What is the function of a memory rank? MCQ with Answer and Explanation

Question
What is the function of a memory rank?
A. A type of memory error
B. A part of the memory address
C. A set of DRAM chips on a module that can be accessed simultaneously
D. A measure of memory speed
Answer: Option C
Solution (By JKSSB Mock Tests)
A memory rank is a group of DRAM chips on a DIMM that are accessed together to provide a data bus width (e.g., 64-bit).
This question belongs to: Computer Memory and Storage Devices
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Practice More Memory and Storage Devices Questions

Question #1
Which of the following is a characteristic of a read-only memory (ROM)?
A. Data can be modified easily
B. It is used as main memory
C. Data is permanent and cannot be changed by normal operations
D. It is volatile
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Correct Answer: Option C

Explanation:
ROM is non-volatile and its contents are typically fixed during manufacturing or programming; it cannot be changed by normal system operations.
This question belongs to: Computer Memory and Storage Devices
Question #2
What is the purpose of the 'TRIM' command in SSDs?
A. To improve write performance by informing the SSD which blocks are no longer in use
B. To erase data securely
C. To defragment the drive
D. To increase the drive's lifespan
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Correct Answer: Option A

Explanation:
The TRIM command allows the operating system to notify the SSD about data blocks that are no longer considered in use, so the SSD can erase them during idle time, improving write performance and longevity.
This question belongs to: Computer Memory and Storage Devices
Question #3
What is the typical speed of a DVD drive at 16x?
A. 22.16 MB/s
B. 21.12 MB/s
C. 48.5 MB/s
D. 16 MB/s
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Correct Answer: Option B

Explanation:
1x DVD is 1.32 MB/s, so 16x = 16 * 1.32 = 21.12 MB/s.
This question belongs to: Computer Memory and Storage Devices
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