Question 2: 'Network planning and design is an iterative process as it is aiming at ensuring that the newly designed network or services meet the user and operator needs'. Based on the previous statement answer the following: a) As a network manager who wants to adopt the Hierarchical internetworking model which is proposed by Cisco in his network, discuss what advantages this approach has over the flat network design model. 1 of 4 /continued b) A small drafting company is trying to decide whether to expand their network infrastructure. Their current network technician has determined that too much traffic from all locations is congesting the network. She believes that if the network were expand an increase in traffic could potentially create more problems. She contacts you to recommend a technique to filter traffic and control the broadcasts that are currently on the network. What technique you will recommend and why c) You have been assigned the responsibility of adding a new vendor's components with its own Network Management System (NMS) to an existing network managed by a different NMS. Identify the set of functions that you need to do to fulfil your task.