Topic 2 - Programming

Question 1

What is a Data type ?

Answer 1

How the data is used and represented

Question 2

Data type examples ?

Answer 2

Integer, float, character, float, boolean and string

Question 3

What is a definite loop ?

Answer 3

For loop - ends at a fixed value

Question 4

What is an indefinite loop ?

Answer 4

While loop - ends once a condition is met

Question 5

Nested loops

Answer 5

A loop within a loop

Question 6

Selection examples

Answer 6

If, elif and else

Question 7

What do subroutines include ?

Answer 7

Procedures and functions

Question 8

What does a procedure do ?

Answer 8

Once a task has been completed, it may not return a value

Question 9

What does a function do ?

Answer 9

Once a task is completed, a value will always return

Question 10

How is addition represented in programming?

Answer 10

+

Question 11

How is subtraction represented in programming ?

Answer 11

-

Question 12

How is division represented in programming ?

Answer 12

/

Question 13

How is integer division represented in programming ?

Answer 13

\

Question 14

How is a modular represented in programming ?

Answer 14

MOD

Question 15

How is multiplication represented in programming ?

Answer 15

*

Question 16

Records

Answer 16

Multiple pieces of data belonging to different data types

Question 17

Arrays

Answer 17

Like a variable (has a name, data type, etc) but instead can store many pieces of data.

Question 18

Data Validations

Answer 18

Process that checks on data

Question 19

What is a presence check?

Answer 19

If anything is entered, it is accepted, if nothing is entered then it is invalid.

Question 20

What does a range check handle?

Answer 20

Numbers and Dates

Question 21

What does a Type check do?

Answer 21

Makes sure the correct data type is used

Question 22

What does a length check do?

Answer 22

Checks appropriate number of characters entered for things like usernames and passwords.

Question 23

What is a format check?

Answer 23

It is a type check for individual characters. It ensures that characters are in the correct place. An example would be for a national insurance number.

Question 24

What does a look up check do?

Answer 24

Makes sure that data that is entered actually exists within a list.

Question 25

What is a string operation?

Answer 25

Name of any process that is performed on a string.

Question 26

What is a sub-string?

Answer 26

Part of a larger string.

Question 27

What is character code?

Answer 27

Upper case letters that have different codes to lower case letters,

Question 28

What is a data structure?

Answer 28

An organised means of storing related data.

Question 29

What can a list do?

Answer 29

Can store multiple pieces of data even though the list has only one name.

Question 30

One dimensional arrays

Answer 30

Each having an index one higher than the index before.

Question 31

Two dimensional arrays

Answer 31

Elements are accessed by using two index numbers .

Question 32

Boolean array

Answer 32

Each element can only hold a single value of True or False.