CAPE Computer Science Unit 2 · 2012 · Paper 2 · Question 5(f)
State the role of each of layers 1 to 5 of the OSI model for network communication.
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Practise this questionOther parts of this question
- 5(a)(i)Describe the characteristics of twisted pair transmission media.[2 marks]
- 5(a)(ii)Describe the characteristics of fibre optic cable transmission media.[2 marks]
- 5(b)A ring network contains four computers, one of which has failed. Explain one modification to allow the remaining three computers to communicate, using a…[4 marks]
- 5(c)With the aid of a diagram, explain the role of a hub in a local area network.[3 marks]
- 5(d)With the aid of a diagram, explain how data is communicated in an IEEE802.11a network.[6 marks]
- 5(e)Outline the role of a firewall on a computer network.[3 marks]
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