Which of the following statements are TRUE about fixed ports and cards of AR routers?

Overview of Fixed Ports and Cards in AR Routers:

AR routers have fixed ports and modular cards that support various networking functions, including Layer 2 and Layer 3 operations.

Analysis of Each Statement:

Option A:This is incorrect. Not all Layer 2 cards support LAN/WAN switching; it depends on the specific model and card type.

Option B:This is correct. Layer 2 cards with VLANIF interfaces can perform simple Layer 3 forwarding but lack advanced features like NAT, MPLS, IPsec, and HQoS.

Option C:This is correct. Some AR router models allow WAN ports to be reconfigured as LAN ports, providing flexibility in deployment.

Option D:This is correct. Theundo portswitchcommand can be used to switch LAN ports to WAN ports, enabling Layer 3 functionality.

Conclusion:The correct statements are Options B, C, and D.