ThunderPost is a renowned courier, parcel and express mail service in West Malaysia. Due to its successful postal related service, ThunderPost has a huge number of customers. The management of the company has decided to expand its service in West Malaysia to reach up to East Malaysia (Sabah and Sarawak).

As the Senior Network Engineer in ThunderPost, you are required to prepare a report on the networking infrastructure between ThunderPosts headquarters and its 16 branches located in each state (total of 13) and federal territory (total of 3).

• Propose a solution for the WAN network infrastructure of the companys stations (all 16 branches and one headquarters are to be connected together). It is important to justify what you have proposed. Example of proposed solutions are (but not restricted to):

1. Networking devices (e.g. core router, L3 switch)
2. Connections (e.g. T1, X.25, ATM, SONET, MPLS)
3. Network services (e.g. 99.99% network connectivity, redundant connectivity, undisturbed high-speed access, traffic shaping, load balancing, backup sites)