331: STUDY DATA COMMUNICATIONS AND NETWORKS

 1. Discuss computer networks (5 hrs)  2. Discuss data communications (15 hrs)

 PERFORMANCE STANDARD ◦ Given a network system, identify and illustrate the different data communications components clearly  Objectives: ◦ Define elements of a communication system ◦ Define data communications ◦ Discuss various types of transmission media and their characteristics ◦ Discuss encoding of information tor transmission ◦ Discuss types of signal & their characteristics ◦ Relate data capacity of a channel and bandwidth ◦ Classify media based on bandwidth ◦ Discuss channel organization

Define Data Communication

 In computer, the data is information processed or stored by a computer.  This information may be in the form of text documents, images, audio clips, software programs, or other types of data.  The computer data is a form of bunch of ones and zeros, known as binary data.  All computer data is in binary format, it can be created, processed, saved, and stored digitally.

 The term telecommunication means communication at a distance.  The word data refers to the information presented in whatever form is agreed upon by the parties creating and using the data.  Data communications are the exchange of data between two devices via some form of transmission medium such as a wire cable.

 It is also can be defined as a subset of telecommunication involving the transmission of data to and from computers and components of computer systems. ◦ More specifically data communication is transmitted via mediums such as wires, coaxial cables, fiber optics, or radiated electromagnetic waves such as broadcast radio, infrared light, microwaves, and satellites.