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 modes results in three byte instruction, and first byte contains the instruction itself and second and third byte contain the data, either as a single 8 bit value or 16 bit value in 8085 processor?

  1. Direct Addressing Mode

  2. Register Indirect Branch Addressing Mode

  3. Register Relative Addressing Mode

  4. Relative Based Indexed Addressing Mode

  5. Immediate Mode
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

It results in two or three bytes instruction in which first byte contains the instruction itself and the second and third bytes contain the data, either as a single 8 bit value or a 16 bit value in 8085 processor.

Multiple choice

Which of the following is an incorrect option about runtime storage organization?

  1. In storage organization, compiler demands for a block of memory to operating system. The compiler utilizes this block of memory executing the compiled program. This block of memory is called runtime storage.

  2. Runtime storage is divided into parts to hold data and code.

  3. The amount of memory required by data objects is known at the time and hence, data objects also can be placed at the statically determined area of memory.

  4. The size of generated code is dynamic.

  5. In runtime storage, stack is used to manage the active procedure.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The size of generated code is fixed. Hence, target code occupies the determined area of memory. Hence, it is an incorrect statement.

Multiple choice

Which of the following causes internal fragmentation?

  1. Static allocation of memory

  2. Dynamic allocation of memory

  3. Both static and dynamic allocation of memory

  4. None of the above

  5. Sometimes static and some times dyanimic memory
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When partition is static memory is wasted in each partition where an object of smaller size than the partition itself is loaded and is known as internal fragmentation.

Multiple choice

The process where data is written on two or more hard disks simultaneously over different channels is called

  1. disk mirroring

  2. disk duplexing

  3. disk maneuvering

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

Disk duplexing is a variation of disk mirroring in which each of multiple storage disks has its own SCSI controller. Disk mirroring (also known as RAID-1) is the practice of duplicating data in separate volumes on two hard disks to make storage more fault-tolerant.

Multiple choice

The _______ level of RAID is a block interleaved parity organization that uses block level striping and in addition keeps a parity block on a separate disk for corresponding blocks from N other disks.

  1. RAID level 1

  2. RAID level 2

  3. RAID level 3

  4. RAID level 4

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

This level of RAID is a block interleaved parity organization that uses block level striping and in addition keeps a parity block on a separate disk for corresponding blocks from N other disks.