jun19y507642401 y5076424 ibmjun19e5 level 3 technical level it cyber security it networking it programming it user support unit 1 fundamental principles of computing thursday 16 may 2019 mo
Level 3 Technical Level
IT: CYBER SECURITY
IT: NETWORKING
IT: PROGRAMMING
IT: USER SUPPORT
Unit 1 Fundamental principles of computing
Thursday 16 May 2019 Morning Time allowed: 2 hours
Materials
For this paper you must have: For Examiner’s Use
a ruler
a scientific calculator (non-programmable) Question Mark
stencils or other drawing equipment (eg flowchart stencils). 1−5
Instructions 6
Use black ink or black ball-point pen.
Fill in the boxes at the top of this page. 7
Answer all questions. 8
You must answer the questions in the spaces provided. Do not write outside
9
the box around each page or on blank pages.
Do all rough work in this book. Cross through any work you do not want to be 10
marked. 11
If you need more space use the additional pages at the back of this booklet.
12
Information
13
The marks for questions are shown in brackets.
The maximum mark for this paper is 80. There are 50 marks in Section A 14
and 30 marks in Section B.
15
Both sections should be attempted.
16
Advice
In all calculations, show clearly how you work out your answer. 17
Use diagrams, where appropriate, to clarify your answers. TOTAL
You are expected to use a calculator where appropriate.
You are reminded of the need for good English and clear presentation in your
answers.
*jun19y507642401*
IB/M/Jun19/E5 Y/507/6424
, 2
Do not write
outside the
Section A box
Answer all questions in this section.
0 1 Which logic gate reverses the input?
Tick () one box.
[1 mark]
AND
NOT
OR
XOR
0 2 Which value is exactly 1 gibibyte?
Tick () one box.
[1 mark]
1000 megabytes
1000 gigabytes
220 bytes
230 bytes
*02*
IB/M/Jun19/Y/507/6424
, 3
Do not write
outside the
box
0 3 Machine code instructions are written in
Tick () one box.
[1 mark]
binary.
mnemonics.
structured English.
symbols.
0 4 A firewall does which of the following?
Tick () one box.
[1 mark]
Examines all packets of data coming into the network.
Prevents users clicking on suspicious email attachments.
Stops spam from clogging up the network.
Warns the network administrator about Botnet attacks.
Turn over for the next question
*03*
IB/M/Jun19/Y/507/6424
, 4
Turn over ► Do not write
outside the
*03*
IB/M/Jun19/Y/507/6424
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