Which of the following describes an optical storage medium that features pre-recorded data that can never be modified or erased by the user? MCQ with Answer and Explanation

Question

Which of the following describes an optical storage medium that features pre-recorded data that can never be modified or erased by the user?

A. CD-R

B. CD-ROM

C. CD-RW

D. DVD+RW

Answer: Option B

Solution (By JKSSB Mock Tests)

A CD-ROM (Read-Only Memory) is manufactured with pre-stamped physical pits, meaning the stored information is immutable and cannot be rewritten.

This question belongs to: Computer Memory and Storage Devices

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Question #1

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Which of the following is a non-volatile semiconductor memory that can be erased and reprogrammed in large blocks rather than byte-by-byte?

A. DRAM

B. Flash Memory

C. SRAM

D. Mask ROM

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Correct Answer: Option B

Explanation:
Flash memory is a variation of EEPROM that is erased and programmed in large blocks or sectors, making it ideal for SSDs, pen drives, and SD cards.

This question belongs to: Computer Memory and Storage Devices

Question #2

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What type of computer memory is specifically designed to detect and correct single-bit data corruption errors in critical enterprise server environments?

A. Non-Volatile RAM

B. Dual-Channel RAM

C. Static SRAM

D. ECC RAM

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Correct Answer: Option D

Explanation:
ECC (Error-Correcting Code) memory contains extra data bits that allow the memory subsystem to identify and fix single-bit memory errors on the fly, preventing system crashes.

This question belongs to: Computer Memory and Storage Devices