Oxford Cambridge and RSA
GCSE (9-1) Computer Science
Computer Systems
J277/01
Topic: Unit 1.3 Topologies (Star & Mesh)
Time allowed: 30 minutes
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INSTRUCTIONS
Use black ink.
Answer all the questions.
INFORMATION
The total mark for this paper is 20.
The marks for each question are shown in brackets [ ].
Turn over
1
Scenario:
A small architectural firm has 5 computers and 1 printer. They want to set up a Local Area Network (LAN) where all devices connect to a central Switch.
(a) Identify the name of this network topology.
[1]
(b) Draw a diagram of this topology in the space below.
Label all devices (Computers, Printer, Switch) clearly.
[3]
[Image of Star Network Topology Diagram]
(c) Explain one advantage of using this topology compared to a Mesh topology.
[2]
(d) Explain one disadvantage of using this topology.
[2]
Turn over
2
Scenario:
A military research facility requires a highly reliable network. They decide to use a Full Mesh topology for their 6 main servers.
(a) Describe what is meant by a Mesh topology.
[2]
[Image of Full Mesh Network Topology Diagram]
(b) Explain why a Mesh topology is considered more robust (reliable) than a Star topology.
[2]
(c) State one significant drawback of setting up a wired Full Mesh topology compared to a Star topology.
[1]
3
Wireless networks (Wi-Fi) often use a Partial Mesh topology to extend range.
(a) Explain the difference between a Full Mesh and a Partial Mesh topology.
[2]
(b) A large office building uses Wi-Fi extenders that connect to each other to boost the signal. Explain how this mesh arrangement helps a user who is walking from one end of the building to the other.