Introduction A company wants to set up a new branch office in KL.It is expected

ID: 3597511 • Letter: I

Question

Introduction A company wants to set up a new branch office in KL.It is expected that 20 staff members will be allocated in this new building. The new building will have only one floor. All the staffs will be allocated in the same floor The Headquarter is located in Pinang, which is about 350km away from the new office. Network connection is required for new office's staff to access the centralized database located in headquarter. All staff will also require Internet access for their daily operation. Most of the staff will be provided with dedicated desktop computer. However, there will be few staffs that will be using Laptop computer and mobile devices. They will also need to access the company computer network. To save costs, all staffs will be sharing one Internet connection. They will also share one printer and one Photostat machine is they need to print or copy document. Company telephone service wl be using computer network for all internal calls within the company and only using the PSTN service for external calls

Explanation / Answer

Task 1

Following network components are required:

TASK 2

PSTN

Leased Lines

PBX

Dedicated connection between premises and local exchange

Dedicated connection in exchange for a monthly rent(lease)

Not a dedicated connection. Service runs on provider’s server

Fixed bandwidth

Variable bandwidth

Identical upload/download speeds

Generally downloading speed are higher

Not subjected to contention with other users

Not subject to contention with other users

Subject to contention with other users

Private telephone number

Not a private telephone number

Lines dedicated to one use at a time

Simultaneous calls supported

Low bandwidth utilization

Moderate utilization of bandwidth

High utilization of bandwidth

Cabling and maintenance cost expensive

Hassle free installation

Analog lines

Mostly digital

Digital lines

Used in the public sector

Used in the private sector

Uses open-standard protocols between switches and telephones

Uses proprietary protocols to control telephones

Interconnects with other PSTN switches, PBXs, and telephones

Interconnects remote branch subsystems and telephones

Businesses w/ minimal local & long distance communication needs.

Businesses that have geographically-dispersed sites.

In this network PBX could be suitable as this branch office is remotely located approx 350km from headquarters. Also many interconnected computers are using internet simultaneously, PBX could be more scalable and robust in such scenarios than PSTN or leased lines. PBX also provides multiple extension to a single phone line e.g. a single number can be shared among multiple offices or employees by providing it an extension.

TASK 3

Twisted pair cable

Coaxial cable

Fiber optic cable

Twisted copper wire covered in plastic insulation

single strand, heavy gauge, shielded wire

Signals are light pulses. The wire is a 10–100 m strand of glass, silicon, or plastic.

Low cost

Expensive

Easy to install

Hard to install

Capable of high speeds

Speeds upto 10mbps

Capable to very hard speed

High attenuation

Medium attenuation

Low attenuation

In this office network coaxial cables can be a good solution. Since fiber optic cables require lot of setup and are expensive but twisted pair would not conform to the specifications of this network. Thus an optimum solution would be to use coaxial cable.

TASK 4

Network resources can be shared in two ways: client-server and peer-to-peer. In client-server it’s the standard procedure which has to be followed in which if a employee wants to access the resource such as printer it will request for one and if its busy he has to wait otherwise access will be granted to client and he can initiate the operation remotely. In this case printer will have a service process to monitor the function. In peer-to-peer connections, a resource can be accessed simultaneously but there are some policies enforcing atomicity and security of this communication. Either ways require abiding some constraints such as:

Compatibility between client and server configuration

PSTN

Leased Lines

PBX

Dedicated connection between premises and local exchange

Dedicated connection in exchange for a monthly rent(lease)

Not a dedicated connection. Service runs on provider’s server

Fixed bandwidth

Variable bandwidth

Identical upload/download speeds

Generally downloading speed are higher

Not subjected to contention with other users

Not subject to contention with other users

Subject to contention with other users

Private telephone number

Not a private telephone number

Lines dedicated to one use at a time

Simultaneous calls supported

Low bandwidth utilization

Moderate utilization of bandwidth

High utilization of bandwidth

Cabling and maintenance cost expensive

Hassle free installation

Analog lines

Mostly digital

Digital lines

Used in the public sector

Used in the private sector

Uses open-standard protocols between switches and telephones

Uses proprietary protocols to control telephones

Interconnects with other PSTN switches, PBXs, and telephones

Interconnects remote branch subsystems and telephones

Businesses w/ minimal local & long distance communication needs.

Businesses that have geographically-dispersed sites.

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Introduction A company wants to set up a new branch office in KL.It is expected

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Introduction A company wants to set up a new branch office in KL.It is expected

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