Cisco Certified Network Associate (CCNA) Practice Exam

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In the #show eigrp neighbors output, what does RTO indicate?

Round Trip Optimization time
Retransmission Timeout
Randomized Transmission Order
Route Table Output

The correct answer is: Retransmission Timeout

The output from the "#show eigrp neighbors" command displays various parameters related to EIGRP (Enhanced Interior Gateway Routing Protocol) neighbors. In this context, RTO stands for Retransmission Timeout. This is a critical value in EIGRP that indicates the time period the protocol waits for a response from a neighbor after sending a packet. If a response is not received within this time frame, the packet is considered lost, prompting EIGRP to retransmit the packet to ensure data consistency and reliability in the exchange of routing information. Understanding Retransmission Timeout is essential in network operations, as it influences the responsiveness and efficiency of EIGRP in maintaining the routing table and quickly adapting to network changes. This ensures that the routing information remains up to date, allowing for optimal data forwarding paths within the network.