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Qualifications Edexcel GCSE Computer Science 4.1 Networks

Topologies

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Topologies exam questions17 questions with mark schemes and example answers
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Which term describes a network layout in which every device has its own cable running to a central switch?
Star topology
What is the name for the component fitted at each end of a bus topology network to absorb signals and stop them reflecting back along the cable?
Terminator
Which term describes a network layout in which every device is connected directly to every other device?
Full mesh topology
What is meant by a bus topology?
All devices connect to a single shared coaxial cable
What is meant by a partial mesh topology?
Devices connect to several other devices, but not to all of them
What is meant by a node?
A device such as a computer or printer on a network
In a star topology, what happens to the rest of the network if one device's cable fails?
The other devices are not affected
In a bus topology, what are the computers and other devices connected to?
A single coaxial cable
What is the purpose of terminators in a bus topology?
To absorb signals so they do not reflect back
Why does a star topology transfer data quickly?
Each cable is not shared with other computers
Why can a bus topology be a security risk?
Any device can view all data on the cable
Why is a mesh topology described as resilient?
Data can take another route if a connection fails
In a wireless mesh network, how many nodes need a wired connection to the Internet?
Only one node needs a wired connection
In a star topology, what happens if the central switch fails?
No device can send data to any other device
Why is a bus topology usually cheaper to install than a star topology?
It needs less cable than a star topology
In a mesh network, what do the nodes do with data that they receive?
They pass it on towards its destination
What happens to a wireless mesh network as more nodes are added?
There are more routes for data to travel through