In a multiprocessor system, what is NUMA? MCQ with Answer and Explanation

In a multiprocessor system, what is NUMA?
A. Non-Universal Memory Architecture
B. New Unified Memory Access
C. Network Unified Memory Architecture
D. Non-Uniform Memory Access, where memory access times vary based on the processor's location
Answer: Option D
Solution (By JKSSB Mock Tests)
NUMA is a memory architecture where each processor has local memory, but accessing remote memory takes longer, affecting performance.

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Practice More Operating Systems Questions

Question #1
What is the function of the 'Translation Lookaside Buffer (TLB)' in hardware memory management?
A. To optimize audio output signals.
B. To serve as a high-speed hardware cache holding recent virtual-to-physical address mappings to bypass slower page table lookups.
C. To store internet encryption keys permanently.
D. To buffer documents headed to local area network printers.

Correct Answer: Option B


Explanation:
The TLB is an associative hardware cache inside the MMU that stores recent page translations, dramatically accelerating virtual memory access speeds.

This question belongs to: Computer Operating Systems
Question #2
What is the primary objective of a 'Cold Boot' procedure?
A. Lowering the operational temperature of the CPU fan.
B. Restarting the computer purely through terminal soft commands.
C. Starting up a computer system that was completely powered off, initializing hardware components anew.
D. Running an offline antivirus scan.

Correct Answer: Option C


Explanation:
A cold boot occurs when the power switch is flipped from 'Off' to 'On', triggering a complete hardware check and OS load from scratch.

This question belongs to: Computer Operating Systems
Question #3
Which Linux command is used to display the current environment variables?
A. All of the above
B. env
C. set
D. printenv

Correct Answer: Option A


Explanation:
env, printenv, and set all display environment variables; set also shows shell variables.

This question belongs to: Computer Operating Systems