Need an expert guide for this task. Question 5,6,7 and 8

The scenario The majority of businesses are small and most of the business networks are also small. While a small network design is usually simple, a large network requires an IT department to maintain, secure, and troubleshoot network devices and to protect organizational data. CS2553B Company is a new company specialized in networking services. This company is considered as a small company, thus involves a small network. As a newly recruited networking engineer in CS2553B Company, you were assigned for several tasks. 5. 6. 7. After a year, due to its performance services, CS2553B has expand, thus the network is now become larger. As a network engineer, you need to plan for this expansion to ensure the scalability of CS2553B's network. Suggest the important elements to ensure for the network scalability. Another important task for you as network engineer is to ensure that the network is secure. Explain to your manager on how you plan to analyze and monitor the network utilization in CS2553B. Your manager was worried about some issues on DNS, latency and connection. He asked you to explain the mechanisms or commands used in troubleshooting these issues. Present to him the mechanisms and commands used. 8