OS Lab Quiz-1

In UNIX, each process is identified by its:

• Process Control Block

• Device Queue

• Process Identifier

• None of the mentioned

The child process can:

• Can't have another program loaded on to it

• Be a duplicate of parent process

• Never be a duplicate of parent process

• Never have another program loaded on to it

A parent process calling _________ system call will be suspended until children processes terminate.

• Exit

• Exec

• Fork

• Wait

In UNIX, the return value for the fork system call is _____ for the child process & ______ for the parent process.

• -ve , 0

• 0 , -ve

• 0 , +ve

• +ve , 0

In operating system, each process has its own

• Address space, variables

• Open files

• Program counter

• All of the above

In UNIX, which system call creates the new process?

• Create

• New

• Fork

• Exec

A process terminates when it finishes executing its final statement and ask the operating system to delete it using __________system call.

• Wait ()

• Fork ()

• Exit ()

• Exec ()

The next instruction after the loop will execute how many times?

• 8 times

• 4 times

• 6 times

• 12 times

Find out finish time of process P1 using SRTF scheduling.

• 16 sec

• 15 sec

• 20 sec

• 18 sec

What is a shell script?

• group of commands

• a file containing special symbols

• a file containing a series of commands

• group of functions