Which statement about the Application layer is true?

Which statement about the Application layer is true?

• A. HTTP is an Application layer protocol.
• B. IP is an Application layer protocol.
• C. TCP is an Application layer protocol.
• D. Ethernet is an Application layer protocol.

Answer: (A)

The Application layer provides protocols that support software-to-software communication over the network. HTTP fits here because it defines how a web client and server exchange requests and responses for web resources, and it operates at the highest level of the protocol stack, relying on lower layers (like TCP for transport and IP for addressing/routing). The other options place the protocols in lower layers: IP is a Network layer protocol, TCP is a Transport layer protocol, and Ethernet is a Data Link/Physical layer technology used inside LANs. So, the statement that HTTP is an Application layer protocol is true.

The Application layer provides protocols that support software-to-software communication over the network. HTTP fits here because it defines how a web client and server exchange requests and responses for web resources, and it operates at the highest level of the protocol stack, relying on lower layers (like TCP for transport and IP for addressing/routing). The other options place the protocols in lower layers: IP is a Network layer protocol, TCP is a Transport layer protocol, and Ethernet is a Data Link/Physical layer technology used inside LANs. So, the statement that HTTP is an Application layer protocol is true.