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

What is the maximum amount of data that can be transferred to or from Cloud Storage in a single day?

  1. 10 TB

  2. 100 TB

  3. 1 PB

  4. 10 PB
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The maximum amount of data that can be transferred to or from Cloud Storage in a single day is 10 PB.

Multiple choice

What is the maximum amount of time that an object can be stored in Cloud Storage?

  1. 1 year

  2. 5 years

  3. 10 years

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

Objects can be stored in Cloud Storage for as long as you want.

Multiple choice

What is the cost of storing data in Cloud Storage?

  1. $0.02 per GB per month
  2. $0.05 per GB per month
  3. $0.10 per GB per month
  4. $0.20 per GB per month
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The cost of storing data in Cloud Storage is $0.02 per GB per month.

Multiple choice

What is the cost of transferring data to or from Cloud Storage?

  1. $0.01 per GB
  2. $0.02 per GB
  3. $0.05 per GB
  4. $0.10 per GB
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The cost of transferring data to or from Cloud Storage is $0.01 per GB.

Multiple choice

Which of the following is a common type of GPU memory used for storing textures and framebuffers?

  1. GDDR5

  2. GDDR6

  3. HBM2

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

GDDR5, GDDR6, and HBM2 are all types of high-speed graphics memory commonly used in GPUs. They offer fast data transfer rates and low latency, making them suitable for storing textures, framebuffers, and other graphics data.

Multiple choice

What is the primary storage medium used in optical storage technology?

  1. Magnetic tape

  2. Hard disk drive

  3. Optical disc

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

Optical storage technology utilizes optical discs as the primary storage medium, which are typically made of polycarbonate plastic and coated with a reflective layer.

Multiple choice

Which type of laser is commonly employed in optical storage devices?

  1. Carbon dioxide laser

  2. Helium-neon laser

  3. Argon-ion laser

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

Diode lasers are widely used in optical storage devices due to their compact size, low cost, and high efficiency. They emit a focused beam of light that is used to read and write data on optical discs.

Multiple choice

What is the fundamental principle behind optical storage technology?

  1. Magnetic recording

  2. Electrical charge storage

  3. Light reflection and refraction

  4. Mechanical deformation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Optical storage technology relies on the principles of light reflection and refraction to store and retrieve data. Data is encoded as patterns of pits and lands on the optical disc, which affect the way light is reflected and refracted, allowing for the storage and retrieval of information.

Multiple choice

Which of the following is an example of a write-once optical disc format?

  1. CD-ROM

  2. DVD-RW

  3. Blu-ray R

  4. CD-R
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

CD-R (Compact Disc Recordable) is a write-once optical disc format that allows users to record data onto a blank disc. Once data is written to a CD-R, it cannot be erased or overwritten.

Multiple choice

Which optical storage format succeeded the CD-ROM and offered increased storage capacity?

  1. DVD-ROM

  2. Blu-ray ROM

  3. HD DVD-ROM

  4. CD-RW
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

DVD-ROM (Digital Versatile Disc Read-Only Memory) succeeded the CD-ROM format and provided significantly higher storage capacity. DVD-ROM discs can store up to 4.7 gigabytes of data, compared to the 650 megabytes offered by CD-ROMs.

Multiple choice

What is the maximum storage capacity of a single-layer Blu-ray disc?

  1. 25 gigabytes

  2. 50 gigabytes

  3. 100 gigabytes

  4. 200 gigabytes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A single-layer Blu-ray disc has a maximum storage capacity of 25 gigabytes. Dual-layer Blu-ray discs can store up to 50 gigabytes, while quad-layer Blu-ray discs can store up to 100 gigabytes.

Multiple choice

Which optical storage format is primarily used for storing high-definition video content?

  1. CD-ROM

  2. DVD-ROM

  3. Blu-ray ROM

  4. HD DVD-ROM
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Blu-ray ROM (Blu-ray Read-Only Memory) is primarily used for storing high-definition video content due to its high storage capacity and support for advanced video codecs. Blu-ray discs can store up to 50 gigabytes of data, allowing for the storage of full-length high-definition movies and other multimedia content.

Multiple choice

Which optical storage format is designed specifically for storing large amounts of data, such as backups and archives?

  1. CD-ROM

  2. DVD-ROM

  3. Blu-ray ROM

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

LTO (Linear Tape-Open) is an optical storage format specifically designed for storing large amounts of data, such as backups and archives. LTO tapes can store several terabytes of data and are commonly used in data centers and enterprise environments for long-term data storage and archival purposes.

Multiple choice

What is the primary disadvantage of optical storage technology compared to solid-state storage?

  1. Lower storage capacity

  2. Slower data transfer rates

  3. Shorter lifespan

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

Optical storage technology has several disadvantages compared to solid-state storage, including lower storage capacity, slower data transfer rates, and a shorter lifespan. Optical discs have limited storage capacity compared to solid-state drives (SSDs), and they also offer slower data transfer rates, resulting in longer loading times and slower file transfers. Additionally, optical discs have a shorter lifespan than SSDs and are more susceptible to damage from scratches and other physical factors.

Multiple choice

Which optical storage format is commonly used for storing video games and software applications?

  1. CD-ROM

  2. DVD-ROM

  3. Blu-ray ROM

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

CD-ROM, DVD-ROM, and Blu-ray ROM are all commonly used for storing video games and software applications. CD-ROMs were widely used in the past for storing games and software, while DVDs and Blu-rays have become more popular in recent years due to their higher storage capacities. Both DVDs and Blu-rays can store large amounts of data, making them suitable for storing complex video games and software applications.