WorksheetsNetworks - Year 8
Total questions: 10
Worksheet time: 8mins
Which of these can be used to connect a computer to the Internet?
fibe-optic broadband
wireless (Wi-Fi)
satellite
all of the above
An advantage of wireless connectivity is:
it is more secure
there is no need to be physically connected
it is less expensive than a cable connection
it is a faster connection
A Local Area Network (LAN):
is typically used by no more than six users simultaneously
usually operates on a single site or within a single building
always uses cables to connect
all of the above
Wide Area Networks (WANs)
cover a large geographical area
use cables, telephone lines, satellites and radio waves to connect
are used by international organisations
Advantages of a bus network
One-way system so not affected by heavy traffic
Fastest performance
Failure of one node does not affect the rest of the bus network
A failure in the minor cables will only affect one node
Disadvantages of a bus network:
If the main bus cable fails then the whole network will fail
An extra hub or switch further increases the cost
Cable failure anywhere will affect the whole network
Performance of the network slows down rapidly with more nodes or heavy network traffic
Advantage of a ring network
One-way system so not affected by heavy traffic
Fastest performance
Easy to install and to expand with extra nodes
A failure in the minor cables will only affect one node
Disadvantages of a ring network
All nodes must be switched on
An extra hub or switch further increases the cost
Cable failure anywhere will affect the whole network
Need to ‘break’ the ring in order to add a new node
Advantages of a star network
One-way system so not affected by heavy traffic
Fastest performance
Easy to install and to expand with extra nodes
A failure in the minor cables will only affect one node
Disadvantages of a star network
Uses the most cable which makes it more expensive
An extra hub or switch further increases the cost
Cable failure anywhere will affect the whole network
Need to ‘break’ the network in order to add a new node
