W3 - Primitive Data Types

Question 1

What are the 5 types of data types

Answer 1

Real/float, Boolean, integer, string and character

Question 2

What is an integer?

Answer 2

Whole numbers without decimal places

Question 3

What is a float/real?

Answer 3

Numeric value that has decimal places

Question 4

What is Boolean

Answer 4

Holds one of two values - true/false, 1/0 etc

Question 5

What is character?

Answer 5

A single character

Question 6

What is string?

Answer 6

String is a collection of characters

Question 7

What is ASCII?

Answer 7

ASCII stands for American Standard Code for Information Interchange and is a set of digital codes which are used to represent 128 different characters (numbers, letters and symbols)

Question 8

What is ASCII used for?

Answer 8

Used as a standard format in the transfer of text between computer systems.

Question 9

How do Parity Checks work?

Answer 9

A bit is assigned to be a parity bit. It is then entered to be a 0 or 1 (depending on if we are looking for odd or even parity). Then it sees if there are an even number of 1s and 0s if you are looking for even parity and vice versa

Question 10

What are the main problem with Parity Checks?

Answer 10

2 bit changes cannot be detected

Question 11

What is Unicode?

Answer 11

It is a globally recognised system to maintain all character sets by mapping different binary values to them. It can represent more characters than ASCII but it has larger file sizes and data transmission times

Question 13

What is Parity?

Answer 13

A function that provides a check on a set of binary values to see if the data has changed during transmission