Operating System Mcqs

Page No. 28

The relocation register helps in ____________


aproviding more address space to processes

✖


ba different address space to processes

✖


cto protect the address spaces of processes

✓


dnone of the mentioned

✖



In contiguous memory allocation ____________


aeach process is contained in a single contiguous section of memory

✓


ball processes are contained in a single contiguous section of memory

✖


cthe memory space is contiguous

✖


dnone of the mentioned

✖



What is the operating system?


ain the low memory

✖


bin the high memory

✖


ceither low or high memory (depending on the location of interrupt vector)

✓


dnone of the mentioned

✖



The main memory accommodates ____________


aoperating system

✓


bcpu

✖


cuser processes

✖


dall of the mentioned

✖


View Answer operating system

When the memory allocated to a process is slightly larger than the process, then ____________


ainternal fragmentation occurs

✓


bexternal fragmentation occurs

✖


cboth internal and external fragmentation occurs

✖


dneither internal nor external fragmentation occurs

✖



Sometimes the overhead of keeping track of a hole might be ____________


alarger than the memory

✖


blarger than the hole itself

✓


cvery small

✖


dall of the mentioned

✖



External fragmentation will not occur when?


afirst fit is used

✖


bbest fit is used

✖


cworst fit is used

✖


dno matter which algorithm is used, it will always occur

✓



External fragmentation exists when?


aenough total memory exists to satisfy a request but it is not contiguous

✓


bthe total memory is insufficient to satisfy a request

✖


ca request cannot be satisfied even when the total memory is free

✖


dnone of the mentioned

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__________ is generally faster than _________ and _________


afirst fit, best fit, worst fit

✓


bbest fit, first fit, worst fit

✖


cworst fit, best fit, first fit

✖


dnone of the mentioned

✖



The disadvantage of moving all process to one end of memory and all holes to the other direction, producing one large hole of available memory is ____________


athe cost incurred

✓


bthe memory used

✖


cthe CPU used

✖


dall of the mentioned

✖


View Answer the cost incurred

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