What is the typical speed of a Blu-ray drive at 2x? MCQ with Answer and Explanation

What is the typical speed of a Blu-ray drive at 2x?
A. 4.5 MB/s
B. 18 MB/s
C. 36 MB/s
D. 9 MB/s
Answer: Option D
Solution (By JKSSB Mock Tests)
1x Blu-ray = 4.5 MB/s, so 2x = 9 MB/s.

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Practice More Memory and Storage Devices Questions

Question #1
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. Memory Address Register (MAR)
C. The Program Counter
D. The Level 3 Cache

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 #2
What is the purpose of memory interleaving?
A. To increase memory capacity
B. To reduce power consumption
C. To improve memory access speed by using multiple memory banks
D. To provide error correction

Correct Answer: Option C


Explanation:
Memory interleaving spreads memory addresses across multiple memory banks, allowing simultaneous access to different banks and improving overall throughput.

This question belongs to: Computer Memory and Storage Devices
Question #3
Which of the following is a feature of a hybrid hard drive (SSHD)?
A. Has no moving parts
B. Is more expensive than a pure HDD but slower than an SSD
C. Combines a small SSD with a large HDD
D. Uses only flash memory

Correct Answer: Option C


Explanation:
An SSHD (Solid State Hybrid Drive) combines a traditional HDD with a small amount of flash memory (usually NAND) to cache frequently used data, providing a balance of capacity and speed.

This question belongs to: Computer Memory and Storage Devices