There are two specified VPN protocols. Describe the tunneling technique used to establish Virtual Private Networks (VPNs). What are tunneling's disadvantages?

Names of two different virtual private network (VPN) protocols should be provided. It is important to describe how tunneling is used to create virtual private networks. What are some of the disadvantages of tunneling?

In this section, the distinction between network applications and application layer protocols is broken down into its component elements in greater detail.

There are two specified VPN protocols. Describe the tunneling technique used to establish Virtual Private Networks (VPNs). What are tunneling's disadvantages?

To answer this issue, why do HTTP, SMTP, and POP3 use TCP as the transport layer protocol rather than UDP?

Despite the fact that FTP requires independent verification of successful file delivery, the protocol does not offer a mechanism for servers to independently monitor this information on their own. The success of the delivery is dependent on the File Transfer Protocol (FTP), which is used by the TCP/IP protocols of the transport layer.