The Destination ports have standard ports such as the following except? A. HTTP B. FTP C. Telnet D. DNS

The question is asking which of the following is not a standard destination port. The options are:

A. HTTP B. FTP C. Telnet D. DNS

To answer this question, we need to know what each of these acronyms stands for and what they are used for:

A. HTTP (Hypertext Transfer Protocol) - This is a protocol used for transmitting hypertext over the Internet. It uses port 80 for communication.

B. FTP (File Transfer Protocol) - This is a standard network protocol used for the transfer of computer files between a client and server on a computer network. It uses ports 20 and 21 for communication.

C. Telnet - This is a protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. It uses port 23 for communication.

D. DNS (Domain Name System) - This is a hierarchical and decentralized naming system for computers, services, or other resources connected to the Internet or a private network. It uses port 53 for communication.

All of the above options (HTTP, FTP, Telnet, DNS) are standard destination ports. Therefore, the question seems to be incorrect as all the options given are standard ports.