Question

When a DNS server communicates a name resolution query to another DNS server, what type of datagram is used and over what port?

Answer 1

DNS servers use UDP datagrams on port 53 to communicate name resolution queries.

Step-by-step explanation:

When a DNS server communicates a name resolution query to another DNS server, it uses a datagram called UDP (User Datagram Protocol). UDP is a connectionless protocol that provides a simple and efficient way to transport data packets over the network. The DNS server sends the query using UDP on port 53.