L10 OS LAB WS24 14-2-24

________ is a memory shared between two or more processes.

• Shared memory

• Message passing

• Pipes

• None of the mentioned

Shared memory is the fastest inter-process communication mechanism.

• fastest

• slowest

• Nitwit

• None of the mentioned

_______function is used to create the shared memory segment

• shmget()

• shmat()

• shmid

• shmaddr()

_______function is used to attach the shared segment with the process's address space.

• shmget()

• shmat()

• shmid

• shmaddr()

______is a communication medium between two or more related or interrelated processes.

• pipe

• shared memory

• message queue

• None

______is a communication medium between two or more related or interrelated processes.

• pipe

• shared memory

• message queue

• None

Communication is achieved by one process _______ into the pipe and other _____ from the pipe.

• writing, reading

• create, terminate

• close,delete

• None

shmget() The first parameter specifies the _______ (called key) identifying the shared segment.

• unique number

• binary number

• octel number

• Decimal number

shmget() The second parameter is the size of the shared segment

• 512 bytes or 1024 bytes.

• 1024 bytes or 256 bytes.

• 1024 bytes or 2048 bytes.

• 1024 bytes or 3048 bytes.

shmget() The third parameter specifies the _____ on the shared segment

• permissions

• not permissions

• valid

• invalid