Which layer corresponds to 'network' in the described layer scheme?

Which layer corresponds to 'network' in the described layer scheme?

• A. 6 - Presentation
• B. 3 - Network
• C. 8 - User
• D. 4 - Transport

Answer: (B)

The layer being tested is the one that handles routing and forwarding packets between different networks. That means it provides logical addressing and path determination to move data from a source to a destination across multiple networks. In the described scheme, this is the layer that corresponds to the network function, so it’s the correct match for determining how inter-network delivery is managed. Data representation and formatting, encryption, and compression live in the presentation layer, not in the network layer. The transport layer focuses on end-to-end delivery between hosts, including reliability and flow control, which is different from routing across networks. The topmost or user-related layer handles user-facing interactions, not the mechanics of moving packets through networks.

The layer being tested is the one that handles routing and forwarding packets between different networks. That means it provides logical addressing and path determination to move data from a source to a destination across multiple networks. In the described scheme, this is the layer that corresponds to the network function, so it’s the correct match for determining how inter-network delivery is managed.

Data representation and formatting, encryption, and compression live in the presentation layer, not in the network layer. The transport layer focuses on end-to-end delivery between hosts, including reliability and flow control, which is different from routing across networks. The topmost or user-related layer handles user-facing interactions, not the mechanics of moving packets through networks.