COMPUTER NETWORKS(practical 8)

1.  What is DNS?How it is significant in real world.
2.  Explain about file transfer protocol in brief.
3.  What are the component of DNS explain in brief.
4.  What is email ? What are the function of email ? explain component of email ?
5.  Write full form of following and explain in brief
      1)  SMTP
      2)  IMAP4
      3)  MIME
      4)  POP3