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

Which of the following is the role of Memory Data Register (MDR)?

  1. It is used to store the memory address from which data will be fetched to the CPU.

  2. It is used to store the memory address to which the data will sent and stored.

  3. It is used to hold the memory data for the data bus.

  4. It is used to store the data in main memory.

  5. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is true about Memory Data Register.

Multiple choice

In which of the following addressing modes, the register pair contains the high order byte of the address in the first and the low order byte of the address in the second in 8085 processor?

  1. Direct Branch Addressing Mode

  2. Register Indirect Branch Addressing Mode

  3. Register Addressing Mode

  4. Zero Flag

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

Here, the register pair contains the high order byte of the address in the first and the low order byte of the address in the second in 8085 processor.

Multiple choice

In which of the following modes, the instruction indirectly specifies the address of the data by referring to a register pair for the absolute address in 8085 processor?

  1. Register Indirect Addressing Mode

  2. Intersegment Indirect Addressing Mode

  3. Intrasegment Indirect Addressing Mode

  4. Register Addressing Mode

  5. Direct Branch Addressing Mode
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Here, the instruction indirectly specifies the address of the data by referring to a register pair for the absolute address in 8085 processor.

Multiple choice

Stack pointer is provided in a microprocessor to

  1. hold the return address of a function call

  2. hold the calling address of a function call

  3. hold the address of the data area of the main program

  4. provide the next address of program execution

  5. It is not required at all.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

After completing the function call, the processor returns back to calling program using the address in the stack pointer.

Multiple choice

The _________ stored on a ROM chip is responsible for loading the operating system from its permanent location on the hard drive into RAM.

  1. BIOS

  2. API

  3. device driver

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

BIOS (Basic Input/Output System) is firmware stored on a ROM chip that initializes hardware components during startup and loads the operating system bootloader from the hard drive into RAM. This bootstrap process is essential for getting the computer running.

Multiple choice

Which of the following statements is false regarding virtual memory?

  1. Any amount of RAM can be allocated to virtual memory.

  2. The setting for the amount of hard drive space to be allocated to virtual memory can be manually changed.

  3. Virtual memory is also called the swap file (or page file).

  4. Virtual memory is the physical space on the hard drive.

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

Option (1) is correct.