Which memory is directly accessible by the CPU? MCQ with Answer and Explanation

Question
Which memory is directly accessible by the CPU?
A. CD-ROM
B. USB drive
C. Hard disk
D. RAM
Answer: Option D
Solution (By JKSSB Mock Tests)
RAM is directly accessible by the CPU for reading and writing data during processing.
This question belongs to: Computer Computer Fundamentals
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Question #1
A computer system that operates purely on discrete values and binary digits (0s and 1s) to perform mathematical operations is classified as a/an:
A. Mechanical Computer
B. Hybrid Computer
C. Digital Computer
D. Analog Computer
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Correct Answer: Option C

Explanation:
Digital computers represent and process data using discrete numerical states, typically base-2 binary code.
This question belongs to: Computer Computer Fundamentals
Question #2
Which early computing system built during World War II was designed specifically to help British codebreakers decipher encrypted German Enigma communications?
A. B
B. UNIVAC I
C. Colossus
D. ENIAC
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Correct Answer: Option C

Explanation:
Colossus was the world's first programmable electronic digital computer device, built at Bletchley Park to crack military wartime codes.
This question belongs to: Computer Computer Fundamentals
Question #3
What structural component was predominantly used for internal primary data storage during the first generation of computers?
A. Magnetic Drums
B. Magnetic Core Memory
C. Floppy Disks
D. Integrated Silicon Chips
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Correct Answer: Option A

Explanation:
First-generation computers used large, rotating magnetic drums as their primary internal mechanism for holding electronic data states.
This question belongs to: Computer Computer Fundamentals
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