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(a) Identify one Packet Switching technique.
[1]
(b) List and briefly explain the three components of a packet. [3]
(c) A typical packet size in today’s context is 512k. Discuss
briefly one consideration when choosing an appropriate packet size.
[2]
(d) As technology becomes more complex, and communication more affordable,
applications tend to evolve from one kind of data-flow (simplex, half-duplex,
duplex) to another. Describe briefly in your words one 'real-world'
example of an application evolving in this way. [4]
(e) The Internet uses packet switching, whereas bank ATMs may use
a duplex
connection on a fixed line. Explain why each is appropriate for its
purpose. [5]
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