answer 317

(d)Explanation: (d) The early computer systems (first generation) were programmed using machine language that consisted of strings of binary digits. Such programs were considered expensive to develop as it took extremely long period to design, code and test.

Answer 318

(c)Explanation: (c) In graphical user interface, such as windows, a folder is an object on computer's hard drive to store files. These files can be documents, programs, scripts, libraries, etc. A folder can also store sub-folders, thereby, making the file system on computer hierarchial. Foldres allow people to organize their files in a way that makes sense to them.

Answer 319

(c)Explanation: (c) Input devices help in entering raw data like sound, image, words, commands, etc. into the computer for further processing. This raw data is translated into machine readable form by these input devices. eg. keyboard, mouse, scanner, microphone, etc.

Answer 320

(b)Explanation: (b) Anything written on the screen is referred to as Text which comprises of words, sentences, paragraphs. Objects that are not text include graphics, numbers (if they are not stored in ASCII characters) and program code. It is organised data (or information).

Answer 321

(a)Explanation: (a) A system unit is the part of a computer system that houses the primary devices that perform operations and produce results for complex calculations. It includes motherboard, CPU, RAM and other components, as well as the case in which these de- vices are housed. This unit is also known as chassis or tower.

Answer 322

(b)Explanation: (b) A personal computer is a micro computer designed for use by only one person at a time. It is based on a micro processor technology that enables manufacturers to put an entire CPU on one chip. Business use PC for word processing, accounting, desktop publishing, and for running spreadsheet and database management applications. At home, the most popular use for PC is for playing games.

Answer 323

(d)Explanation: (d) C, BASIC, COBOL and JAVA are all examples of high level languages. They all use English-like statements and symbols to create sequences of computer instructions.

Answer 324

(b)Explanation: (b) RD BMS is an acronyms for Relational Database Management System. RDBMS is based on relational model defined E.F. Codd Data is stored in the form of rows and columns.

Answer 325

(c)Explanation: (c) There are 6 different HTML headings. From to tags are used to define HTM headings. defines the most important heading, and defines the least important heading.

Answer 326

(a)Explanation: (a) A computer system comprises of hardware which refers to the physical parts of a computer that can be seen and touched. Hardware may include the system unit which forms the core architecture of computer and comprises of CPU, memory, motherboard, buses, etc. It may also include peripheral devices which are connected to the system unit. It includes input devices, output devices and storage devices.

Answer 327

(a)Explanation: (a) In signal processing, sampling is the reduction of an analog to digital signal. A common example is the conversion of a sound wave to a sequence of samples.

Answer 328

(a)Explanation: (a) A user group is collection of user accounts in windows that have the same security rights. In windows you use Group policy to define user & computer configurations for groups of users and computers. You can create a specific desktop configuration for a particular group of users and computers by using the Group policy Microsoft Management Console (MMC) snap-in

Answer 329

"(b)Explanation: (b) In typesetting, full justification is the typographic alignment setting of text or images within a column or ""measure"" to align along both left & right margin. When the text is fully justified, it is arranged so that each line begins or ends right under the other, creating an even, vertical edge to the block of text. It is mostly used in newspaper, magazines, book, etc to enhance readability of the text."

Answer 330

(d)Explanation: (d) A back up refers to the copy and archive of computer data to a different location so that it may be used to restore the original data after a data loss event. eg. equipement failure or catastrope.

Answer 331

(d)Explanation: (d) A computer software refers to the set of instructions that directs a computer's processor to perform specific operations.

Answer 332

(b)Explanation: (b) A compiler is a software program that translates a source program written in some high level language (such as C, C++, Java) into machine code for some computer architecture (such as Intel Pentium Architecture). The generated code can be later executed many times against different data each time.

Answer 333

(a)Explanation: (a) The primary purpose of software is to turn data (raw facts or figures) into meaningful information which can be used in decision making. eg. data such as number of hours an employee has worked during a month and pay rate when fed into payroll software gives salary of the employee for that month.

Answer 334

(b)Explanation: (b) A programming language is a formal language designed to communicate instructions to a machine, particularly a computer. It can be used to create programs that control the behavior of a machine and/or express algorithms precisely. The description of a programming language is usually split into the two components of syntex (form) and semantics (meaning).

Answer 335

(b)Explanation: (b) To highlight text using mouse, position cursor at the beginning of the text you want to highlight. Press and hold primary mouse button (left button) ; while holding the button, move the cursor to the end of the text and let go off the button. This will highlight all text from the beginning to the end.

Answer 336

(d)Explanation: (d) A spreadsheet is a grid that organizes data into columns and rows. Spreadsheets make it easy to display information and people can insert formulas to work with the data. It is used to record such things as incomes & expenses (preparing budget), items in inventory, debits & credits, etc.

Answer 337

(a)Explanation: (a) The 'Save' command automatically saves the file using the same name, format and location, as when it was last saved or opened from. However, using the 'Save as' command opens a dialog box in which the user can change of the name of the file, the format as well as the location of where the file is saved.

Answer 338

(d)Explanation: (d) You can apply a different color to the word document. On the page layout tab, in the page background group, click page color. You can either click the new color that you want under the Theme colors or standard colors. Also, you click more colors and then click a color of your choice.

Answer 339

(b)Explanation: (b) Data is raw, unorganised facts that needs to be processed. Data can be something simple or seemingly random and useless until it is organised. When data is processed, organised, structured or presented in a given context so as to make it useful. it is called information.

Answer 340

(d)Explanation: (d) Reusable optical storage will typically have the acronym RW (re-writtable). For eg. CD-RW, DVD-RW, etc. This means rewritten a dozen or many times, the contents can be copied, deleted and modified as necessary.

Answer 341

(b)Explanation: (b) A page preview is a special mode of modern programs that provide an accurate view of what a full printed page would look like. It enables the user to view all pages of his/her document before taking actual print out.

Answer 342

(c)Explanation: (c) A computer system comprises of hardware which refers to the physical parts of a computer that can be seen and touched. Hardware may include the system unit which forms the core architecture of computer and comprises of CPU, memory, motherboard, buses, etc. It may also include peripheral devices which are connected to the system unit. It includes input devices, output devices and storage devices.

Answer 343

(d)Explanation: (d) DOC is a document file format used by Microsoft word, also used with most word processing software, including open office. DOC stands for Document file. A DOC file can contain formatted text, images, tables, graphs, charts, page formatting and print settings.

Answer 344

(a)Explanation: (a) A peripheral device is one which is connect to a host computer but is not a part of the core computer architecture. They are the hardware items for your computer like CPU, VDU, Touch screen, etc. They are connected with a computer through several I/O interfaces. • An OS (Operating System) is a system software that directs a computer's operations, controlling and scheduling the execution of other programs and managing storage, I/O and communication resources.

Answer 345

(e)Explanation: (e) All of the above

Answer 346

(c)Explanation: (c) The most common and enduring form of removable-storage technology is magnetic storage. Removable magnetic storage uses a drive, which is a mechanical device that connects to the computer. You insert the media, which is the part that actually stores the information, into the drive, eg. floppy disk, hard disk, magnetic tape, etc.

Answer 347

(d)Explanation: (d) A filename extension is a suffix (seperated from the base filename by a dot or space) to the name of a computer file applied to indicate the encoding (file format) of its contents or usage. eg. .bar, .doc, .htm, etc.

Answer 348

(b)Explanation: (b) Computer is an advanced electronic device that takes raw data as input from the user and processes these data under the control of set of instructions (called programs) and gives the result (output) in the form of meaningful information that can be used in decision making. This output can be saved for future use.

Answer 349

(b)Explanation: (b) Traditionally, user connect to a mainframe using a terminal which allowed them to input request to the mainframe. The mainframe would then handle all the computing before outputing a response. These terminals are called dumb terminals because they had no data-processing abilities of their own, they were simply windows through which users could access the mainframe. These days, terminals emulation software such as 3270 emulation is used in place of a terminal.

Answer 350

(a)Explanation: (a) Hard drives are fastest among given options. Magnetic tapes are sequential access devices. Hard disks hold more data and are faster than floppy disks, their disks spin faster. Also, they locate data on the disks surface in much less time. Hard disk spin between 3600 rpm and 720 rpm compared to a floppy disk 300 rpm. Compared to hard disk drives, CD-ROM drives are quite slow, in part because the laser reads pits and lands one bit at a time. Also optical disk is split into sector. So rotational speed is slow.

Answer 351

(d)Explanation: (d) EDI (Electronic Data Interchange) is the process of using computers to exchange business documents between companies.

Answer 352

(c)Explanation: (c) Gateway is a component of internet which is often used as a connection to a mainframe or the internet. Gateways enable communications between different protocols, data types and environments. This is achieved via protocol conversion, whereby the gateway strips the protocol stack off of the packet and adds the appropriate stack for the other side.

Answer 353

(b)Explanation: (b) MS-DOS (Microsoft-Disk Operating System) is a single user, single-tasking computer operating system that uses a command line interface. In single user operating system, only one user can work at a time.

Answer 354

(c)Explanation: (c) The main feature of a data warehouse is that the data is oriented around major subject areas of businesss. The operational world is designed around applications and functions such as loans, savings, bank card, and trust for a financial institution. The data warehouse is designed around major subjects such as customer, vendor, product and quality. The alignment around subject areas affects the design and implementation of the data found in the data warehouse.

Answer 355

(b)Explanation: (b) Computer is not actually intelligent, it is artificially intelligence. Artificial intelligence of a computer is the ability to perform actions thought to require intelligence. Among these actions are logical deductions and inferrence, creativity, the ability to make decisions based on past experience or insufficient or conflicting information, and the ability to understand spoken language.

Answer 356

(b)Explanation: (b) The advantage of developing own software in-house is that it can customized. to the exact requirements of your own organi- zation. Also, it will be developed as per the Quality standards laid down by your organization.

Answer 357

(b)Explanation: (b) Computer instructions are a set of steps or documentation that includes information on how to operate, perform or otherwise maintain particular software or hardware. Instructions are also portion of programming that prompts a computer to execute a function.

Answer 358

(d)Explanation: (d) Fixed modem is a modem that can not be moved from its position. It is static.

Answer 359

(d)Explanation: (d) An intranet is a private network that is contained within an enterprise. It may consist of many interlinked local area networks and also use leased lines in the WAN. The main purpose of an intranet is to share company information and computing resources among employees.

Answer 360

(a)Explanation: (a) Data integrity refers to the accuracy and consistency of stored data, indicated by an absence of any alteration in data between two updates of a data record. It is imposed within a database as its design stage through the use of standard rules & procedures, and is maintained through the use of error checking and validation routines.

Answer 361

(a)Explanation: (a) An operating system manages the computer's memory, processes and all of its software and hardware. Most of the time, there are many different programs running at the same time, and they all need to access your computer's CPU, memory and storage. The operating system co-ordinates all of this to make sure that each program gets what it needs. It also allows you to communicate with the computer without knowing how to speak the computer's language.

Answer 362

(d)Explanation: (d) Access speed (or time) is the time taken to access a given byte of information stored on a hard disk. It is generally measured in milliseconds. It comprises of seek time, head switching time, search time and data transfer time.

Answer 363

(b)Explanation: (b) A system flow chart (or data flow chart) is used to describe the flow of data through a complete data processing system. Different graphic symbols represents the clerical operations involved and the different input, storage, and output equipment required. Although the flow chart may indicate the specific programs used, no details are given of how the programs process the data.

Answer 364

(d)Explanation: (d) A system unit is the part of a computer system that houses the primary devices that perform operations and produce results for complex calculations. It includes motherboard, CPU, RAM and other components, as well as the case in which these devices are housed. This unit is also known as chassis or tower.

Answer 365

(b)Explanation: (b) Computers lane four basic functions : they take in raw data i.e, unorganized facts & figures (input) ; they store data (storage) ; they manipulte data (processing) and they provide the user with meaningful informationn (output) for decision-making.

Answer 366

(b)Explanation: (b) Recycle bin is a waste basket Icon on windows desktop that works as a location or Directory for deleted files or folders. All deleted files & folders are temporarily stored here before finel deletion. When it is emptied, the actual data is still. This remains on disk until another data is created over the physical area.

Answer 367

(a)Explanation: (a) A taskbar is a bar displayed at the bottom of a GUI desktop that is used to launch and monitor running applications.

Answer 368

(b)Explanation: (b) A repeater is an electronic device that receives a signal and retransmits it at a higher level or higher power or onto the other side of an obstruction, so that the signal can cover longer distances. Because repeaters work with the actual physical signal and do not attempt to interpret the data being transmitted, they operate on the physical layer, the first layer of the OSI model.

Answer 369

(b)Explanation: (b) A CPU or microprocessor is a complete computation engine that is fabricated on a single chip called as microchip. A Microchip is a thin piece of semiconductor material carrying many integrated circuits.

Answer 370

(a)Explanation: (a) CPU (Central Processing Unit) is referred to as the brain of the computer. Most of the processing of the computer takes place here only.

Answer 371

(d)Explanation: (d) Computer applications are typically made up of multiple individual screens, which are referred to as the windows of an application. These windows are in a state of activeness or inactiveness, based on the tasks of the computer user. An active window is the currently selected window, which has primary focus within a computer application. For eg. Internet browser window you are using to read this web page is considered the active window or active program.

Answer 372

(a)Explanation: (a) The retrieval of any item, like a web page or a graphic from a web server is called a page hit. In other words, any time a piece of data matches criteria you set is called as page hit. For eg. each of the matches from a yahoo or any other search engine is called a hit.

Answer 373

(b)Explanation: (b) CD-ROM is a circular disk used to store large amounts of electronic data. CD-ROMS can hold up to 680 MB of computer data. The media is low cost and durable, and in large scale applications can be inexpensively duplicated into thousands of copies. Unlike optical disks which can be written to many times, a CD-ROM is read only.

Answer 374

(d)Explanation: (d) You need computer, ISP modem and communication software to connect to Internet. ISP (Internet service provider) provides access to the Internet. You need to sign for an account with an ISP. Modem is necessary if you are using a telephone line to access the Internet. It translates the languages that computers talk into a language that can travel across the phone lines & vice versa. Also, a communication software (Browser and software to connect you to the ISP) is required.

Answer 375

(a)Explanation: (a) E-commerce (or Electronic Commerce) is the buying and selling of goods and services using Internet. E-commerce is subdivided into 3 categoriesbusiness to business (B2B) eg. Cisco; business to consumer (B2C) eg. Amazon ; consumer to consumer (C2C) eg. eBay.

Answer 376

(a)Explanation: (a) Fault tolerance is the property that enables a system to continue operating properly in the event of the failure of some of its components.

Answer 377

(d)Explanation: (d) A freeware is copyrighted computer software which is made available for use free of charge, for an unlimited time. Any one can download them from internet and use for free. eg. Adobe PDF, Google Toolbar, Yahoo messanger, MSN messenger.

Answer 378

(d)Explanation: (d) Computer memory is volatile in nature. That its contents gets lost when power is switched off. RAM is refered to as computer's main memory. It is constantly feeding CPU with data to be processed. So, it has to be very quick. Because memory needs to be much faster than storage, it is rather more expensive than storage per KB. Computers do not normally process all the information they have at once. They also need to save same data for long term use. This data is saved on a secondary storage medium, rg. hard disk. it is non-volatile. So its more realiable. Computer storage is typically cheaper, slower and more plentiful than computer memory.

Answer 379

(e)Explanation: (e) Web browsers include a refresh button that updates the currently displayed web pages. Reload or refresh means to start the process of loading a webpage or program on a computer. Q412. The______controls a cl ient computer's resources.(a) instruction set(b) application program(c) operating system(d) server application(e) compiler (c)Explanation: (c) An operating system is a collection of software that manages computer hardware resources and provides common services for computer programs.

Answer 380

(b)Explanation: (b) To download means to receive data to a local system from a remote system or to initiate such a data transfer. Examples of remote system include a web server, FTP server, email server, etc.

Answer 381

(e)Explanation: (e) CD-RW (Compact Disk-Rewrittable) and zip disks both have the ability to store data which can be recorded on them more than once. They are basically re-recordable. Zip disks have become a popular media for backing up hard disks and for transporting large files.

Answer 382

(e)Explanation: (e) A word processor is an electronic device or computer software application that, as directed by the user performs word processing: the composition, editing, formatting and sometimes printing of any sort of written material.

Answer 383

"(b)Explanation: (b) A patch is a small piece of software that is used to correct a problem with a software program or an OS.Patches are called ""fixes"" service packs usually certain many different patches. Major software companies periodically release patches, usually downloadable from the Internet, that correct very specific problems in their software programs."

Answer 384

(b)Explanation: (b) Optical disk drive uses laser light or electromagnetic waves within or near the visible light spectrum as part of the process of reading or writing data to or from optical discs. CD, DVDs, Blu-ray discs are common examples of optical media which can be read and recorded by such drives.Q418. You can use the _____ bar to type a URL and display a Web page, or type a keyword to display a list of related Web pages.(a) Title(b) Menu(c) Search(d) Web(e) Address (e)Explanation: (e) The address bar, normally located near the top of your web browser window contains a text box where you can enter a website address (or URL) website that you want to visit. so, it is where the currently displayed website address appears.

Answer 385

(c)Explanation: (c) Tabbed browsing is a feature in Internet Explorer that enables you to open multiple websites in a single browser window. You can open webpages in new tabs and, switch between them by clicking the tabs you want to view. To open a new blank tab, click the New Tab button on the tab row or press Ctrl + T.

Answer 386

(d)Explanation: (d) • Micro phone is a digital input device that converts speech into digital audio data signal. • Scanner is a digital input device that reads or scans an image and converts it into digital format for computer editing and display. • Digital camcorders is a digital input device that captures and stores video in a digital format. eg. DV tape systems, HDV, etc.

Answer 387

(d)Explanation: (d) Source data automation (SDA) is the use of automatic processes, equipment or systems for the purpose of collecting, processing and storing data which is obtained from a source, utilizing devices such as optical scanners, bar code readers, or magnetic stripe readers. These devices collect data in its original digital form. Instead of translating or transcribing data, this allows for the direct collection of information.

Answer 388

(c)Explanation: (c) RAM (or main memory) works in conjuction with CPU. It is used in computers to store temporary instructions and data needed to complete tasks. This enables the computer's CPU to access instructions and data stored in memory very quickly.

Answer 389

(e)Explanation: (e) Every computer has operating system which is a collection of software that manages computer hardware resources and provides common services for computer programs. It also comprises application programs which is a group of programs designed for end users. They are designed to perform a specific function directly for the user.

Answer 390

(d)Explanation: (d) The World Wide Web (WWW or W3 or simply Web) is a system of interlinked hypertext documents accessed via the Internet. With a web browser, one can view web pages that may contain text, images, videos and other multimedia and navigate between them via hyperlinks.

Answer 391

(c)Explanation: (c) Volatile memory is a computer memory that requires power to maintained the stored information, i.e, it needs power to reach the computer memory. It retains the information as long as power supply is on, but when power supply is off or interrupted the stored memory is lost, eg. Cache memory and RAM (Random Access Memory) or main memory.

Answer 392

(a)Explanation: (a) A hacker is a programmer who breaks into computer system illegally using his programming skills in order to steal or change or destroy information as a form of cyber-terrorism.

Answer 393

(c)Explanation: (c) E-learning (or electronic learning) is learning utilizing electronic technologies to access educational curriculum outside of a traditional classroom. It refers to a course, program or degree delivered completely online. It is delivered online via the internet.

Answer 394

(c)Explanation: (c) Horizontal market software is application software that is useful to wide range of industries. This is opposite of vertical market software which has a scope of usefulness limited to few industries. Horizontal market software is also called productivity software, eg. word processor, web browsers, spreadsheet applications like MS-Excel and generic book keeping applications.

Answer 395

(a)Explanation: (a) A Hard disk drive is a data storage device used for storing and retrieving digital information. It consists of one or more rigid (hard) rapidly rotating disks (platters) with magnetic heads arranged on a moving actuator arm to read & write data to the surfaces.

Answer 396

(a)Explanation: (a) A computer network is a group of computer systems and other computing hardware devices that are linked together through communication channels to facilitate communication and resource- sharing among a wide range of users. Networks are commonly characterised based on their characteristics.

Answer 397

(e)Explanation: (e) Phishing is the act of attempting to acquire information such as usernames, passwords, and credit card details by masquerading as a trust worthy entity in an electronic communication. Communications purporting to be from popular social web sites, auction sites, banks, online payment processors or It administrators are commonly used to lure the unsuspecting public.

Answer 398

(d)Explanation: (d) • A CPU (Central Processing Unit) is the component in a digital computer that interprets computer program instructions and processes data. Basically, execution of computer programs is performed by CPU. • Storage devices such as hard disk, floppy disk, magnetic tapes are used to store data/information for future use.

Answer 399

(b)Explanation: (b) DVD is an optical disc storage format that stores large amounts of data, esp. high resolution audio-visual material.

Answer 400

(c)Explanation: (c) The Drafts folder is used for keeping work in progress. If you are sending an email to someone and you don't have all the information available to finish the email off then you can save it to Drafts. By saving an email to Drafts you can come back to it later at your convenience.

Answer 401

(d)Explanation: (d) A storage device is a peripheral device which is used to store data permanently i.e, they are non-volatile. It comprises of magnetic devices such as hard disk, magnetic tapes and optical devices such as DVD, CD, etc.

Answer 402

(d)Explanation: (d) The main (or primary or internal or RAM) memory of the computer is the 'Working' memory of the computer that is used to store data and programs for processing by CPU. It is a volatile memory.

Answer 403

(a)Explanation: (a) Video processing uses hardware, software and combinations of the two for editing the images & sound recorded in video files. Video processors comprises of CPU to process images & sounds and memory to store images & sounds

Answer 404

(b)Explanation: (b) Ctrl + C is the keyboard shortcut for copy the text from document & Ctrl + V is the keyboard shortcut to paste the text on document.

Answer 405

(e)Explanation: (e) Once manages decide on the category of application software they need, they must decide how they'll acquire the programs. They can choose from : • Off the shelf software that users must accept as is. • Off the sheft with alterations software allows some changes in the code to fit a businers's needs. • Custom developed software is created for a particular business or set of users. It's used for oneof- a kind applicates. • Firmware is special software installed in devices like PDAs or cells. It uses read-only memory on the device. It is tailor made.

Answer 406

(c) Explanation: (c) The basic components of a computer are divided into 4 categories- Input hardware, processing hardware, output hardware and storage hardware. Processing hardware includes the CPU which can be a dual-processor or a quad-processor.Main memory and special function cards are also in this category.

Answer 407

(c)Explanation: (c) A megabyte (abbreviated as MB) is a measurement of disk storage capacity and transmission rates, which is equal to 220 power bytes or 1,048,576 bytes or 1,000,000 bytes (1 million bytes) approximately.

Answer 408

(d)Explanation: (d) A bus is simply a circuit that connects one component of the motherboard to another. The more data a bus can handle at one time, the faster it allows information to travel. The speed of the bus, measured in megahertz (MHz) refers to how much data can move across the bus simultaneously.

Answer 409

(b)Explanation: (b) A computer's main memory (or random access memory) is the memory used to store data and programs on a temporary basis. The RAM is compared to shortterm or volatile memory, as it stores applications and information that is actively used while the system is on.

Answer 410

(c)Explanation: (c) A Lan Area Network (LAN) is a group of computers and associated devices that share a common communications line or wireless link. Typically, connected devices share the resources of a single processor or server within a small geographic area (office/ campus/home). Usually, the server has applications & data storage that are shared in common by multiple computer users.

Answer 411

(e)Explanation: (e) Microsoft office is an office suite of desktop applications developed by Microsoft Corporation that includes MS-Word for documents, MS-Excel for spread sheets, MS-Powerpoint for presentations, MS-Access for databases, etc.

Answer 412

(e)Explanation: (e) A clipboard is a special file or memory area (buffer) where data is stored temporarily before copied to another location. Many word processor, for example, use a clipboard for cutting and pasting. When you cut a block of text, the word processor copies the block of the text to the clipboard; when you paste the block, the word processor copies it from the clipboard to its final destination.

Answer 413

(e)Explanation: (e) A cursor is a movable indicator on a computer screen identifying the point that will be affected by input from the user.

Answer 414

(a)Explanation: (a) Magnetic tape is a type of sequential secondary storage medium, now used primarily for storing backups. If the computer needs to read data from the middle of a reel of tape, it must first pass all the tape before the desired piece of data.

Answer 415

(d)Explanation: (d) A spreadsheet is a grid that organizes data into columns and rows. Spreadsheets make it easy to display information and people can insert formula to work with the data. It records such things as items in inventory, income and expenses, debits & credits, etc.

Answer 416

"(b)Explanation: (b) When you are working on a document on PC, the document is temporarily stored in computer's main memory or RAM. RAM is the ""working memory"" of the computer that stores applications and programs that is actively used while the system is on."

Answer 417

(d)Explanation: (d) A modem is a device or program that enables a computer to transmit data over telephone or cable lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves. A modem converts between these two forms.

Answer 418

(a)Explanation: (a) Magnetic tape is a type of sequential secondary storage medium, now used primarily for storing backups. If the computer needs to read data from the middle of a reel of tape, it must first pass all the tape before the desired piece of data. eg, to get to point 'q' on the tape, the tape drive needs to pass through points 'a' through 'p'.

Answer 419

(a)Explanation: (a) A main frame is a large, expensive powerful computer that can handle hundreds or thousands of connected users simultaneously. Mainframes store tremendous amount of data, instructions and information. Most major corporations use mainframes for business activities. With mainframes, enterprises are able to bill millions of customers, prepare payroll for thousands of employees, manage thousands of items in inventory, etc.

Answer 420

(d)Explanation: (d) A web browser is a software application used to enable computers users to locate and acces web pages. Browsers translate the basic HTML code that allows us to see images, text, videos and listen to audios on websites, along with hyperlinks that let us travel to different web pages. The browser gets in contact with the web server and request for information.

Answer 421

(d)Explanation: (d) Storage technology refers to the technology used to store the images or information obtained through the use of some form of capture technology. This includes the medium used for storage, the compression methodology used to minimize the amount of storage medium employed, the format used to program the image or information into the medium, the encoding methods used to represent any interpretation of the stored information and the useful life of the storage medium.

Answer 422

(a)Explanation: (a) RAM (Random Access Memory) is a temporary storage area present in the system unit which holds data and instructions that the CPU needs. It is volatile memory. Contents gets lost as soon as the computer is turned off.

Answer 423

(a) Explanation: (a) In a computer, storage is a place where data is held in an electromagnetic or optical form for access by a computer processor. Storage can be divided into primary storage (which holds data in memory (RAM) and other builtin devices such as the processor's L1 cache) and secondary storage ( which holds data on hard disks, tapes and other devices requiring input/output operations).

Answer 424

"(b)Explanation: (b) Computer's main memory or RAM is called as ""working memory"" of a computer. It is a temporary storage area that holds the data and instructions that the CPU needs."

Answer 425

(d)Explanation: (d) The storage capacity refers to the maximum number of bits, bytes, words or items that can be held in a storage medium a computer system. for example, a computer with a 500 GB hard drive has a storage capacity of 50 gigabytes.

Answer 426

(b)Explanation: (b) A notebook is an extremely light weight personal computer. They typically weigh less than six pounds and are small enough to fit easily in a brief case. However, a laptop is a small portable computer-small enough that it can sit on your lap. They are some what larger in size than notebooks, in both thickness and weight.

Answer 427

"(b)Explanation: (b) Control, Alt and Shift are called modifier keys on a computer keyboard. They are often used in conjuction with other keys to perform computer keyboard shortcuts or special tasks. eg. ctrl + A will select all text in a word program. Shift + A will print capital letter ""A""."

Answer 428

(d)Explanation: (d) MICR (Magnetic Ink Character Recognition) is a character recognition technology used mainly by the banking industry to verify the legitimacy or originality of paper documents, especially cheques.

Answer 429

"(b)Explanation: (b) A motherboard is the main circuit board inside a computer that connected the different parts of a computer. The CPU, memory, hard drives, optical drives, video cards, sound card and other parts and expansion cards all connect to the motherboard directory or via cables. The motherboard is a ""backbone"" of the computer system."

Answer 430

(b)Explanation: (b) ASCII ( American standard code for Information Interchange) is an industry standard, which assigns letters, numbers and other characters within the 256 slots available in the 8-bit code. The ASCII table is divided in 3 different sections- Non printable (system codes between 0 and 31) Lower ASCII (betweem 32 and 127) and Higher ASCII (between 128 ans 255).

Answer 431

(c)Explanation: (c) A bit (short for binary digit) is the smallest unit of data in a computer. A bit has a single binary value, either 0 or 1.

Answer 432

"(a)Explanation: (a) A smart card is a plastic card with an embedded microprocessor that can be traded with data, used for telephone calling, electronic cash payments and other applications and then periodically refreshed for additional use. The microprocessor enforces access to the data on the card. The host computer and card reader actually ""talk"" to the microprocessor."

Answer 433

"(e)Explanation: (e) Debit card works under the ""Buy now, Pay now"" principle. It can be used to purchase goods. The balance in the account determines the spending limit and has a better control on the spending of the cardholders. There is no monthly bills or outstanding in case of debit card. The account will be instant debited to the extend of purchases made with a debit card, there is no need to carry cash to make purchases or pay for shopping, Hotel, Fuel, Travel, Hospital, Theatre, etc."

Answer 434

(a)Explanation: (a) World wide web (WWW or W3) is a system of interlinked hypertext documents accessed via the Internet.

Answer 435

(d)Explanation: (d) The main reason to use a list rather than a database is because it is simpler for one user to organize data for simple tasks. Databases are used for voluminous data.

Answer 436

"(a)Explanation: (a) Transistors in computers are electrical switches that store data as ""bits"" in which ""off"" (no electrical charge) and ""On"" (charge is present) represents one bit of information, either 0 or 1."

Answer 437

(b)Explanation: (b) User interface refers to the visual part of computer application or operating system through which a user interacts with a computer or a software. It determines how commands are given to the computer or the program and how information is displayed on the screen. Three main types of user interfaces are- command language, Menus and Graphical user interface.

Answer 438

(a)Explanation: (a) Multitasking refers to the ability to execute more than one task (or program) at the same time. In multitasking, only one CPU is involved, but it switches from one program to another so quickly that it gives the appearance of executing all of the programs at the same time.

Answer 439

(c)Explanation: (c) Execution is the part of the instruction cycle when data processing actually takes place. The instruction is carried out upon the data (executed). That is, when the command is executed, the CPU carried out the instructions in order by converting them into macro codes. Also, the result of the processing is stored in memory by CPU.

Answer 440

(b)Explanation: (b) Binary numbers are closely related to digital electronics. With digital electronics, a '1' means that current is present and a '0' means it is not present. The different parts of a computer communicate through pulses of current (1s and 0s). Computers can calculate complex equations and perform complex calculations. Calculating using only 1s and 0 s is called Binary system. A computer can process only 1s and 0 s.

Answer 441

(b)Explanation: (b) A programming language is a formal language designed to communicate instructions to a machine, particularly a computer. It can be used to create programs that control the behaviour of a machine and/or express algorithms precisely. The description of a programming language is usually split into the two components of syntax/form and semantics (meaning).

Answer 442

"(c)Explanation: (c) A menu bar is a horizontal bar, typically located at the top of the browser or application window below the title bar, containing drop-down menus like file, edit, font, tools, Help that allow the user to interact with the content or application in various ways. For example, In Microsoft word, ""file"" menu provides options to open a file, create a new one, save it print, etc. ""Edit"" menu allows the user to copy, paste, find and replace text, etc."

Answer 443

(d)Explanation: (d) The Internet is a global network connecting millions of computers. It is a network of networks that consists of millions of private, public, academic, businees and government networks, of local to global scope, that are linked by a broad array of electronic and optical networking technologies.

Answer 444

(c)Explanation: (c) The computer programming refers to the process of developing and implementing various sets of instructions to enable a computer to do a certain task. These instructions are considered, computer programs and help the computer to operate smoothly.

Answer 445

(a)Explanation: (a) Batch processing refers to processing transactions in a group or batch. No user interaction is required once batch processing is underway. Batch jobs can be stored up during working hours and then executed during the evening or whenever the computer is idle. For eg. processing a bank's reports at the end of a day, or generating monthly or bi-weekly payrolls.

Answer 446

(d)Explanation: (d) By default, the background color of a MS-Word document is white. However, a user can change the color of his/her own choice. To do this, open word document and choose page layout on the Ribbon, then select page color to select the background colour the user wants.

Answer 447

"(d)Explanation: (d) The control unit is the component of the processor that directs and co-ordinates most of the operations in the computer. It is the circuitry that controls the flow of information through the processor and co-ordinates the activities of the other units within it. In a way, it is the ""brain within the brain"", as it controls what happens inside the processor (CPU), which in turn controls the rest of the PC."

Answer 448

(d)Explanation: (d) DOC is a document file format used by Microsoft-Word, also used with most word processing software, including open office. DOC stands for Document file. A DOC file can contain formatted text, image, tables, graphs, charts, page formatting and print settings.

Answer 449

(c)Explanation: (c) A computer's RAM (Random Access Memory) is the memory used to store data and programs on a temporary basis. The RAM is compared to short-term or volatile memory, as it stores applications and information that is actively used while the system is on.

Answer 450

(c)Explanation: (c) Binary numbers are closely related to digital electronics. With digital electronics, a '1' means that current is present and a '0' means it is not present. The different part of a computer communicate through pulses of current (1s and 0 s). Computer can calculate complex equations and perform complex calculations. Calculating using only 1s and 0 s is called Binary system. A computer can process only 1s and 0 s.

Answer 451

(b)Explanation: (b) Updating alters the data (add, delete, etc) in one or more fields of any record contained in the file and writes that record back to the same file from which it is read.

Answer 452

(b)Explanation: (b) The 'Save' command automatically saves the file using the same name, format and location, as when it was last saved or opened from. However, using the 'Save As' command opens a dialog box in which the user can change the name of the file, the format as well as the location of where the file is saved.

Answer 453

(a)Explanation: (a) A UPS (uninterruptible power supply) is a backup device that allows your computer to keep running for atleast a short time when the primary power source is lost. It also provides protection from power surges. When power surges occur, a UPS intercepts the surge so that it doesn't damage your computer.

Answer 454

(b)Explanation: (b) When a computer obeys the instructions in a computer program it is said to be running or executing the program. Before a computer can execute a computer program, the program must be resident in memory. Once the program is loaded into memory then the following sequence is carried out: Set instructions address to the address of the first instruction. While program not finished { Fetch instruction from current instruction address. Update current instruction address, execute the fetch instruction. } This sequence is called the execution cycle.

Answer 455

(c)Explanation: (c) Booking refers to loading the first piece of software that starts a computer. Because the operating system is essential for running all other programs, it is usually the first piece of software loaded during the boot process.

Answer 456

(c)Explanation: (c) CPU (Central Processing Unit) is the brain of the computer that contains the circuitry necessary to interpret & execute program instructions. Most of the processing of a computer system is performed by CPU.

Answer 457

(a)Explanation: (a) A printer is an output device that produces the output in the form of hard copy.

Answer 458

(b)Explanation: (b) Downloading is the transmission of a file from one computer system to another usually smaller computer system. In other words, to download is to receive data from another computer into your computer.

Answer 459

(b)Explanation: (b) Non-numeric data is any form of data that is measured in words (non numbers) forms. It makes use of the letters of alphabet only eg. a,b,c ... d, eg. Employee is a non numeric data. Whereas employee score and bank balance is numeric data.

Answer 460

(c)Explanation: (c) In computer graphical user interface, drag and drop is a printing device gesture which allows you to drag objects to specific location on the screen to perform actions on them. For example, in Macintosh Environment, you can drag a document to the trashcan icon to delete it.

Answer 461

(c)Explanation: (c) Input refers to any raw data (Such as letters, symbols, commands, instructions, etc.) which is entered into computer for further processing. Input is entered via input devices (such as keyboard, mouse, etc.) into the computer.

Answer 462

(a)Explanation: (a) Super computers are the fastest and most powerful type of computer. These machines are high speed computers used by very large organizations. They are capable of processing more than one quadrillion instructions in a single second. Application requiring complex, sophisticated mathematical calculations use super computers. Large scale simulations and applications in medicine, derospace, weather forecasting, nuclear energy research, petroleum exploration, etc use a supercomputer.

Answer 463

(a) Explanation: (a) A modifier key is a special key (or combination) on a computer keyboard that temporarily modifies the normal action of another key when pressed together. By themselves, modifier keys usually do nothing, that is, pressing any of the shift, Alt or Ctrl keys alone doesn't trigger any action from the computer, eg. Ctrl + C is the shortcut for copy.

Answer 464

(d)Explanation: (d) Data are the quantities, characters or symbols on which operations are performed by a computer, being stored and transmitted in the form of electrical signals and recorded on magnetic, optical or mechanical recording media. Data forms the input to the computer.

Answer 465

(d)Explanation: (d) An icon is a small graphic representation of a program or file that, when clicked on, will be run or opened. Icons are used with Graphical User Interface (GUI) operating systems such as Microsoft Windows and Apple Mac 0 s to help quickly identify a type of file or program associated with the icon.

Answer 466

(a)Explanation: (a) A computer is an advanced electronic device that takes raw data as input from the user and processes these data under the control of set of instructions called programs and gives the result (output) and saves the output for future use.