Operating System (OS)
A relationship between processes such that each has some part (critical section) which must not be executed while the critical section of another is being executed, is known as

semaphore
multiprogramming
mutual exclusion
multitasking
None of these

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Operating System (OS)
Capacity planning

does not depend on the monitoring tools available
is independent of the operating system
requires detailed system performance information
None of these
is not needed in small installations

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