Binary and Data questions

By Interwoven Maths

Binary and Data question collection

Review Binary and Data questions for Computer Science, with correct answers shown and coverage across defining the smallest unit of data; explaining how many bits are in one byte; explaining how many bits are in one nibble.

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Question 1

What is the smallest unit of data?
  1. Bit
  2. Byte
  3. Nibble
  4. Kilobyte

Question 2

How many bits are in one byte?
  1. 8
  2. 4
  3. 16
  4. 10

Question 3

How many bits are in one nibble?
  1. 4
  2. 2
  3. 8
  4. 16

Question 4

What base is binary?
  1. 2
  2. 8
  3. 10
  4. 16

Question 5

Which digits are used in binary?
  1. 0 and 1
  2. 0 to 9
  3. A to F
  4. 1 to 8

Question 6

What is denary 5 in binary?
  1. 101
  2. 111
  3. 100
  4. 110

Question 7

What is binary 1001 in denary?
  1. 9
  2. 8
  3. 10
  4. 11

Question 8

What is ASCII mainly used to represent?
  1. Text characters
  2. Audio levels
  3. Pixel colours
  4. Program speed

Question 9

Which standard represents the widest range of text characters?
  1. Unicode
  2. ASCII
  3. JPEG
  4. MIDI

Question 10

What is \(1\,\mathrm{KB}\) in bytes?
  1. \(1000\,\mathrm{bytes}\)
  2. \(100\,\mathrm{bytes}\)
  3. \(8\,\mathrm{bytes}\)
  4. \(2000\,\mathrm{bytes}\)

Question 11

What is \(1\,\mathrm{MB}\) in \(\mathrm{KB}\)?
  1. \(1000\,\mathrm{KB}\)
  2. \(100\,\mathrm{KB}\)
  3. \(1000000\,\mathrm{KB}\)
  4. \(1\,\mathrm{KB}\)

Question 12

A pixel is part of what?
  1. Digital image
  2. Sound file
  3. CPU
  4. Network packet

Question 13

An image is \(800\times600\) pixels. How many pixels does it contain?
  1. \(480000\)
  2. \(1400\)
  3. \(200\)
  4. \(4800\)

Question 14

What does colour depth measure?
  1. Number of bits per pixel
  2. Image width in pixels
  3. Image load speed
  4. Number of files in a folder

Question 15

What usually results from lossy compression?
  1. Smaller file; some data discarded
  2. Smaller file; all data preserved
  3. Same size; some data discarded
  4. Larger file; all data preserved

Question 16

What does lossless compression give?
  1. Smaller files with no data loss
  2. Smaller files with quality loss
  3. Larger files with better quality
  4. No change to file size

Question 17

Audio sampled \(8000\) times per second for \(2\) seconds contains how many samples?
  1. \(16000\)
  2. \(4000\)
  3. \(8002\)
  4. \(64000000\)

Question 18

What does higher audio bit rate usually give?
  1. Better quality
  2. Lower quality
  3. No difference
  4. Silent audio

Question 19

What base is hexadecimal?
  1. 16
  2. 2
  3. 8
  4. 10

Question 20

Which letter can appear in hexadecimal?
  1. F
  2. G
  3. Z
  4. Q

Question 21

What is denary 10 in binary?
  1. 1010
  2. 1001
  3. 1100
  4. 1110

Question 22

What denary value is hexadecimal A?
  1. 10
  2. 8
  3. 12
  4. 16

Question 23

What is denary?
  1. The base-10 number system
  2. The base-2 number system
  3. The base-16 number system
  4. A type of image compression

Question 24

What is binary \(1111\) in hexadecimal?
  1. \(\mathrm{F}\)
  2. \(\mathrm{E}\)
  3. \(10\)
  4. \(16\)

Question 25

How many colours can \(2\)-bit colour depth represent?
  1. \(4\)
  2. \(2\)
  3. \(8\)
  4. \(16\)

Question 26

Which pair determines image resolution?
  1. Pixel width and height
  2. Colour depth and bit rate
  3. Sample rate and duration
  4. File name and extension

Question 27

What does colour depth affect in an image?
  1. The number of colours each pixel can represent
  2. The number of pixels across the image
  3. The number of samples recorded each second
  4. The number of frames displayed each second

Question 28

Which value could be an audio sampling rate?
  1. \(44.1\,\mathrm{kHz}\)
  2. \(24\) bits per pixel
  3. \(1920\times1080\) pixels
  4. \(16\) million colours

Question 29

Which operation reduces a file's size?
  1. Compression
  2. Encryption
  3. Sampling
  4. Rendering

Question 30

In binary \(1010\), what is the leftmost \(1\) worth?
  1. \(8\)
  2. \(1\)
  3. \(2\)
  4. \(10\)

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Review Binary and Data questions for Computer Science, with correct answers shown and coverage across defining the smallest unit of data; explaining how many bits are in one byte; explaining how many bits are in one nibble.

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