DNS system main duty is converting hostnames to IP addresses. While DNS resolving hostnames its need to interact with other DNS servers as well. Assume that your web browser want to resolve www.wikipedia.org address from your local DNS server and this hostname not cached. Give and explain all steps that needed by your local DNS server while resolving this hostname. 7 A B 1 2 Dynamic, Adaptive Streaming over HTTP (DASH) is one of the popular method which is used for Multimedia streaming. Explain how DASH working on Client and Server side? 7 50 A B I % 3 Two primary transport layer protocols can be chosen by network application developers. One of them used for reliable data communication and another one is unreliable. Give these transport layer protocol names and give three application usage areas of reliable protocol. 1 8 51