Which of the following applications utilize UDP services? (Choose three.)

The correct choice highlights applications that utilize User Datagram Protocol (UDP) services effectively, emphasizing the characteristics of each protocol.

Trivial File Transfer Protocol (TFTP), Simple Network Management Protocol (SNMP), and Domain Name System (DNS) are all designed to benefit from the features that UDP offers. TFTP is lightweight and used for transferring files without the overhead of a connection-oriented protocol, making it ideal for scenarios where quick transfer is necessary and reliability can be sacrificed. SNMP, used for monitoring and managing devices on IP networks, employs UDP to allow for low-latency message delivery, important for real-time management tasks. DNS relies on UDP to resolve domain names to IP addresses quickly, with the preference for speed over the reliability of guaranteed delivery, since resolution failures can simply be retried.

In contrast, the other options include protocols such as HTTP, FTP, SMTP, Telnet, and HTTPS, which are built on Transmission Control Protocol (TCP). These protocols require reliable, ordered, and error-checked delivery, which TCP provides, making them unsuitable examples of applications that primarily utilize UDP services. This distinction highlights the specific use cases and operational necessities behind the choice of using UDP versus TCP for different applications.