(a) Characteristics of networks and the importance of
protocols and standards.
(b) The internet structure:
• The TCP/IP Stack.
• DNS
• Protocol layering.
• LANs and WANs.
• Packet and circuit switching.
(c) Network security and threats, use of firewalls,
proxies and encryption.
(d) Network hardware.
(e) Client-server and peer to peer.
