Basic Operating System MCQ

Basic Operating System MCQ
341. A semaphone is initialized to
  • Negative inteer value
  • Positive integer value
  • Non-negative integer value
  • Non-positive integer value
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342. The wait operation
  • Decrements the semaphore value
  • Increments the semaphore value
  • Fixes the semaphore value
  • None of these
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343. In semaphore, the process executing the wait is blocked if
  • The semaphore value becomes negative
  • The semaphore value become positive
  • The semaphore value becomes non-positive
  • The semaphore value becomes non-negative.
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344. In semaphre when the order of processes tht are waitnig to be removed from the queue is first out (FIFO) then it is called
  • Weak semaphore
  • Strong semaphore
  • Binary semaphore
  • None of these
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345. In semaphore the process blocked by wait operation is unblocked if
  • Semaphore value becomes non-negative
  • Semaphore value becomes non-positive
  • Semaphore value is negative
  • Semaphore value is positive
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346. The compction is the technique in memory management that is used  to over come
  • Internal fragmentation
  • External fragmentation
  • Both (A) and (B)
  • None of these
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347. Physical address (absulute address) in memory partitioning is
  • Actual location in main memory
  • A reference to memory location independent of current assignment
  • A logical address
  • None of these
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348. The frame
  • Can hold exactly one page of data
  • Can hold more than one page of data
  • Can hole two page of data
  • None of these
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349. The page table that is maintained by operating system
  • Shows frame location for each page of the process.
  • Shows actual address in main memory
  • Referrer memory location to memory
  • None of these
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350. The page table that is maintained by operating system
  • Shows frame location for each page of the process
  • Shows actual address in main memory
  • Referrer memory location to memory
  • None of these
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