Unit – 6

Application Layer 6L

Q1) What is the purpose of Domain Name System?

Q2) Discuss the three main division of the domain name space.

Q3) Discuss the TCP connections needed in FTP.

Q4) Discuss the basic model of FTP.

Q5) What is the function of SMTP?

Q6) What is the difference between a user agent (UA) and a mail transfer agent?

Q7) How does MIME enhance SMTP?

Q8) Why is an application such as POP needed for electronic messaging?

Q9) Give the format of HTTP request message.

Q10) Give the format of HTTP response message.

Q11) What is the maximum size of data that the application layer can pass on to the TCP layer below?

Q12) Which of the following protocol is used for transferring electronic mail messages from one machine to another?

Q13) Which DNS client maps an address to a name or a name to an address especially when required by a host?

Q14) Which application-level protocol plays a crucial role in carrying out the data definition and manipulation in addition to X-500 features?

Q15) Which URL method of HTTP performs similar function as that of PUT method only with an exception of request comprising a list of differences that exhibit the necessity to get implemented in the existing file?