In this lab, you will communicate with a DNS server by sending a DNS query using the UDP transport protocol. DNS queries and responses are very small and do not require the overhead of TCP. UDP is connectionless and does not require a session setup as does TCP.
Your PC DNS server query and the DNS server response make use of the User Datagram Protocol (UDP) as the transport layer protocol. When you type a website URL into your browser, your PC performs a DNS query to the DNS server IP address. DNS is a distributed network of servers that translates user-friendly domain names like to an IP address. If you have ever used the internet, you have used the Domain Name System (DNS). Part 3: Analyze Captured DNS or UDP Packets Background / Scenario Part 2: Use Wireshark to Capture DNS Queries and Responses
Part 1: Record the IP Configuration Information of a PC Instructor Note: Red font color or gray highlights indicate text that appears in the instructor copy only. 9.2.3.5 Lab – Using Wireshark to Examine a UDP DNS Capture (Instructor Version)
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