a) Write down in words and describe the meanings of terms LAN and WAN. Explain how do they differ?
b) State three basic topologies for LAN use, and describe the differences among then.
c) What limits the total length of an Ethernet?
d) What do you understand a protocol? Why protocols are essential in data communications?
e) Describe the differences among the following: bridges, repeaters, routers, and gateways.