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The correct answer is C.

OBJ-2.1: The user datagram protocol (UIDP) is a protocol in the TCP/IP suite that operates at the transport layer to provide connectionless, non-guaranteed communication with no sequencing or flow control. UDP is faster than TCP, but it does not provide reliable delivery of the packets. The dynamic host control protocol (DHCP) is a protocol used to allocate IP addresses to a host when it joins a network. DHCP utilizes UDP ports 67 and 68. The simple mail transfer protocol (SMTP) is the protocol used to send mail between hosts on the Internet using TCP port 25. Secure shell (SSH) is the protocol used for remote administration and file copying using TCP port 22. SSH is considered secure since it uses authenticated and encrypted sessions for communication. The hypertext transfer protocol secure (HTTPS) is a secure protocol used to provide web content to browsers using SSL/TLS encryption over TCP port 443.

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