Memory and Storage Devices MCQs

Computer

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

Page 21 of 22
Question #401
What is the typical capacity of a CD-R disc in terms of audio minutes?
A. 74 minutes
B. 80 minutes
C. 60 minutes
D. 90 minutes
Discuss
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Correct Answer: Option B

Explanation:
Standard CD-R can hold 80 minutes of audio (700 MB). Some older ones hold 74 minutes (650 MB).
This question belongs to: Computer Memory and Storage Devices
Question #402
Which of the following is a characteristic of a magnetic tape?
A. Fast data transfer
B. Sequential access
C. Used as primary storage
D. Random access
Discuss
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Correct Answer: Option B

Explanation:
Magnetic tape is a sequential access medium, meaning data must be read in order. It is used for backup and archival.
This question belongs to: Computer Memory and Storage Devices
Question #403
What is the purpose of a memory page?
A. A fixed-size block of virtual memory
B. A section of cache
C. A file on disk
D. A physical block of RAM
Discuss
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Correct Answer: Option A

Explanation:
In virtual memory, a page is a fixed-size block of virtual memory that can be mapped to a physical frame in RAM or stored on disk.
This question belongs to: Computer Memory and Storage Devices
Question #404
Which of the following is a type of memory that is used for storing data in a gaming console?
A. GDDR
B. SDRAM
C. All of the above
D. DDR4
Discuss
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Correct Answer: Option A

Explanation:
Gaming consoles often use GDDR (Graphics DDR) for high bandwidth memory, though they may also use other types. GDDR is specific to graphics.
This question belongs to: Computer Memory and Storage Devices
Question #405
What is the typical speed of a CD-ROM drive at 1x?
A. 36 MB/s
B. 1.32 MB/s
C. 4.5 MB/s
D. 150 KB/s
Discuss
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Correct Answer: Option D

Explanation:
1x CD speed is 150 KB/s (or 153.6 KB/s for some). DVD 1x is 1.32 MB/s, Blu-ray 1x is 4.5 MB/s.
This question belongs to: Computer Memory and Storage Devices
Question #406
Which of the following is a type of memory that is used for storing data in a USB drive?
A. NOR flash
B. DRAM
C. SRAM
D. NAND flash
Discuss
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Correct Answer: Option D

Explanation:
USB drives use NAND flash memory due to its high density and suitability for mass storage.
This question belongs to: Computer Memory and Storage Devices
Question #407
What is the function of a memory queue?
A. To manage cache hits
B. To allocate memory
C. To hold pending memory requests
D. To store data permanently
Discuss
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Correct Answer: Option C

Explanation:
A memory queue buffers pending memory requests, allowing the memory controller to schedule them efficiently.
This question belongs to: Computer Memory and Storage Devices
Question #408
Which of the following is a type of memory that is used for storing data in a digital audio player?
A. Magnetic tape
B. Hard disk
C. Flash memory
D. CD-ROM
Discuss
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Correct Answer: Option C

Explanation:
Digital audio players (MP3 players) typically use flash memory for storage, though some older ones used hard disks.
This question belongs to: Computer Memory and Storage Devices
Question #409
What is the typical capacity of a Blu-ray disc for 4K movies?
A. 128 GB
B. 50 GB (dual layer)
C. 100 GB (triple layer)
D. 25 GB
Discuss
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Correct Answer: Option C

Explanation:
Ultra HD Blu-ray discs for 4K movies often use triple-layer discs of 100 GB capacity, though dual-layer 50 GB is also used.
This question belongs to: Computer Memory and Storage Devices
Question #410
Which of the following is a characteristic of a random-access memory (RAM)?
A. It allows access to any memory location in any order
B. It is slower than hard disks
C. It is non-volatile
D. It is used for long-term storage
Discuss
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Correct Answer: Option A

Explanation:
RAM allows random access, meaning any location can be accessed directly without reading sequential data. It is volatile and faster than hard disks, used for temporary storage.
This question belongs to: Computer Memory and Storage Devices
Question #411
What is the purpose of a memory controller in a mobile device?
A. To handle cellular signals
B. To manage the battery
C. To manage the LPDDR memory
D. To control the display
Discuss
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Correct Answer: Option C

Explanation:
In mobile devices, the memory controller manages the LPDDR (Low-Power DDR) memory, optimizing power consumption and performance.
This question belongs to: Computer Memory and Storage Devices
Question #412
Which of the following is a type of memory that is used for storing the bootloader in a microcontroller?
A. Flash memory
B. SRAM
C. DRAM
D. EEPROM
Discuss
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Correct Answer: Option A

Explanation:
Microcontrollers often have on-chip flash memory for storing the bootloader and program code, as it is non-volatile and can be reprogrammed.
This question belongs to: Computer Memory and Storage Devices
Question #413
What is the typical speed of a DVD drive at 4x?
A. 8.8 MB/s
B. 5.28 MB/s
C. 4.0 MB/s
D. 6.0 MB/s
Discuss
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Correct Answer: Option B

Explanation:
1x DVD = 1.32 MB/s, so 4x = 5.28 MB/s.
This question belongs to: Computer Memory and Storage Devices
Question #414
Which of the following is a type of memory that is used for storing the operating system in a smartphone?
A. ROM
B. DRAM
C. SRAM
D. eMMC
Discuss
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Correct Answer: Option D

Explanation:
Smartphones use eMMC or UFS flash storage for the operating system and apps, while DRAM is used for runtime.
This question belongs to: Computer Memory and Storage Devices
Question #415
What is the function of a memory scrubber?
A. To erase memory contents
B. To clean dust from memory modules
C. To increase memory speed
D. To correct errors in memory by reading and rewriting data
Discuss
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Correct Answer: Option D

Explanation:
A memory scrubber is a background process that reads memory locations and corrects errors (using ECC) to prevent accumulation of errors.
This question belongs to: Computer Memory and Storage Devices
Question #416
Which of the following is a type of memory that is used for storing the BIOS in a modern computer?
A. All of the above
B. Flash ROM
C. EPROM
D. EEPROM
Discuss
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Correct Answer: Option A

Explanation:
Modern computers may use flash ROM, EEPROM, or EPROM for BIOS; however, flash ROM is most common. But all are non-volatile and can be used.
This question belongs to: Computer Memory and Storage Devices
Question #417
Which of the following is a characteristic of a memory module's form factor (e.g., DIMM, SO-DIMM)?
A. Memory capacity
B. Physical size and pin count
C. Data transfer rate
D. Voltage
Discuss
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Correct Answer: Option B

Explanation:
Form factor defines the physical dimensions and number of pins of the memory module, affecting compatibility.
This question belongs to: Computer Memory and Storage Devices
Question #418
What is the purpose of a memory bank in DRAM?
A. To allow independent access to different sections of memory
B. To reduce latency
C. To store multiple copies of data
D. To increase voltage
Discuss
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Correct Answer: Option A

Explanation:
Memory banks in DRAM allow concurrent access to different banks, increasing parallelism and throughput.
This question belongs to: Computer Memory and Storage Devices
Question #419
Which of the following is a type of memory that is used for storing data in a digital video recorder (DVR)?
A. Hard disk
B. Flash memory
C. All of the above
D. SSD
Discuss
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Correct Answer: Option A

Explanation:
DVRs typically use hard disks for recording large amounts of video data, though some may use SSDs or flash for smaller capacity.
This question belongs to: Computer Memory and Storage Devices
Question #420
Which of the following is a type of memory that is used for storing the firmware of a printer?
A. Flash memory
B. ROM
C. Hard disk
D. RAM
Discuss
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Correct Answer: Option A

Explanation:
Printers use flash memory to store firmware, as it is non-volatile and can be updated.
This question belongs to: Computer Memory and Storage Devices

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