You are working as a network engineer in an IT company, you have been assigned to design, implement a network infrastructure for a client company qcheck.co.uk. The company consist of 3 department Finance, Sales and engineers users. Each and every department must not be able to access any other department.
The network consist of 2 Servers, for which web, email combined in one server and dns server, all servers are shared between all users. The distribution of workstation shown in table 1, describe the requirement of each department.
While discussion the requirement, the IT director hinted that there will be a need to implement a wireless network, to allow staff to use their own device such as smartphone to access the internet, using IoT devices to be utilised to monitor server rooms etc..

Department Devices
Finance 9 Computer & Printer
Sales 40 Computers & Printer
Engineers 65 computers & printer
dns/web/email &
File server 2 Servers
Branch 10 Computer & printer
Table 1: workstation and server distribution and requirements

Department of Information Technology Page 3 of 6
A small branch in York is established with 10 users, yet connectivity to the main branch is essential, and required with minimal cost, the company as well planning to expand and open many other branches across the country and Europe.
The IT director emphasised on scalability, redundancy and availability; hence you are required to provide a complete network infrastructure design and implementation, the company will be using private IP address 192.168.90.0/24 for the main branch and private IP address 192.168.99.0/24 for
the branch, the WAN link IP address is 77.88.99.160/28.
Based on requirements given in above scenario analyse and examine suitable network

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