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

The contents of information are stored in

  1. memory data register

  2. memory address register

  3. memory access register

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

The Memory Data Register (MDR) holds the actual data being transferred to or from memory. When data is read from memory, it goes into the MDR. When data is written to memory, it is first placed in the MDR. The Memory Address Register (MAR) holds the address of the memory location, not the data. 'Memory access register' and 'memory arithmetic register' are not standard architectural components.

Multiple choice

In which of the following storage devices recording is done by burning tiny pits on a circular disk?

  1. Punched card

  2. Floppy disk

  3. Magnetic tape

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

Optical disks (CDs, DVDs) store data by burning microscopic pits onto a circular disk using laser technology. This is fundamentally different from magnetic storage (floppy disks, tapes) or punch cards. Option D correctly identifies optical disks as using this pit-burning method.

Multiple choice

A peripheral output device that stores large amount of information up to 650 MB is

  1. a hard disk

  2. a floppy drive

  3. a CD ROM

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A CD-ROM is a peripheral output device that can store up to 650 MB of data. While hard disks store much more data, CD-ROMs were specifically known for this 650 MB storage capacity in their standard format. Floppy drives store much less (typically 1.44 MB), and hard disks are storage devices but are internal or external drives that store much more than 650 MB, making CD-ROM the best answer for this specific capacity specification.

Multiple choice

In which of the following modes, the effective branch address is the contents of a register or memory location that is accessed by any data related addressing modes except the immediate mode in 8086 processor?

  1. Immediate Addressing Mode

  2. Direct Addressing Mode

  3. Intrasegment Indirect Addressing Mode

  4. Register Indirect Mode

  5. Instruction
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The effective branch address is the contents of a register or memory location that is accessed using any data related addressing modes except the immediate mode.

Multiple choice

Which of the following replaces the contents of IP and CS with the contents of two consecutive words in memory that are referenced using any data related addressing modes, except the immediate and register modes in 8086 processor?

  1. Immediate Addressing Mode

  2. Register Addressing Mode

  3. Direct Mode

  4. Operand

  5. Intersegment Indirect Addressing Mode
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

It replaces the contents of IP and CS with the contents of two consecutive words in memory that are referenced using any data related modes except the immediate and register modes in 8086 processor.

Multiple choice

In which of the following, the effective address is the sum of an 8 or 16 bit displacement and the contents of a base register or an index register in 8086 processor?

  1. Register Addressing Mode

  2. Register Relative Addressing Mode

  3. Based Index Addressing Mode

  4. Immediate Addressing Mode

  5. Operand
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The effective address is the sum of an 8 or 16 bit displacement and the contents of a base register or an index register in 8086 processor.

Multiple choice

In which addressing mode, the effective address of the datum is in the base register or an index register that is specified by the instruction in 8086 processor?

  1. Register Addressing Mode

  2. Direct Addressing Mode

  3. Register Indirect Addressing Mode

  4. Instruction Register

  5. Register Selector
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The effective address of the datum is in the base register or an index register that is specified by the instruction in 8086 processor.