Exam N10-009 topic 1 question 98 discussion

B. Switch Explanation: A Switch can operate at multiple layers of the OSI model. Specifically: A Layer 2 switch operates at the Data Link Layer, where it uses MAC addresses to forward frames within the same local network. A Layer 3 switch (also known as a routing switch) can operate at the Network Layer, using IP addresses to perform routing functions between different networks. This ability to function at both Layer 2 and Layer 3 allows switches to handle different types of network traffic and responsibilities.

The correct answer is: B. Switch Explanation: A switch can operate at multiple layers of the OSI model, depending on its type: Layer 2 (Data Link Layer): Most switches are Layer 2 devices. They forward traffic based on MAC addresses and use a MAC address table to direct frames to the appropriate ports. Layer 3 (Network Layer): Layer 3 switches (often called multilayer switches) can perform routing functions, forwarding traffic based on IP addresses. These switches combine the functionality of traditional Layer 2 switches and routers, making them versatile in modern networks.