Which mechanism allows an operating system to simulate more memory than the computer physically contains by transferring data temporarily to secondary storage? MCQ with Answer and Explanation
Which mechanism allows an operating system to simulate more memory than the computer physically contains by transferring data temporarily to secondary storage?
A. Dynamic RAM
B. Virtual Memory
C. Cache Memory
D. Read-Only Memory
Answer: Option B
Solution (By JKSSB Mock Tests)
Virtual memory combines physical RAM with temporary space on the hard drive (paging/swap file) to let the system handle larger memory loads than physical RAM capacity allows.
Which file allocation method stores blocks of a file in an ordered sequence linked together via pointers, eliminating external fragmentation but making random access slow?
Explanation:
Linked allocation chains blocks together using pointers, allowing dynamic size expansions but requiring linear scanning to read a specific internal offset.
Explanation:
A semaphore is a protected variable or abstract data type used to synchronize concurrent process threads accessing common system resources.
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