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 4 of 22
Question #61
Why is cache memory constructed using Static RAM (SRAM) instead of Dynamic RAM (DRAM)?
A. SRAM is non-volatile and preserves data when power is disconnected.
B. SRAM requires complex capacitor discharge routines.
C. SRAM is much cheaper to scale up in size.
D. SRAM does not need refresh cycles, allowing for significantly higher operation speeds.
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
SRAM is substantially faster than DRAM because it uses a multi-transistor configuration (flip-flops) that retains state instantly without periodic electrical refreshing.
This question belongs to: Computer Memory and Storage Devices
Question #62
What is the function of the control unit when interacting with computer memory?
A. It translates physical data sectors into optical laser frequencies.
B. It formats empty partitions into recognizable file structures like NTFS.
C. It permanently erases malicious software definitions from the ROM.
D. It directs the flow of data and instructions between the CPU registers and memory.
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
The control unit within the CPU coordinates data routing and instruction fetching operations between internal storage areas, registers, and system memory.
This question belongs to: Computer Memory and Storage Devices
Question #63
Which of the following describes the core distinction between standard RAM and ROM?
A. RAM is positioned outside the motherboard architecture entirely.
B. RAM can only be read, while ROM can be both read and written to.
C. RAM is volatile and temporary, whereas ROM is non-volatile and permanent.
D. RAM relies entirely on optical lasers, while ROM utilizes magnetic fields.
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
RAM loses all data immediately when system power drops (volatile), while ROM retains its stored instructions permanently without electrical current (non-volatile).
This question belongs to: Computer Memory and Storage Devices
Question #64
What happens during a computer memory 'Page Fault' scenario?
A. The system architecture detects an invalid alphanumeric input string.
B. The physical memory chip catches fire due to over-voltage.
C. A sector on the hard disk drive undergoes permanent mechanical erosion.
D. The CPU requests a data block from logical memory that is not currently loaded into physical RAM.
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
A page fault occurs when a running program attempts to access a memory page mapped into its virtual address space, but that page is not presently resident in physical RAM.
This question belongs to: Computer Memory and Storage Devices
Question #65
Which measurement represents the standard rotational velocity metric of modern high-performance desktop mechanical hard drives?
A. Gbps (Gigabits per second)
B. RPM (Rotations per minute)
C. MHz (Megahertz)
D. IOPS (Input/Output Operations Per Second)
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Mechanical hard drive speeds are fundamentally constrained by how fast their physical platters spin, measured in Rotations Per Minute (RPM), commonly 5400 or 7200 RPM.
This question belongs to: Computer Memory and Storage Devices
Question #66
Which system component acts as an intermediary buffer, allowing slow peripheral storage devices like hard drives to communicate efficiently with the CPU?
A. Disk Buffer / Cache Memory
B. Instruction Register
C. Accumulator
D. L1 Cache
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
Disk buffers built into drives act as localized memory arrays to cache data temporarily, preventing slow mechanical read speeds from bottlenecking system processes.
This question belongs to: Computer Memory and Storage Devices
Question #67
What is the data storage capacity limit of an older, standard single-density 5.25-inch floppy disk?
A. 720 KB
B. 360 KB
C. 1.44 MB
D. 2.88 MB
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Early double-sided single-density or double-density 5.25-inch floppy disks used on classic PC hardware typically maxed out around 360 KB of capacity.
This question belongs to: Computer Memory and Storage Devices
Question #68
Which architectural feature prevents a user from accidentally installing a DDR4 RAM module into a DDR5 motherboard slot?
A. A physically offset structural alignment notch
B. Color-coded connector pins
C. An automatic software warning beep
D. Magnetic resistance shields
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
Each generation of DDR memory features a physical alignment notch carved into a unique position along the pin edge to prevent incompatible physical installation.
This question belongs to: Computer Memory and Storage Devices
Question #69
In data storage terminology, what does the suffix '-RW' mean when added to a DVD media designation?
A. Run-Wave
B. Read-Wide
C. Random-Write
D. Rewritable
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
The '-RW' suffix identifies the optical media as 'Rewritable', meaning the stored data tracks can be erased and overwritten multiple times.
This question belongs to: Computer Memory and Storage Devices
Question #70
What is the main benefit of upgrading a laptop's storage from an older mechanical HDD to an NVMe SSD?
A. An expansion of the physical size of the display panel.
B. Vastly superior data read/write speeds and faster system boot times.
C. Substantially lower financial acquisition costs.
D. Complete immunity to all software-based computer viruses.
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
NVMe SSDs operate over high-bandwidth PCIe pathways without mechanical latencies, resulting in faster data transfers, file loads, and system boots.
This question belongs to: Computer Memory and Storage Devices
Question #71
Which mathematical base forms the underlying structural logic of standard computer memory capacity measurements?
A. Base 2 (Binary)
B. Base 10 (Decimal)
C. Base 16 (Hexadecimal)
D. Base 8 (Octal)
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
Computer systems process binary logic states (0 and 1). Thus, memory capacities naturally scale using powers of 2 (e.g., 2, 4, 8, 16, 32, 64).
This question belongs to: Computer Memory and Storage Devices
Question #72
What type of flash memory chip structure stacks memory cells vertically to achieve much higher storage capacities within the same physical footprint?
A. Planar NAND
B. NOR Flash
C. 3D NAND
D. SRAM Array
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
3D NAND technology stacks flash memory cells vertically in multiple layers, allowing manufacturers to achieve massive storage densities on a single silicon die.
This question belongs to: Computer Memory and Storage Devices
Question #73
Which program is systematically executed from ROM the instant a standard personal computer is turned on?
A. Microsoft Word
B. The Windows Task Manager
C. POST (Power-On Self-Test)
D. Disk Defragmenter
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
The POST (Power-On Self-Test) routine is hardcoded into the system BIOS/UEFI ROM and runs instantly at startup to verify that essential hardware components are operational.
This question belongs to: Computer Memory and Storage Devices
Question #74
What is the relationship between access speed and storage capacity across the standard computer memory hierarchy?
A. Access speed and capacity are completely identical metrics across all levels.
B. As storage capacity increases, the relative access speed generally decreases.
C. Lower capacity devices always exhibit the slowest access times.
D. Devices with larger capacities always feature the fastest access speeds.
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
In the memory hierarchy, the fastest options (registers, cache) are small and expensive, while large capacity options (HDDs, SSDs) are farther from the CPU and have slower access speeds.
This question belongs to: Computer Memory and Storage Devices
Question #75
Which of the following describes an optical storage medium that features pre-recorded data that can never be modified or erased by the user?
A. CD-RW
B. CD-R
C. CD-ROM
D. DVD+RW
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
A CD-ROM (Read-Only Memory) is manufactured with pre-stamped physical pits, meaning the stored information is immutable and cannot be rewritten.
This question belongs to: Computer Memory and Storage Devices
Question #76
Which memory type serves as the fast, specialized storage space for storing translation mappings between virtual and physical memory addresses?
A. Virtual Page File
B. Hard Disk MBR
C. Translation Lookaside Buffer (TLB)
D. EPROM
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
The TLB is a dedicated hardware memory cache within the CPU's memory management unit (MMU) that speeds up virtual-to-physical address translations.
This question belongs to: Computer Memory and Storage Devices
Question #77
What metric represents the total data volume that can be written to a solid state drive before its flash cells degrade permanently?
A. Bus Width
B. CAS Latency
C. RPM
D. TBW (Terabytes Written)
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
TBW (Terabytes Written) is an endurance metric that specifies the total cumulative amount of data an SSD can safely write before flash memory cell degradation risk increases.
This question belongs to: Computer Memory and Storage Devices
Question #78
Which architectural component generates the addresses required to fetch instructions from physical memory locations?
A. The Hard Drive Actuator
B. The Data Bus
C. The Program Counter (PC)
D. The Optical Laser Assembly
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
The Program Counter is a specialized processor register that holds the memory address of the next sequential instruction slated for execution.
This question belongs to: Computer Memory and Storage Devices
Question #79
What is the function of 'Wear Leveling' algorithms implemented inside Solid State Drives?
A. To accelerate the rotational velocity of the external data interfaces.
B. To delete old software files automatically when space drops below ten percent.
C. To equalize the weight distribution of the internal electronic boards.
D. To distribute write operations evenly across flash blocks to prevent premature cell failure.
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
Because flash memory blocks endure a finite number of write cycles, wear leveling algorithms distribute writes evenly across the physical medium to extend the drive's operational lifespan.
This question belongs to: Computer Memory and Storage Devices
Question #80
Which unit of storage represents exactly 1024 Zettabytes?
A. 1 Exabyte
B. 1 Megabyte
C. 1 Yottabyte
D. 1 Petabyte
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
The progression of large-scale data storage units dictates that 1024 Zettabytes (ZB) equals precisely 1 Yottabyte (YB).
This question belongs to: Computer Memory and Storage Devices

More Computer Topics

Computer Abbreviations MCQs
Computer Fundamentals MCQs
Computer Hardware MCQs
Computer Networking MCQs
Computer Software MCQs
CPU (Central Processing Unit) MCQs
Cyber Security MCQs
Database Management System (DBMS) MCQs
Internet and Web Technologies MCQs
Microsoft Office MCQs
Operating Systems MCQs
Programming Languages MCQs
Today's Top Topics
Cyber Security 269 Computer Abbreviations 369 Computer Hardware 430 Memory and Storage Devices 438 Programming Languages 0
Explore Subjects
Accountancy and Statistics 3179 Reasoning 2064 Maths 5575 Science 4430 Economy GK 2220
Practice Mix
Who was the first person to formulate the principle of buoyancy?
In persistent system motherboard layouts, what does the primary acronym ROM mean?
NABARD was established in 1982 based on the recommendations of:
He is _______ wonderful that he raised five children alone.
What does 'MIPS' stand for?