Character code system

Question 1

What does ASCII stand for

Answer 1

American Standard Code for Information Interchange

Question 2

What is ASCII

Answer 2

A standard binary character coding system for characters and numbers

Question 3

Define character code

Answer 3

A binary representation of a letter, number or special character

Question 4

How many bits in ASCII

Answer 4

7 bits

Question 5

What is UNICODE

Answer 5

Universal Character Coding

Question 6

How many bits in extended ASCII

Answer 6

8 bits

Question 7

How many characters are assigned to how many numbers

Answer 7

100,000+ characters assigned to 100,000+ numbers

Question 8

What is included in UTF8

Answer 8

ASCII

Question 9

1 byte UTF8

Answer 9

Starts with 0

Question 10

2 byte UTF8

Answer 10

First byte starts with 110
Second byte starts with 10

Question 11

3 byte UTF8

Answer 11

First byte starts with 111
Other two bytes start with 10 each

Question 12

Is ASCII just as efficient as UTF8

Answer 12

Yes

Question 13

What is a parity bit

Answer 13

A method of checking binary codes by counting the number of 0s and 1s in the code

Question 14

Odd parity bit:

Answer 14

1. Count amount of 1’s
2. Add a bit to the end to make the amount of 1’s odd (if needed)

Question 16

Even parity bit:

Answer 16

1. Count amount of 1’s
2. Add a bit to the end to make the amount of 1’s even (if needed)