Question 1 (1 point) is the rate at which bits are transferred between two end systems. 1) Bandwidth 2) Throughput 3) Delay 4) Link capacity Question 2 (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 five image files in addition to text, how many TCP connections should be made to download the entire content in the html file? 1) one 2) two 3) three 4) six Question 3 (1 point) DNS is an) layer protocol. 1) application 2) transport 3) network 4) database Question 4 (1 point) If the local name server cannot resolve the given host name in a query, it first contacts the server. 1) TLD 2) local DNS 3) authoritative DNS 4) root DNS