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



__________ 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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