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Refer to the exhibit. The EtherChannel between SW2 and SW3 is not operational which action resolves this issue?
Correct Answer: B
EtherChannel is a port link aggregation technology that allows the grouping of several physical Ethernet links to create a logical Ethernet link for the purpose of providing fault-tolerance and high-speed links between switches, routers, and servers. For EtherChannel to be operational, both sides of the channel need to negotiate with each other using a protocol like LACP (Link Aggregation Control Protocol) or PAgP (Port Aggregation Protocol). The 'active' mode in LACP actively sends LACP packets and is able to form an EtherChannel if the other side is set to 'passive' or 'active'. If the EtherChannel is not operational, it's likely that one side is not correctly configured to negotiate. Setting SW3 Gi0/1 to 'active' would initiate the negotiation process to form the EtherChannel1. References: The explanation is based on the standard practices of configuring EtherChannel as described in Cisco's Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) documentation and training materials.