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

Consider a situation in which the disk read/write head is currently located at track 15 (of tracks 0-50) and moving in the positive direction. Assume that the following track requests have been made in this order: 5, 45, 30, 10, 25, 35, 42, 21. What is the order in which optimised C-SCAN would service these requests and what is the total seek distance?

  1. 95

  2. 100

  3. 91

  4. 90

  5. 105
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total seek distance = (21- 5) + (25 - 21) + (30 - 25)+(35 - 30) + (42 - 35) + (45 - 42) + (45 - 50) + (50 - 0) + (5 - 0) + (10 - 5) = 95

Multiple choice

The storage can be classified as _____________

  1. volatile storage

  2. non-volatile storage

  3. stable storage

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Storage systems are generally categorized by their persistence, including volatile (RAM), non-volatile (HDD/SSD), and stable storage (redundant systems), making all of these valid classifications.

Multiple choice

WORM stands for

  1. Write Once Read Many

  2. Write Over Real Memory

  3. Write Only Real Memory

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

WORM is a data storage technology that allows data to be written to a storage medium a single time and prevents the drive from erasing the data.

Multiple choice

CD-ROM means

  1. Compact disk - Read Only Measures

  2. Compact disk- Read Only Matter

  3. "Compact Disk" Read Only Meaning

  4. Compact Disk Read Only Memory
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

CD-ROM stands for Compact Disc Read-Only Memory. It is a type of optical disc that contains data that can be read by a computer but cannot be modified or erased.

Multiple choice

Registers are used for ______ data.

  1. inputting

  2. outputting

  3. processing

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

Registers are small, high-speed storage locations within the CPU used to hold data temporarily during processing.

Multiple choice

Magnetic disk is a ______ device

  1. input

  2. output

  3. control

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

Magnetic disks, such as hard drives, are used for long-term data retention, classifying them as storage devices.