Y8 - Cycle 2 - End of Cycle Knowledge Test

What numbering system is all data stored in?

• Binary

• Denary

• Octal

• Hexadecimal

What is this binary number in denary?

00000011

• 3

• 2

• 8

• 5

In binary, what is 1 + 1?

• 10

• 01

• 11

• 00

In hexadecimal, what number is represented by the character F?

• 15

• 12

• 10

• 13

What is the character set that uses 8 bits of data to represent each character (letter or symbol)?

• ASCII

• Unicode

• UTF32

• OCTAL

When recording audio, what particular quality of a sound wave is sampled 44,100 times per second?

• Amplitude

• Frequency

• Wavelength

• Pitch

How many microscopic lights are there inside each pixel?

• 3

• 2

• 4

• 1

What colour is created by this number?

00000000 11111111 00000000

• Green

• Red

• Blue

• Orange

What type of compression removes quality of an image (by making similar coloured pixels all one value) in order to reduce the storage required?

• Lossy

• Lossless

What do we need in order to decrypt an encrypted message?

• A Key

• A special computer

• The original message

• Morse code