DQ Cisco

Discuss how the protocols DNS, DHCP, FTP, and SMTP work and discuss their function on a network. Explain, with examples (if possible), the role of each protocol on a network. Also, what are the differences, if any, between the POP and IMAP protocols?

Of all the protocols mentioned above and you describe, which one do you find to be most important and why? What is the SNMP protocol?