NT1210 Lab 2.3 Network types and Topolgies

Exercise 2.3.1
Briefly define LAN, MAN, PAN, and WAN. What is the critical distinction for these networks?

LAN=Local Area Network. Which is a computer network that links devices within a building or group of adjacent buildings

MAN=Short for Metropolitan Area Network, a data network designed for a town or city. In terms of geographic breadth, MANs are larger than local-area networks (LANs), but smaller than wide-area networks (WANs). MANs are usually characterized by very high-speed connections using fiber optical cable or other digital media.

WAN=Wide Area Network. A computer network that spans a relatively large geographical area. Typically, a WAN consists of two or more local-area networks (LANs). Computers connected to a wide-area network are often connected through public networks, such as the telephone system. They can also be connected through leased lines or satellites. The largest WAN in existence is the Internet.

PAN=PAN is short for Personal Area Network Based on the electric-field transmission medium, is an IBM technology that allows individuals to exchange data with a simple touch or grasp, such as a handshake. A PAN user is equipped with a receiver and a transmitter, which constantly sends infinitesimal data-carrying currents -- in the 0.1-1 MHz band -- through the body and picks up currents when in very close range with another device or individual carrying a transmitter.

Exercise 2.3.2
Briefly define the term network topology. What is the metric used to define networks by topology?

The shape of a local-area network (LAN) or other communications system. Topologies are either physical or logical. The metric all depends on the type of network and how many devices connect to it.

Exercise 2.3.3
Using the ring topology shown in Figure 2-10, how many actual messages would it take (the