1. While troubleshooting a network connection problem for a co-worker, you discover the computer is querying a non-existent DNS server. What command-line utility can you use to assign the correct DNS server IP address? Is DNS using UDP or TCP?

Question

1.	While troubleshooting a network connection problem for a co-worker, you discover the computer is querying a non-existent DNS server. What command-line utility can you use to assign the correct DNS server IP address? Is DNS using UDP or TCP?

GPT 3.5 · Answer

The command-line utility that can be used to assign the correct DNS server IP address is "nslookup" or "ipconfig /dnsflush" to flush the DNS cache.

DNS primarily uses UDP (User Datagram Protocol) for communication. However, it can also use TCP (Transmission Control Protocol) for large queries or zone transfers.