CSCI 434 please help

Question 8 (1 point) A standard protocol commonly defines the following except: 1) the format of messages exchanged 2) the order of messages exchanged 3) the order of routers along the path 4) the action taken on the packet transmission Question 9 (1 point) Suppose a client downloads "index.html from a server using persistent HTTP with pipelining (without parallel connections). If the "index.html" file contains three image files in addition to text, how many RTTs are needed to download the entire content in the html file? 1) three 2) four 3) six 4) eight Question 10 (1 point) To obtain the corresponding IP address from a host name, what type of DNS records will be looked up? 1) type=A 2) type=NS 3) type=CNAME 4) type=MX Question 11 (1 point) Compared to other delay sources, depending on network congestion level. may be considerably variable over time 1) processing delay 2) queuing delay 3) transmission delay 4) propagation delay