Computer Knowledge

Computer Memory and Storage

2,121 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

The time taken for the read/write head to move to the correct track on the magnetic disk is called

  1. Epoch delay

  2. Latency Delay

  3. Seek time

  4. Approach time
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Seek time is the correct term for the time required for the read/write head to move across the disk surface and position itself over the correct track. This is different from rotational latency (waiting for the desired sector to rotate under the head) or total access time (seek time + latency).

Multiple choice

The storage within the addressing scheme of the computer but exceeding the physical capacity is called

  1. Address space

  2. Overlay storage

  3. Secondary storage

  4. Scratched memory
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Address space refers to the total range of memory addresses that a CPU can generate based on its address bus width (for example, a 32-bit CPU can address 2^32 = 4GB). This 'virtual' address space can exceed the actual physical RAM installed through techniques like paging and virtual memory, allowing more addressable memory than physically exists.

Multiple choice

Which of the following has a design similar to that of a hard drive, operates on the principle of magnetic recording and uses magnetic heads for data storage and retrieval from the rotating magnetic media?

  1. Tape drive

  2. Optical storage

  3. Flip flop storage

  4. Floppy drive

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The design of a floppy disk is similar to that of a hard drive. It operates on the principle of magnetic recording and uses magnetic heads for data storage and retrieval from the rotating magnetic media.