System Administrator 2026 — MCQs City

System Administrator 2026

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Locality of reference implies that the page reference being made by a process ____________

A. Will always be to the page used in the previous page reference
B. Is likely to be one of the pages used in the last few page references
C. Will always be one of the pages existing in memory
D. Will always lead to page faults

Because of virtual memory, the memory can be shared among ____________

A. Processes
B. Threads
C. Instructions
D. None of the mentioned

_____ is the concept in which a process is copied into the main memory from the secondary memory according to the requirement.

A. Paging
B. Demand paging
C. Segmentation
D. Swapping

The pager concerns with the ____________

A. Individual page of a process
B. Entire process
C. Entire thread
D. First page of a process

Swap space exists in ____________

A. Primary memory
B. Secondary memory
C. Cpu
D. None of the mentioned

When a program tries to access a page that is mapped in address space but not loaded in physical memory, then ____________

A. Segmentation fault occurs
B. Fatal error occurs
C. Page fault occurs
D. No error occurs

Effective access time is directly proportional to ____________

A. Page-fault rate
B. Hit ratio
C. Memory access time
D. None of the mentioned

In FIFO page replacement algorithm, when a page must be replaced ____________

A. Oldest page is chosen
B. Newest page is chosen
C. Random page is chosen
D. None of the mentioned

Which algorithm chooses the page that has not been used for the longest period of time whenever the page required to be replaced?

A. First in first out algorithm
B. Additional reference bit algorithm
C. Least recently used algorithm
D. Counting based page replacement algorithm

A process is thrashing if ____________

A. It spends a lot of time executing, rather than paging
B. It spends a lot of time paging than executing
C. It has no memory allocated to it
D. None of the mentioned

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