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UNIT 5 STUDY GUIDE
Within the guide you will find links for various videos. Some videos are hosted on Lynda.com. The instructions below will aid you in accessing Lynda.com
Technology Description How is this utilized
Telecommunication
Type What Technology Uses Pros/Cons
Category 5 Cable (Cat5) Max length 100 meters
Fiber Optics
Radio Frequency
Coax Cable Max distance 500 m
Device
Description What Business Need does it meet
How to Login to Lynda.com:
1. Visit Lynda.com
2. Click “Sign In” on the Lynda homepage
3. On the sign in page you will see a link labeled “Sign in with your organization portal”, click this link
4. Type wgu.edu into the box provided and this will direct you to the WGU Secure Sign-in page
5. Login using your WGU username and password.
6. This will then allow you to access the videos below.
1. Telecommunications
Telecommunication is the transmission of information by various types
of technologies over wire, radio, optical or other electromagnetic
systems. It has its origin in the desire of humans for communication
over a distance greater than that feasible with the human voice, but
with a similar scale of expediency
Public Switched Telephone Network (PSTN) The public switched telephone network is the aggregate of the world's
circuit-switched telephone networks that are operated by national,
regional, or local telephony operators, providing infrastructure and
services for public telecommunication
Voice over Internet Protocol (VoIP) Voice over Internet Protocol, also called IP telephony, is a method and
group of technologies for the delivery of voice communications and
multimedia sessions over Internet Protocol networks, such as the
Internet
2. Communication Mediums (i.e., Methods of sending computer signals)
Category 5 cable is a twisted pair cable for computer networks. Since
2001, the variant commonly in use is the Category 5e specification
An optical fiber is a flexible, transparent fiber made by drawing glass
or plastic to a diameter slightly thicker than that of a human hair.
Radio frequency is the oscillation rate of an alternating electric current
or voltage or of a magnetic, electric or electromagnetic field or
mechanical system in the frequency range from around 20 kHz to
around 300 GHz
Coaxial cable, or coax is a type of electrical cable consisting of an inner
conductor surrounded by a concentric conducting shield, with the two
separated by a dielectric; many coaxial cables also have a protective
outer sheath or jacket.
3. Describe the following network devices.

Bridge
Multiplexer
Repeater
Concept Description Examples
Protocol Wired networking (ethernet)