Unit 7 Essay

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Miguel Rodriguez
Unit 7 Lab 7.1: Distance Considerations
Exercise 7.1.1
It’s impractical for an organization to own the entirety of a WAN because it would be very expensive for the company to run all the lines necessary and to pay for all the labor to keep the WAN up and running. It is less expensive for an organization to own a LAN so that’s why it is favorable for them to maintain ownership of it.
Exercise 7.1.2
The further a signal is transmitted on a LAN lessens the strength of the signal. To transmit signals over a long distance access points are required which also decreases signal strength.
Exercise 7.1.3
Media| Infrastructure

| Summary |

UTP | Phone lines

| Uses a customized infrastructure for performing two

jobs, one being phone and the other being data transfer |
Coaxial

| Television cable | This type of media is used for transmission of

television from a company to a customers house. |
Fiber­optic | Cellular, Broadband

| Uses a customized infrastructure to run

dedicated connections; this is a costly option

|

Electric power lines

| Electricity, Broadband | 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

| Transmits from ground to space then back to where the

transmission is required to be sent

|

WiMAX (Worldwide Interoperability for Microwave Access)

|

Used

for

transmitting a wireless network that could be many miles wide.|
HSPA+ (Evolved High­Speed Packet Access)

| Used for telecom companies

to transfer from towers at 4G speeds. |
Radio frequency

| Uses radio waves to transmit information world­wide

|

Lab 7.1 Review
1. Coaxial cables are used for long­distance communication in a WAN such as satellite television. The transmission reaches the satellite and is transmitted down to earth in which the signal bounces off the dish on a customer’s home.
The transmission is then sent through low noise block with an integrated feedhorn which sends the information down coaxial cables that go into the customer home to give them television.
2. The transmission is sent out wirelessly into the air and down into a WLAN.
Exercise 7.2.1

Limitations of using a dedicated leased line is speeds at which is transmitted through the lines. The company that supplies the communication sells different speeds and its up to the customer to choose which speed they want.
Exercise 7.2.2
The benefits to using a partial­mesh topology is that if one line in the topology goes down you are still able to send data to wherever it is destined to go.
Exercise 7.2.3
The benefits of a Hub and Spoke WAN topology is that it is…