1. Explain the purpose of Domain Name System?
2. Describe the three main division of the domain name space.
3. Describe the TCP connections required in FTP.
4. Describe the basic model of FTP.
5. Describe the function of SMTP?
6. Write down the difference between a user agent (UA) and a mail transfer agent?
7. Describe how does MIME improve SMTP?
8. Describe why the application like POP is required for electronic messaging?
9. Write down the format of HTTP request message. Explain in detail.
10. Write down the format of HTTP response message.