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 19 of 22
Question #361
What is the purpose of a memory's refresh cycle?
A. To restore charge in DRAM capacitors
B. To clear memory contents
C. To increase memory speed
D. To synchronize with the CPU
Discuss
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Correct Answer: Option A

Explanation:
DRAM requires periodic refreshing to restore the charge in its capacitors, preventing data loss due to leakage.
This question belongs to: Computer Memory and Storage Devices
Question #362
Which of the following is a characteristic of a ROM chip?
A. It retains data without power
B. It can be written to easily
C. It is used for main memory
D. It is volatile
Discuss
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Correct Answer: Option A

Explanation:
ROM is non-volatile, meaning it retains its contents even when power is turned off.
This question belongs to: Computer Memory and Storage Devices
Question #363
What is the typical capacity of a USB flash drive in 2026?
A. 1 GB
B. 2 TB
C. 128 GB
D. 16 MB
Discuss
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Correct Answer: Option C

Explanation:
128 GB is a common capacity for USB flash drives in 2026, though larger capacities exist. 1 GB and 16 MB are outdated.
This question belongs to: Computer Memory and Storage Devices
Question #364
Which of the following is a type of memory that is used for long-term storage of large amounts of data?
A. Registers
B. Secondary storage
C. Cache
D. Primary storage
Discuss
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Correct Answer: Option B

Explanation:
Secondary storage (hard disks, SSDs, tapes) is used for long-term, large-capacity data storage, while primary storage (RAM) is volatile and temporary.
This question belongs to: Computer Memory and Storage Devices
Question #365
What is the function of a page table in virtual memory?
A. To allocate memory to processes
B. To map virtual pages to physical frames
C. To store the contents of cache
D. To manage disk I/O
Discuss
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Correct Answer: Option B

Explanation:
A page table is a data structure used by the MMU to translate virtual addresses to physical addresses, mapping pages to frames.
This question belongs to: Computer Memory and Storage Devices
Question #366
Which of the following is a type of memory that uses a rotating disk?
A. Hard disk
B. RAM
C. SSD
D. Flash memory
Discuss
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Correct Answer: Option A

Explanation:
Hard disk drives use rotating platters to store data magnetically. SSDs and flash memory have no moving parts.
This question belongs to: Computer Memory and Storage Devices
Question #367
What is the typical speed of a DVD drive at 16x?
A. 16 MB/s
B. 48.5 MB/s
C. 22.16 MB/s
D. 21.12 MB/s
Discuss
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Correct Answer: Option D

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
Question #368
Which of the following is a type of memory that is used for storing temporary data in a web browser?
A. Hard disk
B. ROM
C. RAM
D. Cache memory
Discuss
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Correct Answer: Option C

Explanation:
Web browsers store temporary data (cookies, cache) in RAM and also on disk, but the primary temporary storage is RAM for active sessions.
This question belongs to: Computer Memory and Storage Devices
Question #369
What is the purpose of a memory fence?
A. To reduce memory usage
B. To separate memory regions for security
C. To increase memory speed
D. To enforce memory ordering in concurrent programming
Discuss
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Correct Answer: Option D

Explanation:
A memory fence is a barrier instruction that ensures all preceding memory operations are completed before subsequent ones, maintaining consistency in multi-threaded environments.
This question belongs to: Computer Memory and Storage Devices
Question #370
Which of the following is a characteristic of a DVD-RAM?
A. It has a capacity of 25 GB
B. It is a rewritable optical disc with random access
C. It is read-only
D. It uses a blue laser
Discuss
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Correct Answer: Option B

Explanation:
DVD-RAM is a rewritable optical disc format that allows random access, similar to a hard disk, and can be rewritten many times.
This question belongs to: Computer Memory and Storage Devices
Question #371
What is the typical capacity of a single-layer DVD in bytes?
A. 4.7 GiB
B. 4.7 GB (4.38 GiB)
C. 4.38 TB
D. 4.38 GB
Discuss
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Correct Answer: Option B

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 #372
Which of the following is a type of memory that is used for storing the bootloader?
A. Cache
B. Hard disk
C. ROM
D. RAM
Discuss
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Correct Answer: Option C

Explanation:
The bootloader (initial boot code) is typically stored in ROM (BIOS) or flash memory, from which the system loads the OS from disk.
This question belongs to: Computer Memory and Storage Devices
Question #373
What is the role of a memory controller in a GPU?
A. To manage memory access for graphics data
B. To process graphics commands
C. To handle display output
D. To render 3D images
Discuss
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Correct Answer: Option A

Explanation:
In a GPU, the memory controller manages the interface with the video memory (VRAM), handling data transfers for textures, frame buffers, etc.
This question belongs to: Computer Memory and Storage Devices
Question #374
Which of the following is a type of memory that is used for storing frequently used data to speed up access?
A. Hard disk
B. Optical disc
C. ROM
D. Cache memory
Discuss
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Correct Answer: Option D

Explanation:
Cache memory is designed to store frequently accessed data for quick access, reducing average memory access time.
This question belongs to: Computer Memory and Storage Devices
Question #375
What is the typical capacity of a standard DVD+R disc?
A. 25 GB
B. 8.5 GB
C. 700 MB
D. 4.7 GB
Discuss
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Correct Answer: Option D

Explanation:
DVD+R (single-layer) holds 4.7 GB, same as DVD-R.
This question belongs to: Computer Memory and Storage Devices
Question #376
Which of the following is a characteristic of non-volatile memory?
A. Used as main memory in all computers
B. Retains data without power
C. Loses data when power is off
D. Faster than volatile memory
Discuss
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Correct Answer: Option B

Explanation:
Non-volatile memory retains data even when the power is off, unlike volatile memory which loses data.
This question belongs to: Computer Memory and Storage Devices
Question #377
What is the function of a memory sector on a hard disk?
A. It is a group of tracks
B. It is a group of cylinders
C. It is the smallest addressable unit of storage
D. It is a buffer for data
Discuss
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Correct Answer: Option C

Explanation:
A sector is the smallest unit of data that can be addressed on a hard disk, typically 512 bytes or 4 KB.
This question belongs to: Computer Memory and Storage Devices
Question #378
Which of the following is a type of memory that is used in networking devices?
A. Flash
B. DRAM
C. SRAM
D. All of the above
Discuss
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Correct Answer: Option D

Explanation:
Networking devices use various memory types: DRAM for packet buffers, SRAM for routing tables, and Flash for firmware storage.
This question belongs to: Computer Memory and Storage Devices
Question #379
What is the purpose of a memory address space?
A. To manage cache
B. To define the range of addresses available for memory
C. To store actual data
D. To control I/O devices
Discuss
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Correct Answer: Option B

Explanation:
The memory address space is the set of all possible memory addresses that the CPU can generate, limiting the maximum amount of memory that can be addressed.
This question belongs to: Computer Memory and Storage Devices
Question #380
Which of the following is a type of memory that is used for storing the BIOS settings?
A. SRAM
B. DRAM
C. CMOS RAM
D. Flash ROM
Discuss
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Correct Answer: Option C

Explanation:
CMOS RAM (often powered by a battery) stores BIOS settings such as date, time, and hardware configuration. It is non-volatile but small.
This question belongs to: Computer Memory and Storage Devices

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