MCQ Detailed View

The Application Layer is the topmost layer (Layer 7) of the OSI model. It allows users and software applications to access network services directly. This layer provides services like file transfers, email communication, and network management.

Some of the important services it supports include:

• File Transfer using FTP, TFTP protocols


• Email using SMTP, POP3, IMAP protocols


• Web Browsing via HTTP/HTTPS


• Network Monitoring using SNMP


• Remote Access using Telnet, SSH

The Application Layer doesn’t handle actual data transfer but manages user interaction and prepares data to be sent over the network using lower layers. It ensures the correct format, encoding, and communication between devices and software.

Key Functions:

• Initiates data transfer requests


• Provides user interface with the network


• Supports services and applications like email, file sharing, and browsing

Conclusion: The correct answer is Application Layer. It is responsible for enabling user-facing network services such as file transfer, emails, and managing devices over a network.