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

Auxiliary memory is also called as __________.

  1. cache memory

  2. main memory

  3. secondary storage

  4. vacant memory

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

Yes,  secondary storage is called as auxiliary storage.  It is also called as mass storage device.

Multiple choice

______________ group of instructions provide 8085 with the ability to move data around inside the RAM, between the RAM and the register of the microprocessor and between registers within the microprocessor.

  1. Machine control group

  2. Branch group

  3. Logical group

  4. Data transfer group

  5. Arithmetic group
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This group provides the 8085 with mathematical ability to manipulate 8-bit data and by judicious use of the condition codes manipulate larger values. Data transfer group of instructions provide 8085 with the ability to move data around inside the RAM, between the RAM and the register of the microprocessor and between registers within the microprocessor.

Multiple choice

Where are micro programmes stored?

  1. Main memory

  2. Secondary memory

  3. Cache memory

  4. Read only storage memory

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

Micro program executes the OPCODE. These programmes are available in ROS of the processor.

Multiple choice

Micro programmes are executed to execute_____________

  1. user programme in the main memory

  2. instruction (OPCODE) in processor

  3. instruction (OPRAND) in processor

  4. program in the main memory

  5. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Micro programs are written to produce relevant digital signals of the given OPCODE. Hence, option (2) is correct.

Multiple choice

Overlay concept is used to execute programmes whose size is ________________.

  1. larger than main memory

  2. same as main memory

  3. shorter than main memory

  4. overlay has nothing to do with memory

  5. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Overlay concept uses the free blocks of the main memory during run time to execute some portion of a program. So, when a larger size program is required to be executed, it is first fragmented in smaller continuous programmes, and those programmes are loaded and removed in/from memory as and when required.

Multiple choice

Cache memories are made of _____________

  1. MOS Device

  2. TTL Device

  3. ECL Device

  4. C-MOS Device

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

ECL can be easily implemented to have high speed memory chip. Because of its speed, it is favourable for implementing cache memory. 

Multiple choice

Architecture of microprocessor differs from microcontroller since

  1. 8255 is not used by microcontroller, but microprocessor uses it

  2. extended RAM & ROM memory are not used in microcontroller but used in microprocessor

  3. RISC can be implemented in microprocessor, but not in microcontroller

  4. microprocessor has internal flash memory, but microcontroller does not

  5. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

For parallel I/O operation, microprocessor uses a programmable peripheral interface (PPI) IC as controller/interface device for parallel I/O while this is internally implemented in microcontroller. So, microcontroller does not require 8255. 

Multiple choice

Main memory gets tristate nature when tristate buffers are connected to the device

  1. both at input and output

  2. only at input

  3. only at output

  4. only at address port

  5. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Memory chip accepts the data bit at the input and loads it in by WR, and outputs data bit at output by RD. So, both output and input remain connected to the bus where tristate nature is required. So, these buffers are required at both input and output. 

Multiple choice

Main memory is constructed using

  1. MOS

  2. TTL

  3. ECL

  4. JFET

  5. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Due to its high density, low power requirement and generally acceptable speed, MOS memories are most popularly used memories.