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I am struggling with the following question?

I am struggling with the following question?

WLA is a small company with 18 full-time employees. The company is fully licensed by the Health and Safety Executive to work with Asbestos Containing Materials. Since its formation in July 2004, the company has grown significantly and now offers a level of service able to rival any organisation operating in the Asbestos Industry.

All employees are fully trained to the highest standards and are supported by one of the most respected management teams in the industry. All major contracts undertaken by Asbestos Business Contractors are allocated a designated Contracts Manager and Asbestos Administrator to ensure a level of service far superior to that offered by the competition.

The company is divided into three divisions, each of which provides specialist services with a motivated, dedicated workforce. WLA originally offered an Asbestos Removal service which was able to undertake both domestic contracts and large-scale commercial contracts when required. After continual growth and investment, two complimentary divisions were added to the portfolio in order to cover Asbestos Surveying and Asbestos Awareness Training requirements.

All staff are located in the head office in Ormskirk. A sketch plan of the Office space in Ormskirk is shown below. The IT provision has developed in an ad-hoc way as the company has grown and currently they have a mixture of desktop and laptop PCs connected using the structured cabling in a peer-to-peer network.   All data is stored on shared folders on one of the PCs and is backed up each day to an external hard drive through a USB port. The PCs are of varying ages, but mostly over 3 years and running Windows 7.

The network is connected to the Internet via an ADSL router/modem from BT. All office staff use Microsoft Office 2003 and Outlook for email. The email is hosted by their ISP, and email messages are downloaded to personal email folders located on the shared drive of one of the PCs. Some staff also use Visio and the accounts department use Sage accounts and Sage Payroll.

The company have experienced performance issues and have decided to invest in a replacement network. They have called in external consultants to assist them.

Your terms of reference are:

You are expected to submit a network design report As part of the report you are expected to achieve the following outcomes:

·        Critically evaluate the requirements of the given network scenario and define a network problem with the given network scenario.

·        Identify appropriate LAN, WAN and security solutions that may address the identified problem.

·        Design an appropriate LAN/WAN infrastructure as a solution to the given problem. You must provide logical network diagrams showing how your networking solution might provide the required services and connections. This may be a one or more diagram as you see fit. Any suitable drawing package can be used and you will not be graded on the drawings themselves; just the network design.

·        For the network designed, devise an appropriate address allocation scheme and explain how these will be implemented. You are expected to include both static and dynamic addresses in your scheme. Your addressing scheme should be supported by appropriate justifications.

·        Offer an appropriate network security solution to the given network scenario.

·        Identify how the emerging wireless and mobile technologies may impact your network solution.

especially the structure of the network diagram and how to maybe include A VLA


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