4. Backbone Networks and VLANS [20 marks] (a) What does a gateway do in addition to routing functions? (3 marks) (b) What typ

4. Backbone Networks and VLANS [20 marks] (a) What does a gateway do in addition to routing functions? (3 marks) (b) What type of backbone network is shown the diagram? marks) Floor 3 (e) If the computer labelled A sends out an ARP request, which of computers B, C, D, E, F, G, H, and Kwill receive it? 1ll the Router Rreceive the ARP request from computer A? (2 marks) E (d) How does the use of VLANS affect broadcast and collision domains? marks) C (e) Describe how 802.1Q works. (3 marks) ( Is it a good idea to align the boundaries of a VLAN with the boundaries of an IP subnet? Explain. (5 marks)| Floor 2 D $1 Internet Floor 1



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