Management Information Systems

Mathai, Ron

MIS 426

Professor Olga Foster

February 25, 2011

Chapter 6 Assignment

1) A computer network is a collection of computers that communicate with one another over transmission lines or a wireless system. There are three basic types of networks, which consist of local area networks (known as LANs), wide area networks (WANs), and Internets. A local area network (LANs) connects computers that reside in a single geographic location on the premises of the company that operates the LAN. The number of connected computers can range from two computers to several hundred computers. What sets LANs apart is its distinguishable characteristic of being located in a single location. A wide area network connects computers located in different geographic locations. The computers in two separated company sites must be connected using a WAN. So, while a college that has several computers, can be connected through a LAN, computers that are located in different cities or states are connected through the use of WANs because it is not practical for the computers to be connected by a physical wire. The Internet is a network of networks because it connects LANs, WANs, and other Internets. The "Internet" is a collection of networks that one uses to conduct electronic activities like visiting a web site or sending electronic mail. In order to provide seamless flow between the networks that conduct these communication methods, a layered protocol is set in place in order to establish a set of rules that two communication devices follow.

2) The key distinctions of a LAN, which is a group of computers connected together on a single company site, is that all of the computers are located on property controlled by the company that operates the LAN. This means that the company can run cables wherever needed to connect the computers (unlike the WAN.) The textbook has all the components that make up a LAN so I will list the elements...