ABC Corp runs an e-commerce website that suddenly becomes

unresponsive. The IT team notices that the website is receiving an unusually

high number of requests from a single IP address, overwhelming the server and

preventing legitimate users from accessing the site. Upon further

investigation, they suspect a cyberattack. What type of attack is ABC Corp

experiencing, and what is the best immediate action to mitigate it?

What is the role of MAC (Media Access Control)?

You are designing a video conferencing system that needs to support real-time video and audio with minimal latency. Which protocol would you use to handle media delivery between users?

What is the main difference between MAC addressing and IP addressing in the context of the Data Link Layer?

Which protocol is commonly used to set up, manage, and terminate multimedia sessions such as VoIP calls?

(i) A network switch has an MTBF of 20,000 hours and an MTTR of 5 hours. What is the availability of the switch?   (3 Marks)

(ii)  An industrial robot has an MTBF of 15,000 hours and an MTTR of 3 hours. How much downtime per year is expected?   (1 Marks)

Match the following with the correct choice:

Choose the appropriate primary function of an access point in a wireless network?

Why would a network engineer include latency and bandwidth labels on a wide area connectivity map?