正解:C
In the context of IP SLA (Internet Protocol Service Level Agreement) to measure network performance and record statistics hop-by-hop, option C is the correct answer. This option involves configuring IP SLA with a responder to facilitate the path-jitter operation, which is essential for measuring the hop-by-hop performance statistics. The configuration "ip sla responder" enables the device to respond to IP SLA request packets, providing detailed insights into network performance metrics like latency, jitter, and packet loss at each hop along the path.
References := Implementing and Operating Cisco Service Provider Network Core Technologies