3.Where does application layer processing occur, according to the text, and what is an example of an application layer protocol that is often combined with another?
For example: TLS (Transport Layer Security) is commoly combined with HTTP (Hyper Text Transfer Protocol) to form HTTPS (Hyper Text Transfer Protocol Secure).
The application layer is responsible for providing network services directly to end-users or applications. It interacts with software applications to provide communication services, including file transfers, email, remote file access, and more.
HTTPS is a secure version of HTTP that encrypts the data exchanged between the web server and the client, providing a higher level of security for online transactions and sensitive information.