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 instruction will add the specified byte, either in a register or in the address contained by the H & L registers, and the value of the Carry bit into the accumulator?

  1. ADD instruction

  2. ADD with Carry

  3. ADD immediate

  4. LXI instruction
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

ADD with carry instruction will add the specified byte, either in a register or in the address contained by the H & L registers, and the value of the Carry bit, into the accumulator.

Multiple choice

___________, the effective branch having content of register or memory location is accessed by using any of the data related addressing modes expect the immediate mode.

  1. Intrasegment indirect

  2. Intrasegment direct

  3. Intersegment direct

  4. Intersegment indirect
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Intrasegment indirect, the effective branch having the content of register or memory location is accessed by using any of the data related addressing modes expect the immediate mode.

Multiple choice

Which computer memory is essentially empty?

  1. RAM

  2. ROM

  3. EPROM

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

ROM (Read-Only Memory) is 'essentially empty' in the sense that it contains no user-writable or changeable content - it's pre-programmed during manufacturing and cannot be modified by normal use. RAM can be written to, EPROM can be erased and reprogrammed, PROM can be programmed once. Only ROM is permanently fixed.

Multiple choice

Access method used for cassette tape is

  1. direct

  2. random

  3. sequential

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

Cassette tapes use sequential access because data must be read in the order it was written - you must fast-forward or rewind to reach specific locations. Unlike disks, you cannot jump directly to any point on the tape.

Multiple choice

Which memory is volatile?

  1. RAM

  2. ROM

  3. EPROM

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

RAM is volatile memory that loses its contents when power is turned off. ROM, EPROM, and PROM are all non-volatile storage types that retain data even without power.

Multiple choice

The biggest precaution to be observed in use of disk is first

  1. avoidance of dust

  2. avoiding sun light

  3. work is AC room

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

Disk drives require protection from dust (can cause head crashes), sunlight (heat damage), and temperature extremes (AC rooms maintain optimal operating conditions). All precautions are equally important for disk longevity.

Multiple choice

Which is the computer memory which does not forget?

  1. ROM

  2. RAM

  3. EPROM

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

ROM (Read-Only Memory) is non-volatile and permanently stores data that cannot be modified under normal operation. RAM, EPROM, and EROM (though EROM is an unusual term) are either volatile or erasable.