Why Is It Impractical for an Organization to Own the Entirety of a Wan_ Essay

Why is it impractical for an organization to own the entirety of a WAN? There are no limitations on WANs so they can be custom built for the size of the organization.

Why is it favorable for an organization to maintain ownership of the entirety of the LAN? For the purpose of organizational expansion.

Exercise 7.1.2

What effect will increasing the required transmission distance have on transmitting the signal clearly? The longer the distance the more chances that you have for signal loss and lack of signal strength.

Exercise 7.1.3

Media

Infrastructure

Summary

UTP

Phone Lines

Used in telephone cables and computer networking

Coaxial

Television Cable

Include feedlines connecting radio transmitters and receivers with their antennas, computer network (Internet) connections, and distributing cable television signals. Fiber-optic

Can be used in optical illumination; computer networking

Uses a customized infrastructure to run dedicated connections; this is a costly option. Electric power lines

Generating power between power plants and electrical substations This type of media can be used with Broadband over Power Lines (BPL), making use of the extensive infrastructure in place already.

Exercise 7.1.4

Media

Summary

Satellite

It provides a way to stay connected when earth bound communications is hard to come by WiMax (Worldwide Interoperability for Microwave Access)

a wireless communications standard designed to provide 30 to 40 megabit-per-second data rates, HSPA + (Evolved High-Speed Packet Access)

the widely used WCDMA (UMTS) based 3G networks with higher speeds for the end user that are comparable to the newer LTE networks Radio Frequency rate of oscillation in the range of about 3 kHz to 300 GHz, which corresponds to the frequency of radio waves, and the alternating currents which carry radio signals

Lab 7.1 Review

1. How can cables like UTP and coaxial cable be used for long distance communication in a WAN infrastructure? It would be a better option because of the shielding. The only drawback would be the distances that they can travel. You would need to have multiple switchers and extenders to ensure that no communications can be lost.

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Where are these cables used most often?

They are a cheaper option and more durable that can be more uses out of it.

2. If the broadcast range can be increased for use in WAN, why is the frequency and therefore broadcast radius for WLAN APs? For the reason that you would not want to lose any signal quality and degradation.

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