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 correct difference between static RAM and dynamic RAM?

  1. Static RAM is static in nature whereas dynamic RAM is dynamic in nature.

  2. Static RAM is slow whereas dynamic RAM is fast in operation.

  3. Static RAM retains stored information as long as the power supply is on whereas dynamic RAM loses its stored information in a very short time even though the power supply is on and requires to be refreshed periodically.

  4. Static RAM stores less information whereas dynamic RAM stores more information.

  5. Static RAM is straight in nature whereas dynamic RAM is random in storage.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct difference between static RAM and dynamic RAM.

Multiple choice

CD-ROM stands for

  1. combined disk read only memory

  2. comparative disk read only memory

  3. compact disk read on memory

  4. compact disk read only memory
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

CD-ROM stands for Compact Disk Read Only Memory, a type of optical disc containing pre-recorded data that can be read but not modified. Option D correctly identifies this standard storage technology terminology used in computing.

Multiple choice

Which of the following represents the volatile memory in a computer?

  1. ROM

  2. RAM

  3. Processor

  4. Hard disk

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

Volatile memory or volatile storage is a Computer Memory that requires power to maintain the stored information. It retains its contents while powered, but when power is interrupted stored data is immediately lost.The data held in RAM is temporary that is lost when the power is switched off, hence RAM is a volatile memory

Multiple choice

CD ROMs are

  1. Primary storage devices

  2. Optical storage devices

  3. Magnetic storage devices

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice

Floppy disks are

  1. Random access memories

  2. Storage devices

  3. Used for transferring data

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Floppy disks are random-access storage devices that allow direct access to any sector without reading sequentially. They serve as portable storage media and were historically widely used for transferring data between computers. Unlike sequential tape storage, floppies support random access patterns.

Multiple choice

Which of the following is true?

  1. If while executing a program the power goes off all the instructions and data in the memory will be lost

  2. A PC/XT uses a 80186 microprocessor whereas a PC/AT uses a 80286 microprocessor

  3. Both

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

RAM is volatile memory, meaning it requires constant electrical power to maintain stored data. When power fails, all data in RAM is lost permanently. Option B is incorrect because PC/XT used the 8088 processor, not 80186.

Multiple choice

Which of the following instructions provides a means of moving a byte between the accumulator and a memory location indirectly, with the RAM address contained in either the BC or DE register pair?

  1. LDA & STA

  2. LHLD & AHLD

  3. LDAX & STAX

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

The Load Accumulator Indirect (LDAX) and Store Accumulator Indirect (STAX) instructions provide a means of moving data between the accumulator and a memory location indirectly, with the RAM address contained in either the BC or DE register pair.