Well-known protocols

There are a number of well-known protocols that we use in our environment that we need to be aware of. For starters, when we browse the internet, we are in fact use the HTTP protocol in order to view a web page. Additionally, when we are copying a file from a server and providing authentication; in the backend, we are using some type of FTP protocol. Likewise, when we type out a URL, we are in fact using DNS for name resolution. As we can see, we are using a number of protocols in our environments. Some well-known protocols and their respective port numbers are described next.

TCP

Transmission Control Protocol (TCP) is a connection-oriented protocol that offers a number of services, including error checking...