WJEC A-Level Computer Science Unit 2 Practical Programming to Solve Problems overview quiz quiz

By a written examination

By an on-screen practical examination

By a coursework portfolio only

By an oral presentation

Start writing code immediately

Test with random data

Understand the problem and identify inputs and outputs

Optimise the code for speed

It is required by the programming language

It turns coding into transcription and makes errors easier to locate

It removes the need to test the program

It makes the program run faster at execution time

A single variable

An array or list

A Boolean flag

A constant

Three separate parallel arrays

A record grouping the related fields

A single integer variable

A stack

Clearly invalid and should be rejected

Typical valid input in the middle of the range

Right at the edges of the allowed range

Chosen completely at random

50

0

100

150

To make the program run faster

To check that entered data is reasonable and prevent crashes on bad data

To guarantee the data is factually correct

To encrypt the data

Removes the need for any testing

Lets each part be written and tested separately

Always makes the program shorter overall

Prevents the use of loops

A syntax error

An off-by-one error

A collision

A stack overflow

New theory not found in any other unit

The programming principles from Unit 1

Only database theory

Only networking theory

Only the input used

Only whether the program crashed

The expected result and the actual result

The time taken to type the code