QUESTION 9 8 points CLO1.1 What does an application layer protocol specify? choose all correct answers [8] types of messages exchanged rules for messages exchange between processes O application requirements message fields structure/format message fields meanings (semantics) o types of preferred users for the application application coding and user interface o the required level of reliability, loss and delay tolerance O XML document format and version QUESTION 10 6 points CLO3.1 What is true about Content distribution network (CDN)? choose all that apply [8] O A CDN is a very large ISP network that has international coverage. The distributed architecture of CDN enables single point of failure. Enter deep approach pushes CDN servers toward access networks, closer to users. The distributed architecture of CDN enables fast and scalable delivery of contents to many users spread around that geographic region. Bring home approach uses uses larger clusters of servers and pushes them toward access networks, closer to users. A CDN is a group of content servers distributed over wide geographical region