Computer Knowledge

Computer Memory and Storage

2,477 Questions

Computer memory and storage questions test foundational knowledge of hardware, cache mapping, and data transfer mechanisms. Key areas include Direct Memory Access, analog recording, and RAID levels. This section is essential for candidates preparing for banking and government computer proficiency tests.

Cache memory mappingDirect memory accessRAID storage levelsHard disk technologyOptical media storageMemory addresses

Computer Memory and Storage Questions

Multiple choice

Which of the following is the largest manufacturer of hard disk drives?

  1. IBM

  2. Seagate

  3. Microsoft

  4. 3M
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Seagate has been one of the largest manufacturers of hard disk drives for decades. While the market has consolidated with companies like Western Digital and Toshiba, Seagate remains a major player in storage technology, producing HDDs for computers, servers, and data centers.

Multiple choice

The memory location address is limited to

  1. 00000 to 9ffff(16)

  2. 00001 to 9ffff(16)

  3. 00010 to 9ffff(16)

  4. 10000 to 9ffff(16)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The 20-bit address bus in IBM PC architecture allows addressing from 00000h to 9ffffh, covering 640KB of conventional memory. This is the standard memory addressing range for DOS-based systems.

Multiple choice

Memory is made up of

  1. set of wires

  2. set of circuits

  3. large number of cells

  4. all of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Computer memory is composed of millions of tiny memory cells, with each cell capable of storing one bit of information as either a 0 or 1. These cells are organized into larger units like bytes and words.

Multiple choice

Which of the following storage devices can store maximum amount of data?

  1. Floppy disk

  2. Hard disk

  3. Compact disk

  4. Magneto optic disk
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hard disks provide the highest storage capacity among these options. Modern hard disks can store terabytes of data, whereas floppy disks store only megabytes, CDs typically store 650-700MB, and magneto-optical disks offer limited capacity compared to hard drives.

Multiple choice

Which technology is used in compact disks?

  1. Mechanical

  2. Electrical

  3. Electro magnetic

  4. Laser
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Compact disks use laser technology to read data. The disk surface contains microscopic pits and lands that represent binary data, and a laser beam reflects off these patterns to read the information.

Multiple choice

Primary memory stores

  1. data only

  2. programs only

  3. results only

  4. all of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Primary memory (RAM) is the computer's main working memory and stores all types of active information: the programs currently running, their data, and intermediate results during processing. This is why it needs to be fast and directly accessible to the CPU.

Multiple choice

EPROM can be used for

  1. erasing the contents of ROM

  2. reconstructing the contents of ROM

  3. erasing and reconstructing the contents of ROM

  4. duplicating ROM
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Option (3) is correct.

Multiple choice

Information travels between components on the motherboard through

  1. flash memory

  2. CMOS

  3. bays

  4. buses

  5. peripherals
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Buses are the electrical pathways that enable data transfer between the CPU, memory, and other components on the motherboard. Flash memory is storage, CMOS is BIOS memory, bays house drives, and peripherals are external devices. Only buses serve as the communication highway within the motherboard itself.

Multiple choice

Magnetic tape is not practical for applications where data must be quickly recalled because tape is

  1. a random-access medium

  2. a sequential-access medium

  3. a read-only medium

  4. fragile and easily damaged

  5. an expensive storage medium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Magnetic tape is a sequential-access medium, meaning data must be read in order - to reach a specific point, you must fast-forward through all preceding data. This makes it impractical for applications requiring quick random access to specific data items. Random-access media (like disks) can directly access any location, while sequential nature is tape's fundamental limitation for quick data retrieval.

Multiple choice

Which of the following is/are the true statements?

  1. Cache memory is faster than main memory.

  2. Cache memory stores data for temporary use.

  3. Cache memory consumes less access time as compared to main memory.

  4. All of the above

  5. Only (1) and (3) are true
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of the are true statement about Cache memory.