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 14 of 22
Question #261
What is the approximate read speed of a typical SATA III SSD?
A. 500 MB/s
B. 5 GB/s
C. 50 MB/s
D. 50 GB/s
Discuss
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Correct Answer: Option A

Explanation:
SATA III SSDs typically achieve sequential read speeds around 500-550 MB/s, limited by the SATA III interface (600 MB/s max). NVMe SSDs are faster.
This question belongs to: Computer Memory and Storage Devices
Question #262
Which of the following is a type of memory that is manufactured with a mask during production and cannot be altered?
A. EEPROM
B. PROM
C. EPROM
D. Mask ROM
Discuss
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Correct Answer: Option D

Explanation:
Mask ROM is factory-programmed using a photomask and cannot be changed by the user. PROM can be programmed once, EPROM can be erased with UV, and EEPROM electrically.
This question belongs to: Computer Memory and Storage Devices
Question #263
What is the purpose of the 'write' operation in memory?
A. To delete data from memory
B. To store data into a memory location
C. To retrieve data from memory
D. To copy data between registers
Discuss
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Correct Answer: Option B

Explanation:
A write operation stores data into a specified memory address, altering the contents of that location.
This question belongs to: Computer Memory and Storage Devices
Question #264
Which of the following is a characteristic of magnetic tape storage?
A. Sequential access only
B. Very fast data transfer
C. Fast random access
D. Used for primary memory
Discuss
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Correct Answer: Option A

Explanation:
Magnetic tape is a sequential access medium, meaning data must be read in order. It is used for backup and archival due to high capacity and low cost.
This question belongs to: Computer Memory and Storage Devices
Question #265
What is the typical capacity of a 2.5-inch hard disk drive used in laptops?
A. 10-100 GB
B. 500 GB to 2 TB
C. 4-8 TB
D. 1-2 GB
Discuss
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Correct Answer: Option B

Explanation:
2.5-inch HDDs commonly range from 500 GB to 2 TB for laptops, with larger capacities available. 3.5-inch drives typically have higher capacities (up to 10 TB+).
This question belongs to: Computer Memory and Storage Devices
Question #266
Which of the following is a type of RAM that uses a clock signal to synchronize its operations?
A. FPM DRAM
B. SRAM
C. DRAM
D. SDRAM
Discuss
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Correct Answer: Option D

Explanation:
SDRAM (Synchronous DRAM) synchronizes with the system clock, allowing it to accept commands on every clock cycle, improving performance over asynchronous DRAM.
This question belongs to: Computer Memory and Storage Devices
Question #267
What is the role of a cache controller?
A. To handle disk scheduling
B. To manage cache memory, including hit/miss detection and data replacement
C. To allocate memory for processes
D. To translate virtual addresses
Discuss
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Correct Answer: Option B

Explanation:
The cache controller handles the logic for cache operations, determining whether requested data is in cache (hit) and managing replacement policies when cache is full.
This question belongs to: Computer Memory and Storage Devices
Question #268
Which of the following is a non-volatile memory that can be reprogrammed using electrical pulses?
A. PROM
B. Mask ROM
C. EPROM
D. EEPROM
Discuss
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Correct Answer: Option D

Explanation:
EEPROM is electrically erasable and reprogrammable, unlike EPROM which requires UV light. PROM is programmable once, and Mask ROM is fixed.
This question belongs to: Computer Memory and Storage Devices
Question #269
What is the typical data transfer rate of a USB 3.0 flash drive?
A. 5 Gbps (theoretical)
B. 10 Gbps
C. 1 Gbps
D. 480 Mbps
Discuss
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Correct Answer: Option A

Explanation:
USB 3.0 has a theoretical maximum data rate of 5 Gbps. Actual throughput is lower, but it's significantly faster than USB 2.0 (480 Mbps).
This question belongs to: Computer Memory and Storage Devices
Question #270
Which of the following is a characteristic of a solid-state drive (SSD) compared to a hard disk drive (HDD)?
A. SSDs are louder
B. SSDs are more susceptible to physical shock
C. SSDs have faster random access times
D. SSDs have higher latency
Discuss
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Correct Answer: Option C

Explanation:
SSDs have much faster random access times because there is no mechanical latency (seek time, rotational latency). They are also more resistant to shock and quieter.
This question belongs to: Computer Memory and Storage Devices
Question #271
What is the purpose of the memory alignment in programming?
A. To increase memory capacity
B. To simplify memory management
C. To ensure data is stored at addresses that are multiples of its size for performance
D. To reduce power consumption
Discuss
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Correct Answer: Option C

Explanation:
Memory alignment refers to placing data at memory addresses that are multiples of the data's size, which can improve performance by reducing the number of memory accesses needed.
This question belongs to: Computer Memory and Storage Devices
Question #272
Which of the following is a type of memory that can be erased by exposing to ultraviolet light?
A. EPROM
B. EEPROM
C. Flash
D. PROM
Discuss
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Correct Answer: Option A

Explanation:
EPROM (Erasable Programmable ROM) is erased by ultraviolet light through a quartz window. EEPROM is electrically erased.
This question belongs to: Computer Memory and Storage Devices
Question #273
What is the typical capacity of a Mini DVD?
A. 700 MB
B. 8.5 GB
C. 1.4 GB
D. 4.7 GB
Discuss
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Correct Answer: Option C

Explanation:
Mini DVDs (8 cm) hold about 1.4 GB for single-layer, compared to standard 12 cm DVDs that hold 4.7 GB.
This question belongs to: Computer Memory and Storage Devices
Question #274
Which of the following is a measure of memory speed?
A. CAS latency
B. Voltage
C. Pins
D. Capacity
Discuss
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Correct Answer: Option A

Explanation:
CAS (Column Address Strobe) latency is a measure of the delay between a memory read command and the availability of data, indicating memory speed. Capacity is size, voltage is power, and pins are physical connector.
This question belongs to: Computer Memory and Storage Devices
Question #275
What does the term 'M.2' refer to in storage devices?
A. A form factor for SSDs
B. A file system
C. A connector for hard disks
D. A type of RAM
Discuss
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Correct Answer: Option A

Explanation:
M.2 is a form factor for internal expansion cards, commonly used for SSDs, offering compact size and support for NVMe or SATA interfaces.
This question belongs to: Computer Memory and Storage Devices
Question #276
Which of the following is a type of memory that is used for the system's permanent storage of boot instructions?
A. Cache
B. ROM
C. RAM
D. Hard disk
Discuss
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Correct Answer: Option B

Explanation:
The system's boot instructions (BIOS) are stored in ROM (or flash memory) on the motherboard, which is non-volatile and retains data without power.
This question belongs to: Computer Memory and Storage Devices
Question #277
What is the typical rotational speed of a high-performance desktop hard disk in 2026?
A. 7200 RPM
B. 10,000 RPM
C. 5400 RPM
D. 15,000 RPM
Discuss
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Correct Answer: Option A

Explanation:
7200 RPM is common for desktop HDDs, while 5400 RPM is for energy-efficient or external drives. High-performance drives may be 10,000 RPM or more, but 7200 is standard.
This question belongs to: Computer Memory and Storage Devices
Question #278
What is the function of a memory address?
A. To manage memory partitions
B. To store data
C. To control memory speed
D. To uniquely identify a memory location
Discuss
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Correct Answer: Option D

Explanation:
A memory address is a unique identifier for a specific location in memory, allowing the CPU to read or write data at that location.
This question belongs to: Computer Memory and Storage Devices
Question #279
Which of the following is a type of flash memory that is typically used in BIOS chips?
A. SRAM
B. NAND
C. DRAM
D. NOR
Discuss
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Correct Answer: Option D

Explanation:
NOR flash is commonly used in BIOS chips due to its random-access capabilities and fast read speeds, allowing code execution directly from the chip.
This question belongs to: Computer Memory and Storage Devices
Question #280
What is the typical capacity of a standard microSD card?
A. Up to 32 GB
B. Up to 512 GB (common)
C. Up to 2 GB
D. Up to 2 TB (standard SDXC)
Discuss
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Correct Answer: Option B

Explanation:
MicroSD cards are available in many capacities; SDHC up to 32 GB, SDXC up to 2 TB, but common sizes in 2026 are 16, 32, 64, 128, 256, 512 GB. So 512 GB is a typical large capacity.
This question belongs to: Computer Memory and Storage Devices

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