AQA GCSE Computer Science - 3.3.5 Character Encoding

What does ASCII stand for?

• American Standard Code for Information Interchange
• Australian Standard Code for Information Interchange
• American Standard Character Information for Interchange
• Australian Standard Character Information Interchange

How many different characters does 7 bit ASCII have?

• 128
• 64
• 256
• 512

What is one way unicode better than ASCII?

• It contains all characters in the world
• It has built-in encryption
• It takes up less data to store characters
• It uses checksums to validate characters

What did unicode assign each character to

• An Integer
• A string of binary digits
• A number from 0 to 1
• A string of ASCII digits

Which Character encoding would be used to store emojis?

• unicode
• ASCII
• Both
• Neither

Which Character encoding uses less space on average?

• ASCII
• unicode
• They are both the same
• They are made up by a government agency to trick the world into tranquillity. (I ran out of a MC option)

Which character encoder is standardized?

• Both
• unicode
• ASCII
• Neither

How many characters can 8 bit ascii encode?

• 256
• 128
• 512
• 1024

How many bits does UTF-8 use

• 32
• 8
• 24
• 16

How many extra characters does extended ASCII add

• 128
• 64
• 256
• 96