which of the following protocols uses both tcp and udp | Examsbook

1464

Q: Which of the following protocols uses both TCP and UDP?

1
FTP
2
SMTP
3
Telnet
4
DNS

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Answer : 4. "DNS"
Explanation :
Answer: D) DNS Explanation: DNS uses TCP for zone exchanges between servers and UDP when a client is trying to resolve a hostname to an IP address.

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