Title: Computer Networks
Course: 2016FA-MCO-110-401 > Section: Module 8: IT Infrastructure

Click here for a downloadable version of this document:(EXTERNAL) Computer Networks

Computer Networks. What are they and how are they utilized? At the most rudimentary level, a network is any environment where two or more computers, or devices, are connected for the implicit function of exchanging data. These networks can vary widely in purpose, complexity, and implementation. The simple act of performing a general Google inquiry via your mobile device involves hundreds of interconnected and dependent networks.

Computer networks, once an exclusive tool of well-funded corporate entities and educational institutions, have proliferated at such an exponential rate that they have now become a normal part of most homes. The ability to share data instantaneously between organizations and individuals has the ability to fuel innovation (i.e., iTunes, Google, Microsoft Application Stores) and save lives (i.e., medical research exchanged between medical facilities).

While the types of networks have changed and speeds have greatly improved, there are only two types of core networks: Local Area Networks and Wide Area Networks. We will explore the detailed differences between these later in the documentation. The basics are as follows:

LAN (Local Area Network) – a network comprised of multiple data devices located in the same physical geographical location. This can be two computers in a home, an office, a classroom, or all the computers located in a single office building.

WAN (Wide Area Network) – a network comprised of multiple LAN networks. A WAN network is not limited by geographical location. WAN networks enable exchange of data across geographically diverse, or wide, areas. For example, the exchange of information between an accountant’s computer physically located in New York and a customer’s device located in Los Angeles is facilitated by a Wide Area Network.

Objectives met:
- C8
- 8.1