Information Units and Prefixes Flashcards

1️⃣ Familiarise yourself with the flashcards:

  • Look through all the flashcards to see what's on both sides.
  • Make sure you understand the information on each card. If something's unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

  • Look at the question or prompt on each card and try to remember the answer before flipping it over.
  • Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

  • Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
  • Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

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What is a bit?

The smallest unit of data. It can be 0 or 1.

How many bits are in one byte?

8 bits.

What is a nibble?

4 bits (half a byte).

In data units, what do the letters b and B stand for?

b means bit. B means byte.

How many bytes are in 1 kilobyte (KB) using decimal prefixes?

1000 bytes.

How many kilobytes are in 1 megabyte (MB) using decimal prefixes?

1000 KB.

How many bytes are in 1 kibibyte (KiB) using binary prefixes?

1024 bytes.

How many kibibytes are in 1 mebibyte (MiB)?

1024 KiB.

How many megabytes are in 1 gigabyte (GB) using decimal prefixes?

1000 MB.

Convert 2 MB to KB (decimal).

2000 KB (2 x 1000).

What unit is often used for network speed, and how do you change it to MB/s?

Megabits per second (Mb/s). To get MB/s, divide by 8.

Why can a 500 GB drive appear smaller on a computer?

Packaging uses decimal GB. The computer may show binary GiB, so the number looks smaller.