What term refers to a port channel architecture that groups several physical Ethernet links into one logical link for fast, fault-tolerant connections?

• A. EtherChannel
• B. Link Aggregation
• C. Bonding
• D. Switch Trunking

Answer: (A)

Grouping several physical Ethernet links into one logical link to boost throughput and provide redundancy is EtherChannel. This Cisco term describes port-channel technology that combines multiple physical connections into a single logical path, so traffic can be spread across the links and continue even if one link fails. It can use LACP (802.1AX) or be configured statically, enabling fast, fault-tolerant connections because you gain both more bandwidth and link redundancy without changing how devices communicate higher up.

The concept is the same idea as Link Aggregation in the IEEE standard, but EtherChannel is the commonly used term in many network contexts for this port-channel architecture. Bonding is the Linux/Unix name for a similar idea, and Switch Trunking is about tagging and carrying multiple VLANs over a single physical link rather than aggregating several links for bandwidth and redundancy.