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Each PC or work station can be up from two thousand feet from the active hub. Each port of the

active hub will be electrically isolated and will not need terminators for unused ports.

Typically a LAN has a server node to provide certain services to the LAN users. In this case of

a small scale PC LAN, the server is attached to a laser printer, so that all users can share that

printer through the server. Another use of the server is that if the LAN users need to get some

updated files. Instead of copying to all the nodes each of them can copy / share from the server,

where only once those files can be loaded or updated.

The Network security structure would not be a very complicated. The Supervisor would be

granted full access to all the resources in the CIS program. Students who are a CIS major will

have read, copy and write capabilities for the classes they will attend. The Public accounts will

only have the right to be able to access the rights to Word Perfect, Excel, Power Point, etc. The

Faculty will also have rights to the classes with read, copy, write and send.

Networks are subject to hacking, or illegal access, so shared files and resources must be

protected. A network intruder could easedrop on packets being sent across network or send

fictitious messages. For important information, data encryption (scrambling data using

mathematical equations) renders captured packets unreadable to an intruder. This server will use

an authentication scheme to ensure that a request to read or write files or to use resources is from

a legitimate client (faculty or CIS majors) and not from an intruder. The system will have a

security measure of telling whether or not the user is a CIS major or not by given each CIS major

and faculty a code or password.. The CIS majors will be given a code in which they will have to

enter in every time he or she gets to the computer and wants information from a CIS class. Every

time the student enters in the code the computer will keep it in memory so if the same password

is entered somewhere else the person wil!

l not be allowed in. This station restricitions will keep students from going in and messing around

with the students information while that CIS student is working. There will be disk restrictions to

assure that storage space is evenly allocated. The CIS users will also have to change the

password every now and then to keep confidentiality of his or her passwords. This will put an

account to have an expiration date to it so that the user will have to change his or her password

as the semester goes on to insure the security of their account.

Under no circumstance should an administrator put an entire system at risk for the

convenience of a few users. Certain measures and precautions should be implemented to ensure

that the network will operate effectively and effeciently.

Another major concern when designing a system is to anticipate the addition of more

workstations and eventually more users. By considering this now many problems can be solved

even before they exist. If there is room allotted for expansion in the beginning, then actually

implementing the new ideas and hardware should be simple. Assumptions about how large

the system will actually get and how many users it will accomadate are very serious issues that

need to be addressed in the utmost fashion. These questions require serious answers that if not

dealt with could destroy a system.

Another key issue that needs to be addressed is who will be issued an account on the system.

Certainly each CIS faculty member will have his or her own personal account. In these accounts

some items such as personal research materials and grades will reside. Then there is the matter of

the individual CIS classes and individual CIS students. Logically each class will have a separate

account because the information in each account will be different (applications etc.). The main

point of concern is the applications involved with each class. Using Visual Basic and Visual/IFPS

Plus, having a COBOL compiler to run your programs on and so on.

CIS students will have their own personal account. A space will reserved for them to

execute e-mail and other personal things. They will need to have a good understanding of the

network to be able change their

directory to the class that they need to locate and do their work in. Each faculty member will

have their own account as well. They will be able to send e-mail to students and also put

homework in the accounts of the classes that they teach. Other faculty members will not have

access to the server. As stated before the main purpose of the server is to deliver CIS

information only and for the CIS discipline only.

The main points of concern when dealing with the printer configuration are reliability and

accessibility. Reliability is centered around quality and effeciency. Top quality network printers

are expensive but sometimes are not the best choice. Speed of output, such as papers per

minute, play a big role in choosing a network printer. Printers that are easy to get to and easy to

service are a key to a successful network. I personally can not stand to walk into a lab and have

to hunt where the printers are and have to wait for someone to remove a jammed paper. The lab

on the second floor of the Belk building is a good example. An excellent example of a good

configuration is in Forsyth. The

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