Question
A network administrator is configuring a new switch and wants to connect two ports to the core switch to ensure redundancy. Which of the following configurations would meet this requirement?
- A. Full duplex
- B. 802.1Q tagging
- C. Native VLAN
- D. Link aggregation Correct
Explanation
Link aggregation (for example, LACP defined in IEEE 802.1AX) bundles two or more physical ports into one logical link, so traffic continues over the remaining member if one link fails, while also adding bandwidth. Full duplex only lets a single link send and receive at the same time. 802.1Q tagging carries multiple VLANs over a trunk, and the native VLAN is the untagged VLAN on that trunk; neither provides redundancy between two ports.
