Chapter 3 CASE PROJECT

1.) XYZ Corp's Nashua, NH, facilities are two office buildings located 400 feet apart, each with i's own LAN. To connect the two networks, you plan to dig a place a trench and lay cable in conduit between the two buildings. You want to use fiber-optic cable, but your budget-conscious facilities manager wants to use thin wire Ethernet. What's the reason you can use to justify fiber-optic cable in this case?

Answer: (d)
- Fiber-optic leaves more room for growth, and for future needs for increased bandwidth, than thinnet does.

2.) TVBCA is moving to a new facilities. It's new campus includes three buildings, each no more than 100 meters apart from the others. The network is to link all the buildings together. Each of the buildings is to be remodeled, so there's plenty of space to run cable to put the network together.
: REQUIRED RESULT: The network must support speeds of up to 100 Mbps.
: OPTIONAL DESIRED RESULT: The network should be as secure as possible from electronic eavesdropping. To stay within TVBCA's budget, the network should also be as inexpensive as possible.
: PROPOSED SOLUTION The network staff suggests using a fiber-optic backbone to link all three buildings. Which results does this solution deliver? Why?

Answer:(b)
- The proposed solution to the problem delivers the required result. The network could support speeds up to 100Mbps, by using fiber-optic backbone. Fiber-optic cable could transmit data up to 1Gbps. But then, the TVBCA’a budget (inexpensive) could not support the proposed network solution, because fiber-optic costs expensive. If the company wishes to achieve the speed or rate of 100Mbps and is inexpensive at the same time, it is more practical for them to use Coaxial Thin Ethernet, which could achieve their desired speed and is not as expensive as fiber-optic.

3.) An advertising firm decides to install a network to link employees' computers together. The company plans to introduce some video teleconferencing software across the board and plans to use e-mail and database applications heavily. Because of the anticipated load on the network, you want it to be as fast as possible.
:RESULT REQUIRED: The network must operate at speeds of up 100 Mbps.
:OPTIONAL DESIRED RESULTS: The cabling should be as inexpensive as it can be. Also, since you have to do the work yourself, you want it to be easy to install.
:PROPOSED SOLUTION You suggests using category five(5) UTP and hubs to connect all the workstations. Which results does this required result and both of the optional desired results.

Answer:(a)
- The proposed solution delivers the required result and both of the optional desired result because the bandwidth of the category 5 UTP is up to 100 Mbps. And this is inexpensive and since that you are the one to work for it this can be easy to install.

4.)XYZ Corp's decides to bring mobile computing to each fields engineers. Each fields engineer is to be supplied with a laptop, a potable facts/printer, and some kinds of wireless transmission device.
:REQUIRED RESULT: Field engineers must be able to send e-mail to and received it from employees at the headquarters operation.
:OPTIONAL DESIRED RESULTS The wireless technology chosen should b as cheap as possible. It should also be secure from electronic eavesdropping.
:PROPOSED SOLUTION: The network manager recommends leasing a cellular link from GTA MobileNet for $2500 a month, plus air-time charged and encryption fees which results does this solution deliver?

Answer:(b)
- The proposed solution delivers the required result and only one of the two optional desired result because this technology is not cheap as possible and this can send E-mail and receive it from the other employees at have headquarter but the cost of these technology is expensive, it will pay $2500 a month, plus air time charges and encryption fees.

5.)TVBCA operates two buildings on either side of the Susquehanna River in Pennsylvania. one building is 17 stories tall, and the other is 15 stories; the two buildings have a clear line on sight between them. although a bridge crosses the river nearby . a local cable company quotes a price of $150 000 to acquire the right-of-way and to install a line between the two buildings. Suddenly, wireless options look very attractive.

:REQUIRED RESULT: Users on one LAN must be able to communicate with servers on the other LAN and vice-versa.
:OPTIONAL DESIRED RESULTS: The wireless connection should be secure from electronic eavesdropping. Because a transformer substation is next door to the 15-story building, the connection also must be resistant to electromagnetic interference.
:PROPOSE SOLUTION: Install a set of ten MBPS point-to-point infrared laser wireless bridges for communications between the two buildings. Which results the proposed solution deliver? Explain.

Answer:(c)
- Installing a set of 10 Mbps point-to-point, infrared laser wireless bridges for communication between the two buildings of TVBCA, could enable communication between servers of the two LAN’s in every building. But, this proposed network solution, could not guarantee the company, security from electronic eavesdropping. Wireless technology is very prone to hacking, especially if permission to connect to the network is not restricted; and because there is a transformer located nearby the 15 storey building, the proposed network solution, is not resistant to attenuations such as electromagnetic interference.

Chapter 1 CASE PROJECT

Question: #1
XYZ Corporation currently employs eight people but plans to hire 10 more in the next four months. users will work on multiple projects, and only those users assigned to any one project should have access to the project files. You're instructed to set-up the network to make it easy to mange and back-up. Would you choose a peer to peer , a server-based, or a combination network? Why?

Answer:
- I choose server-based network because the users need a security for their project files. It is said into the question #1 that only those users assigned to any one project should hve accesss to the project. It also makes the most sense for networks with 10 or more users or any networks where resources are used heavily. Is also centralized control,security, resource mangement, or back-up is desirable.

Question: #2
Widgets, Inc., hired you as productivity consultant. currently they employ six people who routinely exchange information via sneakernet. They want the cheapest possible solution and only minimal training for employees: Individual employees also must be able to control resources on their own machines. Would you choose a peer-to-peer, a server-based, or a combination network? Why?

Answer:
- I choose peer-to- peer network because it only includes no more than 10 users and the budget considerations are paramount. and the widgets, Inc., employ only six people. Peer-to-peer also network also works best for networks with 10 or fewer users, it is also inexpensive to purchase and operate, individual users control their own shared resources.

Question: #3
American Tool and die operates two machine shops, one in Towson, Maryland, and the other in Beltsville, Maryland. Thw company wants the two locations to share a single database, so that managers at each facility can exchange work orders and monitor inventory on demand. Individual users need some control over individual resources, choose a peer-to-peer , a server-bnased, or a combination network? Why?

Answer:
- I choose combination network because the machine shops need some control over individual resources, It incorporates both peer-to-peer and server-based capabilities. There are two locations so that, it should be needed to have a combined network.

Question: #4
What kind of specialized servers do you need to install at American Tool and die, based on the information presented in the previous Case Project?

Answer:
- Fax Servers is the one needed to install American tool and die, based on the information presented in the previous Case Project.