Let’s Recall!
Question
Emma is a teacher in a primary school,
teaching children aged 8 to 10. The school has
two computer rooms, each room has 20
computers
Which one type of network connects the
computers?
☐ A wide area network
☐ B local area network
☐ C personal area network.
Emma is a teacher in a primary school,
teaching children aged 8 to 10. The school has
two computer rooms, each room has 20
computers
Which one type of network connects the
computers?
☐ A wide area network
☐ B local area network
☐ C personal area network.
Question
Which one device stores data that all
the computers can access?
☐ A modem
☐ B server
☐ C router
☐ D gateway.
Which one device stores data that all
the computers can access?
☐ A modem
☐ B server
☐ C router
☐ D gateway.
Identify three components not given in the previous question
that can be used within the network.
(3)
Identify three components not given in the previous question that can be
used within the network.
✓network interface card
✓wireless access point
✓switch
✓hub
✓(copper) cable
✓fibre-optic cable
✓booster
(3)
Each computer has a MAC (media access control)
address, and when the computers connect to the
network, they are given an IP (internet protocol)
address. Describe MAC and IP addresses
(4)
Saying it’s a number
is not enough, this
This is given in the needs to say what is
question – no point in special about it, i.e. it
repeating it. is unique.
MAC stands for Media Access Control, it’s a number that’s given to computers so they can
connect to a network. This is given in the
question – no point
in repeating it.
IP stands for Internet Protocol. It’s a number that lets computers go on the Internet.
An IP doesn’t only let
This is given in the you go on the
question – no point Internet, so this is not
in repeating it. fully accurate. 0 marks
Correct Answer
This is a clear
characteristic of a
MAC address. (1)
A MAC is a unique number that is given to computers and their NICs so they can connect
to networks. They are built into the computer by the manufacturer and can’t be changed.
Identifies how a device
gets a MAC. (1)
An IP is a unique number for a computer that is given by the Internet Service Provider.
The IP can change (dynamic) so you get a new one each time you go online, or can stay
the same (static) so it always stays the same.
Identifies that it can
be static or dynamic
Clearly states and what these mean.
how an IP (1)
address is
given to a
computer. (1)
4 marks
The school has four laptops that connect to the network
wirelessly.
State three benefits of the laptops connecting using
wireless instead of wired communication.(3)
The school has four laptops that connect to the
network wirelessly.
State three benefits of the laptops connecting using
wireless instead of wired communication.
Answer
• cables do not need to be purchased and set up
• devices can be moved/portable
• easier to add new devices
Question
Explain why the laptops connect using Wi-Fi instead of
Bluetooth (4)
Explain why the laptops connect using Wi-Fi instead of Bluetooth
Answer
➢Wi-Fi transmits over further distance
Benefit: laptops can be further away from the WAP
➢Wi-Fi has higher bandwidth
Benefit: data is transferred faster
➢Wi-Fi transmission is more secure
Benefit: data can be encrypted, less likely to intercepted and stolen
➢Wi-Fi can have multiple devices connecting at a time
Benefit: There are multiple laptops that need to connect at the same time.
Question
Cheng is shopkeeper who does online business, he wants
his customers need to pay for the items securely.
Explain how Cheng can help ensure online payments are
secure. (2)
This has not answered
the question.
Cheng can use a firewall to stop hackers getting into his computer and accessing the data.
A firewall can protect the
data on your computer
from hackers, but not
online payments.
0 marks
This has not answered
the question.
Cheng can use a firewall to stop hackers getting into his computer and accessing the data.
A firewall can protect the
data on your computer
from hackers, but not
online payments.
0 marks
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Correct Answer
They have identified that
Cheng can encrypt the data. (1)
Cheng can set up his website to make sure it uses encryption when submitting payment
details, for example by using https (hypertext transfer protocol secure) which encrypts the
data for you when it’s sent.
This means if it is intercepted, it is all jumbled up and hackers won’t understand it.
They have
explained that this
can be done by
using https. (1)
2 marks
Question
The laptop has a built-in keyboard and mouse.
Draw a diagram to show how user can connect two other devices to the
laptop that will enable the user to control a game.
Label each device and the connectivity you use in your diagram
2 marks
The laptop has a built-in keyboard and mouse.
Draw a diagram to show how user can connect two other devices to the
laptop that will enable the user to control a game.
Label each device and the connectivity you use in your diagram
2 marks
Question
Sachini creates a personal area network (PAN) with her
laptop and her smartphone.
Describe one way that Sachini could use a PAN with
these devices (2)
Sachini creates a personal area network (PAN) with her laptop and her smartphone.
Describe one way that Sachini could use a PAN with these devices.
Answer:
➢Sachini could transfer data (1)
Why?Back up her phone’s photos/music/videos/contacts (1)
➢She could tether/hotspot/ share her smartphone’s 3G connection (1)
Why ? giving her laptop access to the Internet (1)
➢She could transfer data between devices (1)
How? using Bluetooth/USB (1)
Question
Which one of these is a wired connectivity type?
Question
Which one of these is a wired connectivity type?
Question
Explain one advantage of using Media Access Control (MAC) addresses
rather than Internet Protocol (IP) addresses to identify devices on a local
area network.
Explain one advantage of using Media Access Control (MAC) addresses
rather than Internet Protocol (IP) addresses to identify devices on a local
area network.
In a LAN by default the router will assign IPs as it needs to, should you stay connected and never
disconnect your local IP will remain the same. But if you should disconnect and reconnect you will
probably get a different IP, especially if someone else connected while you were not.
Question
State two issues caused by not identifying devices on a network.
Question
State two issues caused by not identifying devices on a network.
Question
Explain one disadvantage of connecting printer to a
network.
(2)
Explain one disadvantage of connecting printer to a network.
Describe - keyword
State the points
Give the characteristics
Give the main features
Explain - keyword
Set out the purposes
Set out the reasons
Give the relationship between things
Set out why with justification
