Chapter 1: Operating Systems

Question 1

Define the DOS command: ipconfig

Answer 1

The ipconfig command will show you the basic network information of your computer.

Question 2

Define the DOS command: title

Answer 2

The title command is used to set the command prompt window title.

Question 3

Define the DOS command: cls

Answer 3

The click command clears the screen of all the previously entered commands and other text.

Question 4

Define the DOS command: dir

Answer 4

The dir command will display all the directories available in that drive.

Question 5

Define the DOS command: cd [dir name]-

Answer 5

The md command is used to change the drive or directory.

Question 6

Define the DOS command: rmdir

Answer 6

The rmdir command is used to delete an existing or completely empty folder.

Question 7

Define the DOS command: md [dir name]-

Answer 7

The md command is used to create a new folder.

Question 8

Define the DOS command: cd .

Answer 8

The cd . command is used to return the command prompt.

Question 9

Define the DOS command: date

Answer 9

The date command is used to display or change the current date.

Question 10

Define the DOS command: time

Answer 10

The time command is used to display or change the current time.

Question 11

Define the DOS command: echo

Answer 11

The echo command is used to display a message.

Question 12

Define the DOS command: exit

Answer 12

The exit command is used to quit the command prompt.

Question 13

What is the need for an operating system?

Answer 13

• An operating system bridges the gap between the user and hardware of a computer.
• The user uses an application software to send instructions.
• An operating system receives all the instructions and accordingly passes the control to hardware devices.

Question 14

Give 5 functions performed by the operating system-

Answer 14

1) Starting a computer:
• When you turn on a computer, its operating system is loaded onto its memory.
• This process is called booting.

2) Memory Management:
• The operating system allocates memory space to a task.
• It keeps track of data loaded onto the memory and its usage.

3) Resource Management:
• The operating system keeps track of processes that have hardware or software requirements.
• It has a priority system that maintains the order in which a resource is to be allocated to a process.

4) Process Management:
• A process is a task in execution.
• An operating system assigns a task given by the user to the CPU and controls the order of its execution.
• It allocates the resource in sequence.

5) Managing Files and Folders:
• The operating system allocates memory to store files and folders.
• It helps to store files under folders or sub-folders.

Question 15

What are advantages of GUI over CUI?

Answer 15

• A GUI is visually appealing and attractive.
• It is easier to work on.
• It enables its users to view, control, and switch between different applications.
• It provides a lot of options.
• It provides the facility to access the computer from a far-off location by using remote access.
• It enables its users to carry out multiple tasks at the same time.

Question 16

Explain the type of operating systems-

Answer 16

There are 3 types of operating systems-

1) Single-user, Single-task:
• This type of operating system manages the computer to let the user do one task at a time.
• The Palm Operating System used in Palm handheld devices is an example of this type of operating system.

2) Single-user, Multi-task:
• This type of operating system is the most widely used.
• Windows and Mac OS are examples of this type of operating system.
• They enable a single user to do several tasks at the same time.

3) Multi-user, Multi-task:
• This type of operating system allows many users to take advantage of a single computer’s resources.
• Linux, Unix and Windows are examples of this type of operating system.