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- What is Application Layer? Explain.
 - Write a note on FTP. Also write its advantage and disadvantage.
 - How does FTP work? Differentiate between passive and active FTP.
 - Write a note on HTTP. Also write its advantage and disadvantage.
 - Write a note on email.
 - Explain about e-mail architecture and service.
 - Classify the e-mail program.
 - Explain different basic functions that e-mail system supports.
 - Explain the email architecture and services.
 - Write a note on SMTP. Also Explain the function of SMTP.
 - Explain the address scheme used by SMTP.
 - Explain how does e-mail reaches to destination. Explain in brief SMTP emphasizing the role and function of User Agent (UA) and Mail Transfer Agent(MTA).
 - Explain the mail access protocol.
 - Compare TCP and RTP. Are both doing same thing.
 - Write the difference between IMAP and POP. Why they are uses?
 - Explain the Multipurpose Internet Mail Extension(MIME). How does MIME enhance SMTP.
 - Explain how SMTP can handle transfer of videos and images? Also, explain the advantages of IMAP4 over POP3 mail access protocols.
 - What is digital signature ? Explain its working.
 - What is Telnet? Explain.
 - Write a short note on Voice over IP.
 - What are the problems for full implementation of voice over IP? Do you think we will stop using the telephone network very soon?
 - Explain the simple network management protocol. List its various components and briefly explain each.
 - What is the difference between an active web document and dynamic web page? Also, explain the role of CGI(Common Gateway Interface).
 - Write a short note on DNS(Domain Name System).
 - Write a short note on DNS(Domain Name System).Explain the concept of virtual terminal.
 - What is MPEG. Explain its three types of frame.
 - What is PING? Explain.
 - What is USENET? Briefly explain.