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.

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Total Questions

Practice Questions

Page 13 of 22
Question #241
What is the function of the 'read' operation in memory?
A. To move data between registers
B. To retrieve data from a memory location
C. To clear a memory location
D. To store data to a memory location
Discuss
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Correct Answer: Option B

Explanation:
A read operation fetches data from a specified memory address and transfers it to the CPU or another component.
This question belongs to: Computer Memory and Storage Devices
Question #242
Which of the following is a common type of non-volatile memory used in BIOS chips?
A. EPROM
B. RAM
C. DRAM
D. SRAM
Discuss
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Correct Answer: Option A

Explanation:
BIOS chips historically used EPROM or EEPROM (flash). EPROM is a type of non-volatile ROM. Among options, EPROM is non-volatile and used for firmware.
This question belongs to: Computer Memory and Storage Devices
Question #243
What is the typical transfer rate of a USB 2.0 flash drive?
A. 5 Gbps
B. 60 MB/s
C. 10 Gbps
D. 480 Mbps
Discuss
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Correct Answer: Option D

Explanation:
USB 2.0 has a maximum signaling rate of 480 Mbps (megabits per second), which translates to about 60 MB/s theoretical, but actual is less.
This question belongs to: Computer Memory and Storage Devices
Question #244
Which of the following memory technologies is used in cache memory?
A. SRAM
B. DRAM
C. SDRAM
D. RDRAM
Discuss
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Correct Answer: Option A

Explanation:
Cache memory is built with SRAM (Static RAM) due to its speed, though it is more expensive and less dense than DRAM.
This question belongs to: Computer Memory and Storage Devices
Question #245
What is the role of a memory controller hub (MCH)?
A. To connect the CPU to I/O devices
B. To connect the CPU to graphics and memory
C. To control the hard disk
D. To manage power delivery
Discuss
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Correct Answer: Option B

Explanation:
The Memory Controller Hub (Northbridge) traditionally connects the CPU to memory and high-speed graphics. In modern CPUs, the memory controller is integrated.
This question belongs to: Computer Memory and Storage Devices
Question #246
Which of the following is an advantage of optical storage over magnetic storage?
A. More durable (resistant to magnetic fields)
B. Lower cost per GB
C. Faster read/write speeds
D. Higher capacity
Discuss
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Correct Answer: Option A

Explanation:
Optical discs are immune to magnetic fields and are relatively durable under normal handling, while magnetic disks can be damaged by strong magnetic fields. However, optical is slower and lower capacity.
This question belongs to: Computer Memory and Storage Devices
Question #247
What is the typical data rate of a 1x DVD drive?
A. 11.08 MB/s
B. 4.5 MB/s
C. 36 MB/s
D. 1.32 MB/s
Discuss
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Correct Answer: Option D

Explanation:
1x DVD has a data transfer rate of 11.08 Mbit/s = 1.32 MB/s. Blu-ray 1x is 36 Mbit/s = 4.5 MB/s. CD 1x is 150 KB/s.
This question belongs to: Computer Memory and Storage Devices
Question #248
Which memory unit is typically used to express the speed of a processor's cache?
A. MHz
B. GB/s
C. MB
D. MT/s
Discuss
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Correct Answer: Option A

Explanation:
Cache speed is often expressed in MHz (or GHz) as it operates at the CPU clock speed. RAM is expressed in MT/s or MHz as well.
This question belongs to: Computer Memory and Storage Devices
Question #249
What is the function of a sector on a hard disk?
A. A storage area for file metadata
B. A basic unit of storage on the disk
C. A collection of cylinders
D. A single track on the disk
Discuss
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Correct Answer: Option B

Explanation:
A sector is the smallest unit of data that can be read or written on a hard disk, typically 512 bytes or 4 KB in modern drives.
This question belongs to: Computer Memory and Storage Devices
Question #250
Which of the following is a volatile memory type?
A. Magnetic disk
B. SRAM
C. ROM
D. Flash memory
Discuss
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Correct Answer: Option B

Explanation:
SRAM is volatile, meaning it loses data when power is removed. Flash, ROM, and magnetic disk are non-volatile.
This question belongs to: Computer Memory and Storage Devices
Question #251
What is the typical access time of a modern SSD?
A. About 50 ms
B. Less than 0.1 ms
C. About 5 ms
D. About 10 ms
Discuss
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Correct Answer: Option B

Explanation:
SSDs have access times in the microseconds range, typically less than 0.1 ms (100 microseconds). HDDs have access times around 5-10 ms.
This question belongs to: Computer Memory and Storage Devices
Question #252
Which of the following is a type of memory that can be written to and read from, but loses data when power is off?
A. Flash memory
B. RAM
C. EEPROM
D. ROM
Discuss
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Correct Answer: Option B

Explanation:
RAM is volatile; it can be read and written, but contents are lost when power is turned off. EEPROM, flash, and ROM are non-volatile.
This question belongs to: Computer Memory and Storage Devices
Question #253
What is the purpose of a hard disk's actuator arm?
A. To move the read/write head across the platter
B. To control the spindle motor
C. To rotate the platter
D. To hold the platters
Discuss
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Correct Answer: Option A

Explanation:
The actuator arm positions the read/write heads over the correct track on the platter. It moves the heads radially across the disk surface.
This question belongs to: Computer Memory and Storage Devices
Question #254
Which of the following is a common interface for optical drives?
A. SCSI
B. All of the above
C. IDE
D. SATA
Discuss
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Correct Answer: Option B

Explanation:
Optical drives have been available with SATA, IDE, and SCSI interfaces, though SATA is the most common in modern systems.
This question belongs to: Computer Memory and Storage Devices
Question #255
What does the term 'DDR4' indicate about a memory module?
A. It has four data rate channels
B. It is the fourth generation of Double Data Rate memory
C. It stands for Digital Data Register 4
D. It is a type of ROM
Discuss
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Correct Answer: Option B

Explanation:
DDR4 is the fourth generation of Double Data Rate (DDR) SDRAM, offering higher speeds, lower voltage, and increased density compared to DDR3.
This question belongs to: Computer Memory and Storage Devices
Question #256
Which of the following is a characteristic of flash memory?
A. It has no moving parts
B. It is slower than DRAM
C. It is used only for firmware
D. It is volatile
Discuss
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Correct Answer: Option A

Explanation:
Flash memory is non-volatile and has no moving parts (solid-state). It is used in SSDs, pen drives, and memory cards. It is slower than DRAM but faster than HDDs.
This question belongs to: Computer Memory and Storage Devices
Question #257
What is the typical capacity of a single-layer BD-R (Blu-ray recordable) disc?
A. 4.7 GB
B. 50 GB
C. 128 GB
D. 25 GB
Discuss
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Correct Answer: Option D

Explanation:
Single-layer BD-R holds 25 GB, dual-layer 50 GB, and triple-layer 100 GB or more. Standard Blu-ray is 25 GB.
This question belongs to: Computer Memory and Storage Devices
Question #258
Which of the following is used to measure the data transfer rate of a memory bus?
A. Both A and B
B. Bits per second
C. Bytes per second
D. Hertz
Discuss
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Correct Answer: Option A

Explanation:
Data transfer rate can be expressed in bytes per second (e.g., MB/s) or bits per second (e.g., Mbps), and the bus clock is in Hz. But the rate is typically Bps or bps.
This question belongs to: Computer Memory and Storage Devices
Question #259
What is the function of a memory slot on a motherboard?
A. To provide power to the system
B. To connect the RAM module
C. To hold the CPU
D. To attach the hard disk
Discuss
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Correct Answer: Option B

Explanation:
Memory slots (DIMM slots) are used to install RAM modules onto the motherboard, providing the connection between RAM and the memory bus.
This question belongs to: Computer Memory and Storage Devices
Question #260
Which of the following is a type of non-volatile memory that is commonly used in SSDs?
A. NAND flash
B. EPROM
C. SDRAM
D. DRAM
Discuss
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Correct Answer: Option A

Explanation:
NAND flash is the primary storage technology used in SSDs, offering high capacity, fast access, and non-volatility.
This question belongs to: Computer Memory and Storage Devices

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