Computer Networks

Introduction

It appears that networks are present everywhere. There isn't much you can do with data that doesn't include a network. Computer networks enable us to exchange resources and information, much like the human networks in which we all participate. Even more than in homes or schools, businesses rely heavily on networks. Networks not only help businesses and individuals save money, but they also assist generate revenue. Networking in the home will undoubtedly become more popular over the next years, just as it has in business. Nearly everyone in even modestly developed countries will have networked components in their houses in the near future.
You'll start by relating networks to scenarios and ideas that you are already familiar with. It helps if you can really start using networks once you have a basic idea of what they are and what they can achieve. In fact, it is so helpful to learn the ropes of networking through hands-on guided practice that that’s what is planned for you here. You will play the role of an employee in a small computer business called PlaySand Tech. The more you become the person, the more you will learn about the need for and operation of computer networks.

Task

You will be divided into 5 groups. A specific task will be assigned for each group.

Group Guidelines:

1 group leader (to email completed tasks/outputs in compliance with the given rubrics)
2 presenters (to make a 2-minute presentation)
The rest of the group members act as researchers and designers
Remember and adhere to class rules for efficient group work.

Group 1: Task 1

Create a concept map about computer network to show the relationships between and among ideas related to it.

Group 2: Task 2

Create a presentation which provides information about the types of computer network.

Group 3: Task 3

Create a presentation which provides information about the types of topologies.

Group 4: Task 4

List down the similarities and differences of UTP and STP cables.

Group 5: Task 5

Create a color wheel to show the sequence of colors of wires in a straight-through network cable.

FINAL TASK:

Imagine that you are a computer technician in a small computer business called PlaySand Tech. Your office needs some Ethernet cables to be used in connecting PCs (clients) to its server. Your task is to create an Ethernet cable using a UTP cable (category 5). This cable is one of the most popular LAN cables. Adding RJ-45 connectors at both end of the UTP cable, it becomes a LAN cable usually use in connecting these PCs.

Bear in mind that safety precautions must always be applied and observed during the fabrication of the said cables. Also, materials and tools to be used must always be complete and functional to save time, money and effort.

You may visit the following links for your references:

Process

The following tasks have to be completed using versions 2007 or newer versions of Microsoft Office Suite. Save all projects.

Group 1: Task 1

Create a concept map about computer network using MS Word to show the relationships between and among ideas related to it. Include a sample photo of a computer network, its concise definition, and importance to education.

Group 2: Task 2

Create a presentation using MS PowerPoint which provides information about the types of computer network. It will be viewed on a screen and will have its transition automatically. Highlight the similarities and differences of the types of computer networks. Include a definition for each type and pictures for each computer network.

Group 3: Task 3

Create a presentation using MS PowerPoint which provides information about the types of topologies. It will be viewed on a screen and will have its transition automatically. Highlight the similarities and differences of these types of topologies. Include a definition for each types and pictures for each topology.

Group 4: Task 4

Create a T-Chart using MS Excel and list the similarities and differences of UTP and STP cables. Include definition and picture of each type of cable.

Group 5: Task 5

Create a color wheel using MS Paint to show the sequence of colors of wires in a straight-through network cable. Include a table below the color wheel showing the colors of wire in each pin ID of the cable.

FINAL TASK:

Imagine that you are a computer technician in a small computer business called PlaySand Tech. Your office needs some Ethernet cables to be used in connecting PCs (clients) to its server. Your task is to create an Ethernet cable using a UTP cable (category 5). This cable is one of the most popular LAN cables. Adding RJ-45 connectors at both end of the UTP cable, it becomes a LAN cable usually use in connecting these PCs.

You may visit the following sites for your references:

- https://sites.google.com/site/pnutpck11/making-ethernet-cables

- https://www.youtube.com/watch?v=WvP0D0jiyLg

The following are the materials and steps in Creating an Ethernet cable.

Materials:
• Ethernet Category 5
• RJ-45 Ethernet cable connectors
• Sharp scissors or cutter
• Crimping tool
• Cable tester

Procedure in Making a UTP cable
1. Look at one end of the cable. Notice how the outer layer, or cable sheath, surrounds several wires inside. Use your razor blade or scissors to carefully strip off about 1" of the cable sheath from the end of the cable. Be sure not to cut or nick any of the wires! Otherwise, you'll need to start over.
2. Separate and straighten out the wires so they are no longer twisted.
3. Note how the wires are each different colors. The order you arrange them in will determine what the cable can do. For this project, we will be making “straight-through” cables to connect computers through a hub, or to connect a computer to your Internet connection.
4. Lay the wires flat in this order:
a. Orange - white
b. Orange
c. Green - white
d. Blue
e. Blue/White
f. Green
g. Brown - white
h. Brown
5. Make sure the wires lay flat and parallel, with no spaces between them. Trim them evenly, leaving only half an inch (0.5”) sticking out from the uncut cable sheath. Check once more that the color order is still correct.
6. Hold the RJ-45 connector with the clip facing down and away from you. Push the wires into the plug. Check that the wires are flat and even at the front of the plug, so that they will make a good electrical connection.
7. Use the crimping tool to squeeze the plug, so the wires are held firmly in place.
8. Repeat the process with the other side of the cable.
9. Test the connections using a cable tester, or by plugging it in to make sure it works.

You may visit/click the following links/files for your references:

Evaluation

Rubrics

Safety Rules	Student didn't observe any applicable safety rules.	Student observed some applicable safety rules.	Student observed all applicable safety rules.
Measured and Cut Cable	Student didn't use the proper tool, didn't measure and cut the cable the proper length.	Student didn't use the proper tool. Student didn't measure the cable correctly.	Student used the proper tool, measured and cut the cable the proper length.
Correct wiring scheme used	The student didn't know the wiring schemes.	The student didn't pick the correct wiring scheme.	Student used the correct wiring scheme.
Test the patch cord	The student didn't test the patch cord and the patch cord failed.	The student didn't test the patch cord The patch cord failed when tested.	The student tested the patch cord and it passed.

Conclusion

Looking Back:

After creating an Ethernet cable, you will be asked to make connections about what you have learned. In a one page reflective essay, discuss what you have learned about computer network and relate to your daily life.

Looking Forward:

You may also create a different type of Ethernet cable used in computer configuration. You may create a cross-over Ethernet cable to be used in configuring a client/server network.