What is the typical speed of a CD-ROM drive at 1x? MCQ with Answer and Explanation

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What is the typical speed of a CD-ROM drive at 1x?

A. 150 KB/s

B. 4.5 MB/s

C. 36 MB/s

D. 1.32 MB/s

Answer: Option A

Solution (By JKSSB Mock Tests)

1x CD speed is 150 KB/s (or 153.6 KB/s for some). DVD 1x is 1.32 MB/s, Blu-ray 1x is 4.5 MB/s.

This question belongs to: Computer Memory and Storage Devices

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Question #1

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Which component is missing from a Solid State Drive (SSD) that is fundamentally present in a traditional mechanical Hard Disk Drive?

A. A connection interface data bus port

B. An integrated circuit controller

C. Internal firmware instructions

D. A physical read/write actuator arm and spinning platter

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Correct Answer: Option D

Explanation:
SSDs are purely electronic devices that use flash memory chips, meaning they lack the spinning platters, spindle motors, and moving read/write arms found in mechanical HDDs.

This question belongs to: Computer Memory and Storage Devices

Question #2

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Which type of memory is used as main system memory in most computers?

A. SRAM

B. Flash

C. DRAM

D. ROM

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Correct Answer: Option C

Explanation:
DRAM (Dynamic RAM) is commonly used as the main memory (system RAM) in computers due to its higher density and lower cost compared to SRAM, although it requires periodic refreshing.

This question belongs to: Computer Memory and Storage Devices