Q: Which of these protocols is used by DNS?
or
Q: Of these protocols, which one does DNS use?
- User Datagram Protocol (UDP)
- Hypertext Transfer Protocol (HTTP)
- Dynamic Host Configuration Protocol (DHCP)
- IP (Internet Protocol)
Explanation: UDP, which stands for User Datagram Protocol, is the protocol that the Domain Name System (DNS) uses. Because it is a connectionless protocol, the Domain Name System (DNS) generally utilizes UDP on port 53 for its queries and replies. This is because UDP is quicker than other protocols for the brief queries and responses that are normally necessary for DNS lookups. On the other hand, Domain Name System (DNS) may also employ Transmission Control Protocol (TCP) for certain jobs that need more reliable transmission. These duties include zone transfers and answers that exceed the maximum size of a UDP packet. However, the most important protocol is still UDP.
