What is the typical speed of a DVD drive at 8x? MCQ with Answer and Explanation

Question
What is the typical speed of a DVD drive at 8x?
A. 12.0 MB/s
B. 10.56 MB/s
C. 15.0 MB/s
D. 8.0 MB/s
Answer: Option B
Solution (By JKSSB Mock Tests)
8x DVD = 8 * 1.32 = 10.56 MB/s.
This question belongs to: Computer Memory and Storage Devices
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Practice More Memory and Storage Devices Questions

Question #1
How many Kilobytes (KB) constitute exactly one Gigabyte (GB) in standard binary computing notation?
A. 512,000 KB
B. 1,000,000 KB
C. 1,048,576 KB
D. 1,024 KB
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Correct Answer: Option C

Explanation:
Since 1 MB = 1024 KB and 1 GB = 1024 MB, multiplying 1024 by 1024 gives exactly 1,048,576 Kilobytes in one Gigabyte.
This question belongs to: Computer Memory and Storage Devices
Question #2
Which memory location holds the specific CPU machine instruction that is currently being decoded and executed by the internal instruction logic?
A. Instruction Register (IR)
B. The Program Counter
C. Memory Address Register (MAR)
D. The Level 3 Cache
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Correct Answer: Option A

Explanation:
The Instruction Register (IR) is the dedicated high-speed storage location inside the CPU control unit that holds the binary instruction currently undergoing decoding and execution.
This question belongs to: Computer Memory and Storage Devices
Question #3
What is the typical capacity of a DVD-ROM in bytes?
A. 4.7 GB
B. 17 GB
C. 25 GB
D. 8.5 GB
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Correct Answer: Option A

Explanation:
Standard DVD-ROM holds 4.7 GB (single layer) or 8.5 GB (dual layer). But the most common is 4.7 GB.
This question belongs to: Computer Memory and Storage Devices
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