Operating System MCQs

A. Process type variable
B. Is a data structure. it contains information related to a process such as process state, program counter, cpu register, etc. process control block is also known as task control block. ???? enroll for free data structure certification - january 2026
C. A secondary storage section
D. A block in memory

A. Process register
B. Program counter
C. Process table
D. Process unit

A. The number of processes executed per unit time
B. The number of processes in the ready queue
C. The number of processes in the i/o queue
D. The number of processes in memory

A. Only one task at a time
B. Multiple tasks at a time
C. Only two tasks at a time
D. All of the mentioned

A. Have a process running at all time
B. Have multiple programs waiting in a queue ready to run
C. To increase cpu utilization
D. None of the mentioned

A. Boot program
B. Bootloader
C. Initializer
D. Bootstrap program

A. Sending signals to cpu through bus
B. Executing a special operation called system call
C. Executing a special program called system program
D. Executing a special program called interrupt trigger program

A. Hardware generated interrupt caused by an error
B. Software generated interrupt caused by an error
C. User generated interrupt caused by an error
D. None of the mentioned

A. Information service request
B. Interrupt service request
C. Interrupt service routine
D. Information service routine

A. It is an address that is indexed to an interrupt handler
B. It is a unique device number that is indexed by an address
C. It is a unique identity given to an interrupt
D. None of the mentioned