Half-duplex and full-duplex mode of transmission, Computer Network Security

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Question:

a. State briefly three reasons why computer networks are used?

b. Differentiate between simplex, half-duplex and full-duplex mode of transmission.

c. State any three disadvantages of synchronous mode of transmission.

d. Fiber optic is the new form of bounded media. In this context:

a. Explain briefly any four characteristics of a fiber optic cable.

b. State three disadvantages it has over copper wire.

e. Demonstrate your understanding of the following:

a. LAN

b. WAN


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