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

A technician replaces a bad 250GB HD with a 2TB. After install, the PC detects the 2TB HD as 250GB HD what should he do?

  1. Reinstall the drive

  2. Patch the OS

  3. Upgrade the driver

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

When a system fails to recognize the full capacity of a newly installed large hard drive, it is often due to outdated motherboard firmware. Flashing the BIOS updates the system's low-level hardware support, allowing it to correctly address and recognize larger storage capacities.

Multiple choice

Video editing needs the fastest Hard Drive access times with large storage. Which would be MOST ideal for the computer?

  1. Two 500 GB SATAZ hard drives used in a JBOD array

  2. Two 500 GB SATAZ hard drives in a hardware RAID 0

  3. Two 500 GB SATAZ hard drives in a hardware RAID 1

  4. Two 500 GB SATAZ hard drives in a software RAID 0
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

RAID 0 stripes data across multiple drives, providing the fastest read and write speeds, which is ideal for demanding tasks like video editing. Hardware-based RAID is superior to software-based RAID because it offloads the processing overhead from the CPU to a dedicated RAID controller.

Multiple choice

If you switch a computer off and on what disappears

  1. The RAM

  2. The ROM

  3. All information
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

RAM is volatile memory, meaning it requires electrical power to maintain its data. When you turn a computer off, everything stored in the RAM is lost, while data in non-volatile memory like ROM remains intact.

Multiple choice

What does rom stand for

  1. Read only memory

  2. reminder over memory

  3. Resting on memes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

ROM stands for Read-Only Memory, which is non-volatile storage used to store the computer's startup instructions (BIOS). Unlike RAM, the data stored in ROM cannot be easily modified or written to. The other options are simply made-up phrases.

Multiple choice

What is the RAM

  1. Random access memory

  2. reality access memory

  3. The same as whatever ROM is
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

RAM stands for Random Access Memory, which serves as the computer's primary volatile workspace. It temporarily holds data and programs currently in use by the CPU so they can be accessed quickly. Unlike ROM, RAM is volatile and loses its contents when the computer is powered off.

Multiple choice

Operating systems function in which memory area(s) (best answer)?

  1. Kernel space and Hyperspace

  2. User space

  3. User space and Kernel space

  4. Kernel space and cyberspace
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Operating systems manage resources and enforce security by separating memory into User space (for applications) and Kernel space (for core OS functions).

Multiple choice

What is Flash Memory?

  1. Non-volatile memory that retains data without power

  2. Volatile memory that loses information without power

  3. Temporary memory used to store things for quick access

  4. Long Term Memory to store permanent data and can't be edited
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Flash memory is a type of non-volatile storage that can be electrically erased and reprogrammed, meaning it retains data even when the power is turned off.

Multiple choice

What is the full form of RAM?

  1. Random Access Memory

  2. Readable American Memory

  3. Remote Access Memory

  4. Random Active Memory

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

RAM stands for Random Access Memory, which is the primary volatile memory used by a computer to store data currently in use.

Multiple choice

Identify?

  1. External Hard disk

  2. Data Backup

  3. SDD

  4. Optical drive
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice

Hard disk drive is?

  1. Secondary

  2. Primary

  3. Offline

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A hard disk drive is a non-volatile storage device used for long-term data retention. It is classified as secondary storage because it is not directly accessible by the CPU like primary memory.

Multiple choice

Off-line storage includes

  1. CD/DVD/DVD-RAM

  2. Blu-ray disks

  3. USB flash memory/memory sticks/SD-XD cards

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

Offline storage refers to any storage medium that can be physically removed from the computer. CDs, DVDs, Blu-ray disks, and USB flash drives all fit this definition.