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 6 of 22
Question #101
What is the primary function of the 'Sectors' found on a mechanical hard disk track layout?
A. To encrypt files automatically as they are processed.
B. To serve as the standardized addressable segments for holding a fixed number of data bytes.
C. To provide physical ventilation channels across the drive enclosure.
D. To balance the weight distribution of the spinning platter.
Discuss
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Correct Answer: Option B

Explanation:
Sectors are pie-shaped segments of concentric tracks that serve as the fundamental, fixed-size physical storage blocks on a hard drive platter.
This question belongs to: Computer Memory and Storage Devices
Question #102
Which type of memory uses a constant electrical current loop through cross-coupled inverters to hold its data state without needing refresh cycles?
A. SRAM
B. EPROM
C. Flash Memory
D. DRAM
Discuss
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Correct Answer: Option A

Explanation:
SRAM (Static RAM) uses a latching circuitry design (typically 6 transistors per cell forming cross-coupled inverters) to maintain its state as long as power is applied.
This question belongs to: Computer Memory and Storage Devices
Question #103
What size of storage data block is represented exactly by the term 'Kilobyte' (KB) in pure binary-scale computation systems?
A. 512 Bytes
B. 1000 Bytes
C. 2048 Bytes
D. 1024 Bytes
Discuss
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Correct Answer: Option D

Explanation:
In binary computer notation, a Kilobyte is calculated as $2^{10}$ bytes, which equals exactly 1024 bytes.
This question belongs to: Computer Memory and Storage Devices
Question #104
Which form of non-volatile storage contains an integrated controller that presents a standard flash chip array through a legacy IDE-compatible hard drive interface pinout?
A. SmartMedia Module
B. Memory Stick Pro
C. CompactFlash (CF) Card
D. Secure Digital Card
Discuss
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Correct Answer: Option C

Explanation:
CompactFlash cards were designed around the Parallel ATA (IDE) interface specification, allowing them to act exactly like miniature solid hard drives via legacy controllers.
This question belongs to: Computer Memory and Storage Devices
Question #105
What does the abbreviation 'NVMe' signify in modern high-speed solid state drive engineering architectures?
A. Node Vector Management Engine
B. Non-Volatile Memory Express
C. New Vector Memory Encryption
D. Network Volume Media Extension
Discuss
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Correct Answer: Option B

Explanation:
NVMe stands for Non-Volatile Memory Express. It is a communication protocol developed specifically for accessing high-speed storage media, like SSDs, via PCIe lanes.
This question belongs to: Computer Memory and Storage Devices
Question #106
Which memory location holds the specific CPU machine instruction that is currently being decoded and executed by the internal instruction logic?
A. Instruction Register (IR)
B. The Level 3 Cache
C. Memory Address Register (MAR)
D. The Program Counter
Discuss
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Correct Answer: Option A

Explanation:
The Instruction Register (IR) is the dedicated high-speed storage location inside the CPU control unit that holds the binary instruction currently undergoing decoding and execution.
This question belongs to: Computer Memory and Storage Devices
Question #107
What is the storage capacity of a standard, single-layer, single-sided Digital Versatile Disc (DVD-ROM)?
A. 4.7 GB
B. 1.44 MB
C. 8.5 GB
D. 700 MB
Discuss
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Correct Answer: Option A

Explanation:
A standard base-specification single-layer, single-sided digital versatile disc (DVD) holds a nominal maximum storage capacity of 4.7 Gigabytes.
This question belongs to: Computer Memory and Storage Devices
Question #108
Which structural layout technique links multiple physical memory chips on a RAM stick to form a unified, wider data bus width?
A. Paging
B. Memory Ranking
C. Virtual Layering
D. Sectors Allocation
Discuss
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Correct Answer: Option B

Explanation:
A memory rank is a unique block or area of data created using a collection of some or all memory chips on a single module that share a 64-bit wide data bus.
This question belongs to: Computer Memory and Storage Devices
Question #109
What storage unit is equivalent to $1024^{6}$ bytes ($2^{60}$ bytes) in computer data storage scaling scales?
A. 1 Yottabyte
B. 1 Exabyte
C. 1 Petabyte
D. 1 Zettabyte
Discuss
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Correct Answer: Option B

Explanation:
The scaling path for binary exponents places $2^{10}$ as KB, $2^{20}$ as MB, $2^{30}$ as GB, $2^{40}$ as TB, $2^{50}$ as PB, and $2^{60}$ bytes as 1 Exabyte (EB).
This question belongs to: Computer Memory and Storage Devices
Question #110
Which of the following actions will cause data stored within an EEPROM chip to be erased?
A. Shutting down the central computer system power switch.
B. Exposing the chip face to high-intensity ultraviolet light rays.
C. Applying a designated electrical voltage signal to the chip control pins.
D. Submerging the motherboard traces into a grounding solution.
Discuss
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Correct Answer: Option C

Explanation:
EEPROM stands for Electrically Erasable Programmable Read-Only Memory. It is erased and rewritten digitally by applying specific electrical currents to its pins.
This question belongs to: Computer Memory and Storage Devices
Question #111
What is the function of an asset known as a 'Solid State Hybrid Drive' (SSHD)?
A. A conventional mechanical hard drive featuring a small integrated flash memory cache buffer.
B. A cloud backup server setup using physical tape media archives.
C. A memory unit that toggles between RAM and ROM modes on demand.
D. A drive combining physical optical disc trays with flash memory chips.
Discuss
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Correct Answer: Option A

Explanation:
An SSHD combines a traditional high-capacity mechanical hard disk with a small amount of fast solid-state flash memory to cache frequently accessed files, blending capacity and speed.
This question belongs to: Computer Memory and Storage Devices
Question #112
Which problem occurs when software applications continuously allocate memory space in RAM but fail to release it back to the operating system after finishing their tasks?
A. Buffer Overflow
B. Cache Truncation
C. Disk Defragmentation
D. Memory Leak
Discuss
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Correct Answer: Option D

Explanation:
A memory leak happens when a program allocates memory space from the system heap but fails to free it up after use, reducing available RAM until the system slows down or crashes.
This question belongs to: Computer Memory and Storage Devices
Question #113
What type of data bus interface layout transfers all bits of a single data word concurrently across multiple parallel trace lines on a motherboard?
A. Serial Interface
B. Asynchronous Channel
C. Isochronous Bus
D. Parallel Interface
Discuss
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Correct Answer: Option D

Explanation:
Parallel interfaces use multiple distinct physical lines to send a collection of data bits (like an entire byte or word) at the exact same instant.
This question belongs to: Computer Memory and Storage Devices
Question #114
Which area of a mechanical hard drive contains the core initial master code used by a system BIOS to locate and launch the primary operating system partition?
A. Extended Partition Header
B. Virtual Paging Index
C. Master Boot Record (MBR)
D. File Allocation Table (FAT)
Discuss
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Correct Answer: Option C

Explanation:
The MBR (Master Boot Record) is the information located in the very first sector of a partitioned storage drive, containing the partition table and the bootloader code needed to start the OS.
This question belongs to: Computer Memory and Storage Devices
Question #115
What is the typical maximum capacity limit achievable by a single standard double-layer, double-sided Blu-ray Disc (BD-ROM)?
A. 100 GB
B. 25 GB
C. 4.7 GB
D. 50 GB
Discuss
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Correct Answer: Option D

Explanation:
A standard double-layer Blu-ray disc features two data layers on a single side, yielding a total capacity of 50 GB (25 GB per layer).
This question belongs to: Computer Memory and Storage Devices
Question #116
Which of the following metrics describes the maximum theoretical data volume that can be moved through a memory bus connection in a single second?
A. Memory Bandwidth
B. Latency
C. Clock Cycle Delay
D. Storage Density
Discuss
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Correct Answer: Option A

Explanation:
Memory bandwidth measures the rate at which data can be read from or stored into a semiconductor memory by a processor, typically measured in Gigabytes per second (GB/s).
This question belongs to: Computer Memory and Storage Devices
Question #117
What is the function of the 'Capacitor' component inside a standard Dynamic RAM (DRAM) cell structure?
A. To store an electrical charge that represents a single binary bit value (0 or 1).
B. To convert incoming alternating current lines into stable direct current.
C. To regulate the internal operating frequency clock of the memory stick.
D. To protect the chip traces against high-voltage static electricity shocks.
Discuss
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Correct Answer: Option A

Explanation:
A single DRAM memory cell consists of one transistor and one capacitor. The capacitor holds an electrical charge to represent a 1 or no charge to represent a 0.
This question belongs to: Computer Memory and Storage Devices
Question #118
Which of the following values is exactly equivalent to one single Megabyte (MB) when operating under standard decimal (SI) storage metrics?
A. $512,000$ Bytes
B. $1,024$ Kilobytes
C. $1,000,000$ Bytes
D. $1,048,576$ Bytes
Discuss
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Correct Answer: Option C

Explanation:
Under decimal SI metrics (often used by storage manufacturers), mega- means exactly one million ($10^6$), so 1 Megabyte equals exactly 1,000,000 Bytes.
This question belongs to: Computer Memory and Storage Devices
Question #119
What type of storage system uses an automated robotic mechanical assembly to swap high-capacity data cartridges or tapes without human intervention?
A. Direct-Attached RAID
B. Primary RAM Cache
C. Virtual Swap Space
D. Tertiary Storage / Tape Library
Discuss
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Correct Answer: Option D

Explanation:
Tertiary storage systems, like automated tape libraries, use robotic mechanisms to mount and dismount removable media cartridges for massive corporate data archiving.
This question belongs to: Computer Memory and Storage Devices
Question #120
Which term describes the process of systematically searching through a storage drive to rearrange split files into contiguous memory sectors?
A. Formatting
B. Compression
C. Defragmentation
D. Partitioning
Discuss
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Correct Answer: Option C

Explanation:
Defragmentation is a utility process that rearranges fragmented data files on a mechanical hard drive so their constituent pieces are stored in contiguous sectors, optimizing read speeds.
This question belongs to: Computer Memory and Storage Devices

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