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 storage medium is generally considered the most reliable for long-term preservation of digital photographs?

  1. Hard disk drives

  2. Solid-state drives

  3. Optical discs (e.g., CDs, DVDs, Blu-ray discs)

  4. Magnetic tape
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Optical discs, such as CDs, DVDs, and Blu-ray discs, are generally considered more reliable for long-term preservation of digital photographs compared to hard disk drives, solid-state drives, and magnetic tape. They are less susceptible to data corruption and degradation over time, and they can be easily stored and transported.

Multiple choice

Which of the following is NOT a type of memory?

  1. Short-term memory

  2. Long-term memory

  3. Working memory

  4. Episodic memory
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Episodic memory is a type of long-term memory that stores information about specific events and experiences. It is not a type of memory.

Multiple choice

Which of the following is NOT a common cause of mobile device performance issues?

  1. Insufficient storage space

  2. Outdated software

  3. Overheating

  4. Physical damage
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Physical damage is not a common cause of mobile device performance issues. Insufficient storage space, outdated software, and overheating are more common causes.

Multiple choice

Which of the following is NOT a common cause of mobile device performance issues?

  1. Insufficient storage space

  2. Outdated software

  3. Overheating

  4. Physical damage
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Physical damage is not a common cause of mobile device performance issues. Insufficient storage space, outdated software, and overheating are more common causes.

Multiple choice

What is the most common type of memory used in digital computers?

  1. RAM

  2. ROM

  3. EEPROM

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

RAM (Random Access Memory) is the most common type of memory used in digital computers. RAM is a volatile memory, which means that it loses its data when the power is turned off. RAM is used to store data that is being processed by the computer. ROM (Read-Only Memory) is a non-volatile memory, which means that it retains its data even when the power is turned off. ROM is used to store data that does not change, such as the computer's operating system.

Multiple choice

Which of these is NOT a common type of mobile device storage?

  1. Internal storage

  2. Removable storage

  3. Cloud storage

  4. Solid-state drive
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Solid-state drives are not a common type of mobile device storage, as they are more expensive and less durable than other types of storage.

Multiple choice

What is the maximum storage capacity for music on the latest Apple Watch?

  1. 8GB

  2. 16GB

  3. 32GB

  4. 64GB
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The latest Apple Watch offers 32GB of storage capacity for music.

Multiple choice

What is the process of retrieving information from memory called?

  1. Recall

  2. Recognition

  3. Relearning

  4. Encoding

  5. Storage
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Recall is the process of retrieving information from memory.

Multiple choice

What is the process of maintaining information in memory over time called?

  1. Recall

  2. Recognition

  3. Relearning

  4. Encoding

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

Storage is the process of maintaining information in memory over time.

Multiple choice

What is the purpose of an instruction register in a microprocessor?

  1. Storing the current instruction being executed

  2. Holding the result of an arithmetic or logical operation

  3. Fetching the next instruction from memory

  4. Translating high-level language instructions into machine code
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The instruction register temporarily stores the instruction that is currently being executed by the microprocessor.

Multiple choice

Which addressing mode allows a program to access data at a specific memory location?

  1. Immediate addressing

  2. Direct addressing

  3. Indirect addressing

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

Direct addressing mode specifies the memory address of the operand directly in the instruction.

Multiple choice

What is the role of a program counter in a microprocessor?

  1. Storing the address of the next instruction to be executed

  2. Holding the result of a comparison operation

  3. Fetching data from memory

  4. Performing arithmetic calculations
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The program counter holds the address of the next instruction to be executed by the microprocessor.

Multiple choice

Which of the following is a common type of memory used in embedded systems?

  1. Dynamic random-access memory (DRAM)

  2. Static random-access memory (SRAM)

  3. Read-only memory (ROM)

  4. Flash memory
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Flash memory is a non-volatile memory that can be erased and reprogrammed, making it suitable for embedded systems where data needs to be stored permanently.

Multiple choice

What is the function of a stack in a microprocessor system?

  1. Storing temporary data during program execution

  2. Holding the return addresses for subroutine calls

  3. Managing the flow of data between registers and memory

  4. Performing arithmetic and logical operations
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The stack is a memory area used to store temporary data during program execution, such as function arguments, local variables, and return addresses.

Multiple choice

Which of the following is NOT a common type of mobile device storage?

  1. Internal storage

  2. External storage

  3. Cloud storage

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

Optical storage is not common in mobile devices.