Ms. Roseanne Park, the IT manager at Blackpink Law Firm (BLF), is responsible for updating the network to use new technologies. She has two network analysts working for her that handle the routers, switches, clients, servers, and media for the company. The company is understaffed, and the analysts are overworked. There is no network management station monitoring the network. The firm has two locations, one in Johor Baharu (JB) and one in Kuala Lumpur (KL), specializing in corporation legalities. A Frame-Relay WAN link exists between the sites. Each office has approximately 96 workstations. The company expects only 4 percent network traffic growth in the next two years. The current network as shown in Figure 1, was built in the early 2000 s. Each office has two Fast Ethernet switches with stations attached. Currently, the internal servers are located on the 2nd floor in KL and JB offices. A router in KL provides connectivity to the JB office and the Internet via a local ISP. The current routing protocol is RIP. The WAN link currently has a 512k bit rate and runs at an average of 85 percent utilization with occasional bursts. The Ethernet segments currently run at an average of 65 percent utilization; occasionally, network utilization will burst to 80 percent utilization. Users complain of slow response time throughout the day. The firm uses the Microsoft Office suite of applications because it does a lot of word processing and exchanging documents. E-mail and HTTP are highly used as well and lately due to the pandemic, some of the users are using video conferencing and online meeting applications. IP is the only protocol routed on the network. The firm recently upgraded its workstations and is now equipped with 10/100/1000 network interface cards. Ms. Roseanne would like a proposal to upgrade the network to Gigabit Ethernet. She mentioned that a previous network audit uncovered security issues from access to the Internet and they also need to add another 48PCs on the 3rd and 4th floor at both offices. Figure 1: BLF Campus Network Wiring 1. Briefly describe the network health of the Ethernet and WAN segments? (6 marks) 2. Explain your recommendation to improve the LAN utilization problem? (4 marks) 3. Briefly describe three security measures that can be used to DoS attacks that are directed at exposed hosts within the Internet module. (6 marks) 4. State the routing protocol that you would recommend to BLF. Explain your reason. (6 marks) 5. State the typical speeds for the building access, building distribution, and campus backbone? Explain why. (4 Marks)
