Memory and Storage Devices MCQs

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Memory and Storage Devices MCQs

Practice Memory and Storage Devices MCQs with answers and detailed explanations covering RAM, ROM, cache memory, hard disk, SSD, CD/DVD, pen drive and memory units frequently asked in computer awareness exams.

438
Total Questions

Practice Questions

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Question #421
What is the function of a memory rank?
A. A measure of memory speed
B. A type of memory error
C. A part of the memory address
D. A set of DRAM chips on a module that can be accessed simultaneously
Discuss
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Correct Answer: Option D

Explanation:
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
Question #422
Which of the following is a characteristic of a hard disk's interface?
A. It determines the rotational speed
B. It determines the maximum data transfer rate
C. It determines the platter size
D. It determines the disk's capacity
Discuss
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Correct Answer: Option B

Explanation:
The interface (SATA, SAS, etc.) defines the maximum data transfer rate between the disk and the system.
This question belongs to: Computer Memory and Storage Devices
Question #423
What is the typical capacity of a CD-R in minutes of video (VCD)?
A. 60 minutes
B. 74 minutes
C. 80 minutes
D. 120 minutes
Discuss
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Correct Answer: Option B

Explanation:
VCD (Video CD) typically holds about 74 minutes of video, but with compression it can vary. Standard CD capacity is 74 or 80 minutes of audio.
This question belongs to: Computer Memory and Storage Devices
Question #424
Which of the following is a type of memory that is used for storing data in a navigation system?
A. Flash memory
B. RAM
C. ROM
D. Hard disk
Discuss
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Correct Answer: Option A

Explanation:
GPS navigation systems use flash memory for storing maps and firmware, with some using SSDs or HDDs.
This question belongs to: Computer Memory and Storage Devices
Question #425
What is the purpose of a memory delay line?
A. To increase memory speed
B. To store data permanently
C. To introduce a known delay to synchronize signals
D. To reduce power consumption
Discuss
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Correct Answer: Option C

Explanation:
Memory delay lines are used to delay signals, often in older technologies, to synchronize data paths.
This question belongs to: Computer Memory and Storage Devices
Question #426
Which of the following is a type of memory that is used for storing data in a security camera?
A. Hard disk
B. RAM
C. SD card
D. ROM
Discuss
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Correct Answer: Option C

Explanation:
Security cameras often use SD cards for local storage of footage, but may also use network storage.
This question belongs to: Computer Memory and Storage Devices
Question #427
What is the typical speed of a Blu-ray drive at 2x?
A. 18 MB/s
B. 9 MB/s
C. 36 MB/s
D. 4.5 MB/s
Discuss
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Correct Answer: Option B

Explanation:
1x Blu-ray = 4.5 MB/s, so 2x = 9 MB/s.
This question belongs to: Computer Memory and Storage Devices
Question #428
Which of the following is a characteristic of a memory's latency?
A. It is the delay between a request and response
B. It is the number of clock cycles per second
C. It is the amount of data transferred per second
D. It is the physical size of the memory
Discuss
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Correct Answer: Option A

Explanation:
Latency is the time delay from initiating a request to receiving a response, a key performance metric for memory.
This question belongs to: Computer Memory and Storage Devices
Question #429
What is the function of a memory overclocking?
A. To improve error correction
B. To increase memory capacity
C. To run memory at higher speeds than rated
D. To reduce voltage
Discuss
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Correct Answer: Option C

Explanation:
Overclocking memory involves running it at a higher clock speed than its default, to gain performance, but may require higher voltage and cooling.
This question belongs to: Computer Memory and Storage Devices
Question #430
Which of the following is a type of memory that is used for storing data in a digital camera's buffer?
A. RAM
B. Flash
C. Hard disk
D. ROM
Discuss
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Correct Answer: Option A

Explanation:
Cameras use RAM (buffer) to temporarily store photos before writing to the memory card, allowing rapid capture.
This question belongs to: Computer Memory and Storage Devices
Question #431
What is the typical capacity of a DVD-ROM in bytes?
A. 8.5 GB
B. 4.7 GB
C. 25 GB
D. 17 GB
Discuss
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Correct Answer: Option B

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
Question #432
Which of the following is a type of memory that is used for storing data in a portable gaming device?
A. RAM
B. Hard disk
C. ROM
D. Flash memory
Discuss
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Correct Answer: Option D

Explanation:
Portable gaming devices use flash memory for game cartridges and internal storage.
This question belongs to: Computer Memory and Storage Devices
Question #433
What is the purpose of a memory expansion slot?
A. To connect a hard disk
B. To add a graphics card
C. To provide power to memory
D. To allow additional RAM modules to be installed
Discuss
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Correct Answer: Option D

Explanation:
Memory expansion slots (DIMM slots) are used to add more RAM modules to increase system memory.
This question belongs to: Computer Memory and Storage Devices
Question #434
Which of the following is a type of memory that is used for storing data in a heart rate monitor?
A. RAM
B. Flash memory
C. ROM
D. EEPROM
Discuss
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Correct Answer: Option B

Explanation:
Heart rate monitors may store data in flash or EEPROM, but typically they use flash for small data logging.
This question belongs to: Computer Memory and Storage Devices
Question #435
What is the typical speed of a DVD drive at 8x?
A. 8.0 MB/s
B. 10.56 MB/s
C. 12.0 MB/s
D. 15.0 MB/s
Discuss
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Correct Answer: Option B

Explanation:
8x DVD = 8 * 1.32 = 10.56 MB/s.
This question belongs to: Computer Memory and Storage Devices
Question #436
Which of the following is a characteristic of a memory cache's associativity?
A. It determines how many cache lines map to a main memory block
B. It determines the cache speed
C. It determines the cache size
D. It determines the replacement policy
Discuss
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Correct Answer: Option A

Explanation:
Associativity defines the number of places in cache where a given main memory block can be stored, affecting hit rate and complexity.
This question belongs to: Computer Memory and Storage Devices
Question #437
What is the function of a memory controller's command scheduler?
A. To decode commands
B. To generate clock signals
C. To reorder commands for better performance
D. To handle power management
Discuss
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Correct Answer: Option C

Explanation:
The command scheduler in a memory controller reorders commands to maximize bus utilization and reduce latency.
This question belongs to: Computer Memory and Storage Devices
Question #438
Which of the following is a type of memory that is used for storing data in an e-book reader?
A. Flash memory
B. ROM
C. Hard disk
D. RAM
Discuss
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Correct Answer: Option A

Explanation:
E-book readers use flash memory for storing e-books and system software.
This question belongs to: Computer Memory and Storage Devices

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