Operating System Basics Questions and Answers

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Q341
A semaphone is initialized to
  • A Negative inteer value
  • B Positive integer value
  • C Non-negative integer value
  • D Non-positive integer value
Answer: Option C
Q342
The wait operation
  • A Decrements the semaphore value
  • B Increments the semaphore value
  • C Fixes the semaphore value
  • D None of these
Answer: Option A
Q343
In semaphore, the process executing the wait is blocked if
  • A The semaphore value becomes negative
  • B The semaphore value become positive
  • C The semaphore value becomes non-positive
  • D The semaphore value becomes non-negative.
Answer: Option A
Q344
In semaphre when the order of processes tht are waitnig to be removed from the queue is first out (FIFO) then it is called
  • A Weak semaphore
  • B Strong semaphore
  • C Binary semaphore
  • D None of these
Answer: Option B
Q345
In semaphore the process blocked by wait operation is unblocked if
  • A Semaphore value becomes non-negative
  • B Semaphore value becomes non-positive
  • C Semaphore value is negative
  • D Semaphore value is positive
Answer: Option B
Q346
The compction is the technique in memory management that is used  to over come
  • A Internal fragmentation
  • B External fragmentation
  • C Both (A) and (B)
  • D None of these
Answer: Option B
Q347
Physical address (absulute address) in memory partitioning is
  • A Actual location in main memory
  • B A reference to memory location independent of current assignment
  • C A logical address
  • D None of these
Answer: Option A
Q348
The frame
  • A Can hold exactly one page of data
  • B Can hold more than one page of data
  • C Can hole two page of data
  • D None of these
Answer: Option A
Q349
The page table that is maintained by operating system
  • A Shows frame location for each page of the process.
  • B Shows actual address in main memory
  • C Referrer memory location to memory
  • D None of these
Answer: Option A
Q350
The page table that is maintained by operating system
  • A Shows frame location for each page of the process
  • B Shows actual address in main memory
  • C Referrer memory location to memory
  • D None of these
Answer: Option A

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