State the role of each of the following data communication devices:repeater and router
(b) Figure 3 shows a network based on the bus topology.
(i) Identify the component labelled P.
(ii) State the function of the component labelled P.
(c) Students of Neema Secondary School formed an environmental club with a goal of taking part in environmental conservation activities. Outline three ways in which they can use the internet to achieve this goal.
(d) (i) A company has three branches A, B and C where A is the headquarter. The local area network (LAN) at A is directly connected to the LAN at B and directly to the LAN at C. Explain two benefits of having the LAN at B also directly connected to the LAN at C. (4 marks)
(ii) State three ways in which a company can protect its computer network from hackers.
(a) (i) Repeater
(ii) Terminator in a backbone is used to prevent data signal from bouncing back/absorb signals.
(c) Use of internet in environmental conservation club
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