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Which protocol makes use of both UDP and TCP?
Telnet
FTP
DNS
POP3
NTP
HTTPS
DNS primarily uses the User Datagram Protocol (UDP) on port number 53 to serve requests. DNS queries consist of a single UDP request from the client followed by a single UDP reply from the server. The Transmission Control Protocol (TCP) is used when the response data size exceeds 512 bytes, or for tasks such as zone transfers. Some resolver implementations use TCP for all queries. - https://en.wikipedia.org/wiki/DomainNameSystem
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