Functions of Application Layer
- Verifies the existence of necessary communication interfaces, such as whether the sender's computer has an Ethernet or Wi-Fi interface
- Confirms that both ends are in agreement on error recovery processes, data integrity, and privacy
- Establishes the protocol and data syntax rules at the receiving end
- When appropriate enable device authentication between devices for an additional layer of network security.
Which of the Following Is an Application Layer Service? (a) File transfer(b) Remote login(c) Mail service(d) All of the above
File transmission, remote login, and mail service are examples of application layer services. Application-level services, such as file transfer or print spooling, as well as network-aware programs like email, are the two forms of software that give users access to the network at the application layer.