Which of the following optical formats can be written to only once but read many times? MCQ with Answer and Explanation

Which of the following optical formats can be written to only once but read many times?
A. DVD-RAM
B. CD-RW
C. BD-RE
D. DVD-R
Answer: Option D
Solution (By JKSSB Mock Tests)
The '-R' designation in optical formats stands for 'Recordable'. These discs use organic dye that can be altered by a laser only once, preventing rewriting (WORM - Write Once, Read Many).

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Practice More Memory and Storage Devices Questions

Question #1
What is the role of the memory controller in a CPU?
A. To decide which data to store in RAM
B. To handle memory addressing and data transfer
C. To manage the cache
D. To control the power supply to memory

Correct Answer: Option B


Explanation:
The memory controller manages the flow of data between the CPU and main memory, handling memory addressing, command issuance, and data transfer timing.

This question belongs to: Computer Memory and Storage Devices
Question #2
What is the typical capacity of a single-layer DVD in bytes?
A. 4.38 TB
B. 4.7 GiB
C. 4.7 GB (4.38 GiB)
D. 4.38 GB

Correct Answer: Option C


Explanation:
A single-layer DVD has a capacity of 4.7 GB (decimal) or 4.38 GiB (binary). For exams, they often say 4.7 GB.

This question belongs to: Computer Memory and Storage Devices
Question #3
What does the acronym 'NVMe' stand for?
A. Non-Volatile Main memory
B. Network Volatile Memory Engine
C. Non-Volatile Memory Express
D. New Virtual Memory Extension

Correct Answer: Option C


Explanation:
NVMe is a protocol designed for SSDs using PCIe, providing low latency and high throughput for non-volatile memory.

This question belongs to: Computer Memory and Storage Devices