Cisco Certified Network Professional 2026 – 400 Free Practice Questions to Pass the Exam

Enabling the 'non-silent' option in Port Aggregation Protocol (PAgP) indeed allows for the exchange of messages between devices during channel group configuration, specifically when creating EtherChannel. When this option is enabled, the protocol requires that the devices involved in the aggregation actively communicate with each other by sending and receiving these PAgP messages, allowing for effective negotiation and management of link aggregation.

This is important because it ensures that both ends of the channel understand each other's capabilities and configuration. When a device operates in 'non-silent' mode, it actively participates in the negotiation process, which is vital for ensuring that any link aggregation is established correctly and maintains stability.

The other options do not accurately reflect the role of the 'non-silent' option in PAgP. For instance, it does not limit operations to only silent devices or merely increase interface priority; rather, it actively facilitates communication to ensure proper configuration and operation of the EtherChannel.