2024-25 - Y8 - Data Representation - Baseline Quiz

How many digits are used in the decimal number system?

• 2
• 8
• 10
• 16

What number system is used by a computer?

• Decimal
• Binary
• Octal
• None of these

Which of these is a valid binary number?

• 1011
• 911

• 24
• 0123

What do you think "bit" stands for?

• Binary Information Technology
• Binary Digit
• Big Information Term
• Byte Information

If a bit is a single 0 or 1, how many bits is the number 100101?

• 2
• 4
• 6
• 8

What number is missing from this number sequence: 1, 2, 4, _, 16, 32, 64, 128?

• 6
• 7
• 8
• 9

If the letter A has the code 65, B has the code 66, what code will D have?

• 62
• 64
• 66
• 68

What is a bitmap image made up of?

• Pixels
• Colours
• Samples
• Characters

Imagine you have a square image that is 5x5 pixels. If you add more pixels to the image, what do you think will happen to the image?

• It will get blurrier
• It will get sharper and clearer
• It will stay the same
• It will become a sound

Imagine you are recording sound by taking snapshots of it at regular intervals. What happens if you take more snapshots (samples) each second?

• The sound quality improves
• The sound gets louder
• The recording gets shorter
• The sound becomes quieter