LO2 computer software Flashcards

1
Q

types of software 2.1

A

open source software, closed source software, bespoke, off the shelf, shareware, freeware, embedded software

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2
Q

what is open source software? 2.1

A

code written by programmers, but can be viewed and modified by users

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3
Q

pros of open source software 2.1

A

Customisable to an individuals needs, low cost, can debug and improve the product, removing unwanted features makes software function faster

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4
Q

cons of open source software 2.1

A

security risks (e.g. malicious code could be added), prone to errors, technical skills that not all posses are required for maintenance, difficult to receive support

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5
Q

what is closed source software? 2.1

A

where code is restricted and can’t be viewed or modified

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6
Q

pros of closed source software 2.1

A

well tested, easier to get help and support, company can be held to account if it docent preform as promised

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7
Q

cons of closed source software 2.1

A

reliance on company to provide updates, not free (often), can’t debug, modify or improve the code for your own benefit

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8
Q

what is off the shelf software? 2.1

A

made for general use and can be used in different ways for different purposes (e.g. Microsoft office)

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9
Q

pros of off the shelf software 2.1

A

tested thoroughly, regular secure updates, cheaper than bespoke software, familiar with many, trustworthy

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10
Q

cons of off the shelf software 2.1

A

some are expensive for individuals and require a yearly licence for certain features like antivirus protection, comes with additional features that some won’t needs which slows down the overall profaormance

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11
Q

what is bespoke software? 2.1

A

software custom made for a specific organisation

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12
Q

pros of bespoke software 2.1

A

built to the specified requirements, unique to a companies needs, no unwanted features so software runs faster, layout can make the company look more professional as its customised to fit the companies house style

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13
Q

cons of bespoke software 2.1

A

expensive, staff may require training, original programmers may need to be kept to maintain and fix software

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14
Q

what is shareware? 2.1

A

allows a trial of the program for a limited amount of time before they have to buy a subscription or not

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15
Q

what is freeware? 2.1

A

software that if freely available to download and use. allows users to try the software and encourages them to buy a full version

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16
Q

what is embedded software? 2.1

A

a smaller system that’s installed in a larger device. has a dedicate purpose, that often runs real-time. usually has memory and storage restrictions due to their size.

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17
Q

what is applications software? 2.2

A

different to apps, as it can be used for a number of different functions depending on its needs and general purpose.

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18
Q

what is productivity software? 2.2

A

used to complete tasks accurately and efficiently. e.g. word processors, presentation software and web browsers, mailing software

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19
Q

what do databases and spreadsheets do? 2.2

A

can store both numerical and textual data ready for analysis. graphs can be created form the spreadsheets made to visualise data. records from either can be record locked so only one person can make edits, stopping data from being incorrectly overwritten. data can be atomised.

20
Q

who are development tools for? 2.2

A

for programmers who are creating or modifying software

21
Q

what is an IDE and what is it for? 2.2

A

an integrated development environment is software used to create and edit programs

22
Q

what are some of the tools an IDE has? 2.2

A

a translator (converts one type of language into another), a complier (converts instructions into machine code) and a debugger (tests code and displays errors).

23
Q

what is business software? 2.2

A

specialist software made bespoke for an orginisation

24
Q

examples of what business software can do 2.2

A

design packages pages such as CAD or CAM to design and construct products. project management software allows team collaboration, expert systems uses databases for automatic decision making e.g. a medical diagnosis

25
Q

what is utility software? 2.3

A

dedicated programs used for maintenance and organisation of a computer system.

26
Q

what is antivirus software used for? 2.3

A

used to locate and delete viruses on a computer system by scanning each file and compares it to a database of known viruses (must be updated regularly because new ones are created daily). it finds similar features to viruses in a database, identify them and deletes them

27
Q

other roles of antivirus 2.3

A

checking all incoming and outgoing emails and attachments, checking files as they are downloaded, scans the hard drive for viruses and deleting them

28
Q

what dose a firewall do? 2.3

A

manages incoming and outgoing network traffic. it processes each data packet for whether it should be given access to a network by examining the source and destination address. unexpected packets will be filtered out and not accepted.

29
Q

other roles of a firewall 2.3

A

blocking access to insecure or malicious websites, blocking certain programs from accessing the internet, blocking unexpected or unauthorised downloads, prevents specific users on a network accessing certain files

30
Q

what is defragmentation? 2.3

A

is used to rearrange file on the hard disk drive so all the parts are together again so the speed of accessing data is faster, because over time files will become fragmented (split into parts that are stored in different locations)

31
Q

what is compression? 2.3

A

decreases the size of the file. means more files can be stored and sent across a network faster.

32
Q

what are monitors, managers and cleaners? 2.3

A

system monitors

33
Q

what do system monitors do? 2.3

A

they check the recourses of a computer and display how much CUP time and memory current applications are using. task managers allow a user to close processes and applications if they have stopped responding

34
Q

what dose a disk cleaner do? 2.3

A

used to scan a hard disk drive and remove unused files to free up space.

35
Q

what dose a disk scanner do? 2.3

A

it will scan a hard disc for errors and attempt to repair them.

36
Q

what happens when you back up data? 2.3

A

a copy of data is taken so it can be used if the original data is corrupted or lost . they should be made regularly and stored in an alternative location

37
Q

what is an alternative to backing up data? 2.3

A

imaging (also known as disk cloning)

38
Q

what dose imaging do? 2.3

A

it creates an identical image of a storage drive to be stored in a different location.

39
Q

what is an operating system (OS)? 2.4

A

a software that manages the recourses of a computer system

40
Q

where is the operating system (OS) located? 2.4

A

BIOS (basic input/output system)

41
Q

what are they types of operating system? 2.4

A

single user, multi user, single processor , multiple processor , (off the shelf, open source, bespoke)

42
Q

what is a single user operating system? 2.4

A

found on most desktop computers, laptops and tablets where only one person uses the device at a single time.

43
Q

what is a multi user operating system? 2.4

A

allows more than one user to access the processor simultaneously without any negative effects.

44
Q

what is a single processor operating system? 2.4

A

has a single processor (CPU) which is shared between users by dividing the CUP time into time slices and allocating one to each user and gives the impression that their programs are running simultaneously.

45
Q

what is a multiple processor operating system? 2.4

A

has more than one processor (CPU), is a more complicated system but was a result has improved performance.