Operating system Solved MCQs

1

. What is operating system?

• collection of programs that manages hardware resources
• system service provider to the application programs
• link to interface the hardware and application programs
• all of the mentioned

D. all of the mentioned

2

. To access the services of operating system, the interface is provided by the

• system calls
• API
• library
• assembly instructions

D. assembly instructions

3

. Which one of the following error will be handle by the operating system?

• power failure
• lack of paper in printer
• connection failure in the network
• all of the mentioned

D. all of the mentioned

4

. The main function of the command interpreter is

• to get and execute the next user-specified command
• to provide the interface between the API and application program
• to handle the files in operating system
• none of the mentioned

A. to get and execute the next user-specified command

5

. By operating system, the resource management can be done via

• time division multiplexing
• space division multiplexing
• both (a) and (b)
• none of the mentioned

C. both (a) and (b)

6

. If a process fails, most operating system write the error information to a

• log file
• another running process
• new file
• none of the mentioned

A. log file

7

. The systems which allows only one process execution at a time, are called

• uniprogramming systems
• uniprocessing systems
• unitasking systems
• none of the mentioned

A. uniprogramming systems

8

. In operating system, each process has its own

• address space and global variables
• open files
• pending alarms, signals and signal handlers
• all of the mentioned

D. all of the mentioned

9

. A process can be terminated due to

• normal exit
• fatal error
• killed by another process
• all of the mentioned

D. all of the mentioned

10

. What is the ready state of a process?

• when process is scheduled to run after some execution
• when process is unable to run until some task has been completed
• when process is using the CPU
• none of the mentioned

A. when process is scheduled to run after some execution