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

multiprogramming
multitasking
mutual exclusion
None of these
semaphore

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Operating System (OS)
Indicate which, of the following, in not true about an interpreter

Interpreter generates an object program from the source program
All of these
None of these
Interpreter analyses each source statement every time it is to be executed
Interpreter is a kind of translator

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