ITS 510Case Study

Group Members

Md. Mahabubur RahamanRackib JamanMarshal RichardTushan BaraiMashook Mujib Chowdhury

Introduction XYZ CompanyThis is a fictitious case example of XYZ

company, that shows how a company might build a corporate network from scratch utilizing the internet.(Basically benefits of the internet)

Function of TelecommunicationVisualization 1. Transmitting at the whopping speed of terabit

over fiber optic cable.2. Twisted pair phone line coming into business as

straw at a operating speed DSL. Competitive Local Exchange Carrier’s

(CLEC’s) CLEC’s bring new connection system in 1990’s;

such as cable modem, optical fiber, wireless, satellite and faster wire line.

Internet & TelecommunicationInternet actually started its journey in 1990’s

by US Department of Defense for their ARPANET

Because of constant technological change managers can’t concentrate on their strategy

In late 90’s the page of internet became slower, so managers get much time to use internet on their operation

Internet’s AttributesUbiquity (everywhere at once)ReliabilityScalability

This norms makes today's life end to end IP network

XYZ CompanyXYZ Company which makes and sells widgets

in the process of installing a corporate network.

CTO has to make a lots of decisionThat’s why he wants to introduce the Internet

has a heart of XYZ’s corporate operations

Network OptionsAn intranet for use by employeesAn extranet for use by suppliers and some

large customersThe Internet as the all important central

public network

He also creates computer based system where clients and employees make a request from other computers which responded by server computers

Serving remote usersEvery PC will be outfitted with a network

interface card (NIC) that lets it talk to the network.

XYZ has four choices of communications wiring: i.Twisted pair(the standard telephone line) ii.Coaxial Cable (like cable TV) iii.Fiber optic(glass fiber that carries signals

via light pulse, backbone networks) iv. Wireless

Serving remote users(Contd.)For employees working from computers in

their homes, who need to transmit larger and larger files such as PowerPoint and presentation, the CTO could choose,

DSL Modems Cable Modems

Serving remote users(Contd.)

Finally they decide to connect these remote users to the corporate network and provide the speed and security they need. They have company supplied laptops and PDAs.

Serving local usersIn the office, all the computers and

telephones will be connected directly to an always on LAN.

The various LANs in XYZ’s offices will use three types of computers to route traffic:

i. Hubs are repeaters ii. Switcher are smarter iii. Routers are smarter

Other’s networkCTO wants to introduce Ethernet for sharing

videos and multimedia with employees at a specific time in greater speed.

LAN is always connected with Intranet which is protected from outside Firewall

It means “ A server lets email but doesn’t permit access to application code”

It is only accessible by the employees with their given protected password and ID.

Intranet –Communicating between officesTo help XYZ employees communicate

between sites using WAN, the CTO set up a high speed asynchronous transfer mode (ATM)-up to 622mbps. ATM is used by telephone companies for their network backbones. However, due to the high cost of ATM long distance bandwidth, the CTO might not be able to afford it.

Intranet –Communicating between offices (contd.)Gigabit Ethernet which operates at speed of

1gbps (10⁹bit per second), it has been outselling ATM because it is less costly.

Network AdvantagesCommunicationShared peripheralsShared dataFlexible accessControl of user access rightsCentralized administrationSimultaneous access to the Internet

Network DisadvantagesAccidental deletionDeliberate damageUnauthorized access

Recommendations

Thanks for being with us.

Any Questions

?