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 5 of 22
Question #81
Which operational characteristic distinguishes a 'Cold Boot' from a 'Warm Boot' regarding system memory?
A. A cold boot bypasses the execution of the BIOS firmware instructions completely.
B. A warm boot systematically reformats the secondary storage partitions.
C. A cold boot requires cooling the RAM modules manually with specialized fans.
D. A cold boot starts from a complete zero-power state, completely clearing all volatile memory contents.
Discuss
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Correct Answer: Option D

Explanation:
A cold boot involves turning on a computer from a powered-off state, initializing all hardware and starting with cleared volatile memory, whereas a warm boot simply restarts the OS without cutting hardware power.
This question belongs to: Computer Memory and Storage Devices
Question #82
Which memory chip technology allows data blocks to be written and erased simultaneously using low-voltage electrical signals over standard circuit layouts?
A. UV-EPROM
B. Mask ROM
C. Flash Memory
D. Core Magnetic Grid
Discuss
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Correct Answer: Option C

Explanation:
Flash memory is an advanced form of EEPROM that allows multiple memory locations to be erased or written in one collective block operation using electrical currents.
This question belongs to: Computer Memory and Storage Devices
Question #83
What configuration setting on traditional IDE/PATA hard drives designated which drive controlled the shared data bus ribbon cable?
A. SATA speed toggle
B. Master/Slave jumper pins
C. Firmware partition flag
D. BIOS overclock profile
Discuss
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Correct Answer: Option B

Explanation:
Legacy IDE/PATA drive architectures required users to set small physical plastic blocks (jumpers) over pins to designate a drive as 'Master' or 'Slave' on a shared ribbon cable.
This question belongs to: Computer Memory and Storage Devices
Question #84
Which of the following represents an explicit example of an optical disk storage system?
A. Magnetic Spool Tape
B. Internal RAM Module
C. Digital Versatile Disc (DVD)
D. Solid State Drive
Discuss
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Correct Answer: Option C

Explanation:
Digital Versatile Discs (DVDs) store binary code as physical micro-structures read via focused optical laser pickup assemblies.
This question belongs to: Computer Memory and Storage Devices
Question #85
How many bits are contained within a data block size of exactly 4 Bytes?
A. 16 bits
B. 128 bits
C. 32 bits
D. 64 bits
Discuss
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Correct Answer: Option C

Explanation:
Since one byte is strictly defined as 8 bits, a 4-byte block contains exactly $4 imes 8 = 32$ bits.
This question belongs to: Computer Memory and Storage Devices
Question #86
Which term describes the file area on a hard drive that the operating system allocates for virtual memory use when physical RAM capacity runs out?
A. Index Table
B. Directory File
C. Page File / Swap File
D. Root Partition
Discuss
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Correct Answer: Option C

Explanation:
The operating system maps out a dedicated storage partition or hidden file structure on secondary drives, known as a page file or swap file, to manage virtual memory overflows.
This question belongs to: Computer Memory and Storage Devices
Question #87
What is the primary role of the address bus in a computer's memory architecture?
A. To communicate the physical memory location coordinate being targeted for read or write.
B. To transfer the actual data payload bits between components.
C. To regulate the processing clock speed of the graphics adapter.
D. To supply electrical voltage to the dynamic memory refresh circuits.
Discuss
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Correct Answer: Option A

Explanation:
The address bus is a directional pathway used exclusively by the CPU to point to the specific hardware memory address location it wants to interact with.
This question belongs to: Computer Memory and Storage Devices
Question #88
Which storage device category requires continuous physical rotation of a platter medium to retrieve saved digital blocks?
A. Hard Disk Drive (HDD)
B. NVMe M.2 Card
C. SDHC Card
D. USB Flash Drive
Discuss
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Correct Answer: Option A

Explanation:
Traditional mechanical HDDs use an electric spindle motor to rotate magnetic platters past stationary read/write heads to locate data.
This question belongs to: Computer Memory and Storage Devices
Question #89
What type of memory module architecture includes a specialized hardware register between the memory controller and the DRAM chips to stabilize heavy enterprise server setups?
A. Registered / Buffered RAM
B. Static SRAM
C. Non-volatile Flash Module
D. Unbuffered RAM
Discuss
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Correct Answer: Option A

Explanation:
Registered (or buffered) RAM places an internal register between the system memory controller and the DRAM modules, reducing electrical load and increasing system stability for enterprise server arrays.
This question belongs to: Computer Memory and Storage Devices
Question #90
Which storage allocation unit represents the equivalent value of exactly $2^{50}$ bytes?
A. 1 Exabyte
B. 1 Terabyte
C. 1 Zettabyte
D. 1 Petabyte
Discuss
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Correct Answer: Option D

Explanation:
Following binary exponential calculations: $2^{10}$ = KB, $2^{20}$ = MB, $2^{30}$ = GB, $2^{40}$ = TB, and $2^{50}$ = 1 Petabyte (PB).
This question belongs to: Computer Memory and Storage Devices
Question #91
What structural issue happens when data files are written, deleted, and modified repeatedly, causing a mechanical hard drive's storage space to become scattered across non-contiguous areas?
A. Thrashing
B. Degradation
C. Fragmentation
D. Decryption
Discuss
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Correct Answer: Option C

Explanation:
Fragmentation occurs when files are broken up and saved in scattered, non-contiguous clusters across a mechanical disk, forcing the drive heads to move more and slowing access times.
This question belongs to: Computer Memory and Storage Devices
Question #92
Which of the following is a classic example of a sequential-access data media format?
A. Blu-ray Disc
B. Magnetic Tape
C. Solid State Drive
D. Floppy Disk
Discuss
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Correct Answer: Option B

Explanation:
Magnetic tape systems lack addressable coordinate sectors, forcing the drive mechanism to advance or rewind linearly through the tape roll to reach a specific block.
This question belongs to: Computer Memory and Storage Devices
Question #93
What feature allows modern computer memory controllers to access two independent memory modules simultaneously, effectively doubling the standard data transfer bandwidth?
A. Dual-Channel Architecture
B. Hyper-threading
C. Direct Memory Access
D. ECC Error Correction
Discuss
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Correct Answer: Option A

Explanation:
Dual-channel architecture introduces two independent memory bus pathways, allowing the controller to communicate with two RAM sticks concurrently to increase data throughput.
This question belongs to: Computer Memory and Storage Devices
Question #94
Which type of ROM requires a specialized hardware device called a 'ROM programmer' or 'burner' to write data onto it for the first time?
A. SRAM
B. PROM
C. DRAM
D. Mask ROM
Discuss
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Correct Answer: Option B

Explanation:
PROM (Programmable Read-Only Memory) chips are manufactured blank and require a dedicated hardware device called a PROM burner to permanently blow internal fuses, writing the data once.
This question belongs to: Computer Memory and Storage Devices
Question #95
What is the name of the high-speed data transfer mechanism that allows specific hardware subsystems to access main system memory independently of the central processing unit?
A. Interrupt Request (IRQ)
B. Bus Mastering
C. Paging Protocol
D. Direct Memory Access (DMA)
Discuss
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Correct Answer: Option D

Explanation:
DMA (Direct Memory Access) allows peripherals like network cards or graphics adapters to read/write directly to system RAM without routing the data through the CPU, reducing processor overhead.
This question belongs to: Computer Memory and Storage Devices
Question #96
Which of the following storage devices has no physical moving parts whatsoever?
A. DVD-ROM Drive
B. USB Flash Drive
C. Floppy Disk Drive
D. Hard Disk Drive
Discuss
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Correct Answer: Option B

Explanation:
USB flash drives are built using solid-state semiconductor integrated circuits, meaning they contain no motors, spin platters, or mechanical components.
This question belongs to: Computer Memory and Storage Devices
Question #97
How many bits are contained in a standard hexademical digit stored in computer memory?
A. 2 bits
B. 8 bits
C. 16 bits
D. 4 bits
Discuss
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Correct Answer: Option D

Explanation:
A single hexadecimal character represents values from 0 to 15, which maps to a 4-bit binary sequence (a nibble).
This question belongs to: Computer Memory and Storage Devices
Question #98
Which component manages data transfers inside a computer system by implementing the 'Least Recently Used' (LRU) algorithm?
A. BIOS Boot Loader
B. Optical Drive Firmware
C. Hard drive file allocation table
D. Cache Controller
Discuss
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Correct Answer: Option D

Explanation:
The cache controller utilizes replacement policies like Least Recently Used (LRU) to determine which older data blocks to discard when space is needed for new cache lines.
This question belongs to: Computer Memory and Storage Devices
Question #99
What type of computer memory is specifically designed to detect and correct single-bit data corruption errors in critical enterprise server environments?
A. Dual-Channel RAM
B. Non-Volatile RAM
C. Static SRAM
D. ECC RAM
Discuss
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Correct Answer: Option D

Explanation:
ECC (Error-Correcting Code) memory contains extra data bits that allow the memory subsystem to identify and fix single-bit memory errors on the fly, preventing system crashes.
This question belongs to: Computer Memory and Storage Devices
Question #100
Which physical attribute limits the maximum total storage volume capacity of a standard optical disc?
A. The rotational speed of the spindle electric motor.
B. The track pitch distance and the wavelength of the reading laser beam.
C. The physical thickness of the label paper.
D. The type of plastic used in the outer tray assembly.
Discuss
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Correct Answer: Option B

Explanation:
Optical data capacity depends on how tightly tracks can be spaced (track pitch) and how small the laser's focal point can be, which is determined by the laser's wavelength.
This question belongs to: Computer Memory and Storage Devices

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