Computer Principles N4 — Memo

August 2021 — N4 — Computer Principles

N4 2021 Nated Business

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Q1— Section header —

1.55

Q2— Section header —

2.1True

2.2True

2.3False

2.4True

2.55

Q3— Section header —

3.1010

Q4— Section header —

4.1Runtime error [10]10

Q5— Section header —

5.1.1bit is a binary digit

5.1.2byte equals eight bits

5.1.3A nibble is half of a byte

5.1.4

5.2BODMAS or {(\, /, *, +, (4\

5.3The content cannot be altered, so it is permanent. (2\ [14]14

Q6— Section header —

6.1.1Sequential ccess torage

6.1.2Stored data

6.1.3Terminator

6.1.4Manual input

6.1.5Magnetic disk

6.1.6Decision

6.1.7Predefined process

6.1.8

6.2Write an algorithm. Draw a flowchart. Write program. Test the program. Debug the program.

6.3In computer programming, a subroutine is a sequence of program instructions that performs a specific task, packaged as a unit. This unit can then be used in programs wherever that particular task should be performed.

Q7— Section header —

7.1Central rocessing nit (1\

7.2The purpose of RAM is to provide quick read and write access to a storage device. (2\

7.3Read only memory is a type of non volatile memory used in computers and other electronic devices. (2\

7.4Non volatile memory or non volatile storage is a type of computer memory that can retrieve stored information even after having been power cycled. (2\

7.5Does not lose contents when electricity goes off Cheaper compared to volatile memory ow capacity ow speed Modern computers no longer have floppy disk drive Files are easily corrupted They can be affected by magnet

Q8— Section header —

8.1Supercomputer Mainframe computer Minicomputer Microcomputer Serial communication uses fewer connections and cables than parallel communication. A serial communication device transfers data in bits in the same direction.

Q9— Section header —

Mark Allocation

Sections5 + 5 + 10 + 10 + 14 + 19 + 16 + 11 + 10 = 100 marks

Paper information

TitleMemo

SubjectComputer Principles

LevelN4

Document typeNated Business

Year2021

MonthAugust

Pages5

Downloads5

Examination context

Decade2020s

Years ago5y

SeasonWinter (SH)

Start daySunday

Exam periodAugust 2021

Days since exam1,897

About Computer Principles examination preparation

This TVET examination resource can be used as part of a structured revision programme. Past papers are most useful when learners attempt questions independently, work within a realistic time limit, and review their answers afterwards.

How to use this resource for revision

A TVET past examination paper is most useful when it is treated as an active revision exercise. Try the questions yourself before checking the corresponding memorandum. Where you make an error, identify the reason — was it a knowledge gap, a calculation mistake, an interpretation issue, or an examination technique problem?

For stronger examination practice, complete the paper without unnecessary interruptions and keep track of the questions that take the most time. Afterwards, review the memorandum and separate knowledge gaps from mistakes caused by interpretation, calculation, structure, or examination technique.

understanding question requirements

applying subject knowledge

working under time constraints

checking answers

identifying revision priorities

A practical revision approach

Start by completing the resource without looking at the memorandum. Review incorrect and incomplete answers afterwards and make a short revision list based on the areas that caused difficulty.

File details

File size174.2 KB

Pages5

Archived on8 September 2026

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