Welcome to Operating System Quiz, Randomly Selected !!

Question 1. _________ allocates the largest hole (free fragment) available in the memory.

best fit

worst fit

first fit

none of the above

Question 2. _________ page replacement alogorithm suffers from Belady's anamoly.

LRU

MRU

FIFO

LIFO

Question 3. Switching the CPU to another Process requires to save state of the old process and loading new process state is called as

Process Blocking

Context Switch

Time Sharing

None of the above

Question 4. The degree of Multiprogramming is controlled by

CPU Scheduler

Context Switching

Long-term Scheduler

Medium term Scheduler

Question 5. Suppose the time to service a page fault is on the average 10 milliseconds, while a memory access takes 1 microsecond. Then a 99.99% hit ratio results in average memory access time of

1.9999 milliseconds

1 millisecond

9.999 microseconds

1.9999 microseconds

Question 6. PCB =

Program Control Block

Process Control Block

Process Communication Block

None of the above

Question 7. In the ___________ method of data transfer, the participation of the processor is eliminated during data transfer.

Buffering

Caching

Direct Memory Access

Indirect Memory Access

Question 8. The number of processes completed per unit time is known as

Output

Throughput

Efficiency

Capacity

Question 9. Which of the following file name extension suggests that the file is Backup copy of another file

TXT

COM

BAS

BAK

Question 10. Which is not the state of the process

Blocked

Running

Ready

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