Application Layer Protocols

Consider the resolution of the domain name www.gate.org.in by a DNS resolver. Assume that no resource records are cached anywhere across the DNS servers and that iterative query mechanism is used in the resolution. The number of DNS query-response pairs involved in completely resolving the domain name is .

Assume that you have made a request for a web page through your web browser to a web server. Initially the browser cache is empty. Further, the browser is configured to send HTTP requests in non-persistent mode. The web page contains text and five very small images.The minimum number of TCP connections required to display the web page completely in your browser is__________.

Which of the following protocol pairs can be used to send and retrieve e-mails (in that order)?

What is WPA?

Which protocol suite designed by IETF to provide security for a packet at the Internet layer?

Which of the following protocol is used for transferring electronic mail messages from one machine to another?

When a DNS server accepts and uses incorrect information from a host that has no authority giving that information, then it is called

Identify the correct sequence in which the following packets are transmitted on the network by a host when a browser requests a webpage from a remote server,assuming that the host has just been restarted.

Which of the following is/are example(s) of stateful application layer protocols?
(i) HTTP
(ii) FTP
(iii) TCP
(iv) POP3

Which statement is false?