CompTIA Network+ N10-009 Practice Question

To confirm if jitter is the problem, the administrator should analyze network traffic using a protocol analyzer to measure jitter values. This approach directly assesses the jitter on the network, which is crucial for understanding the impact on real-time traffic such as VoIP. Monitoring interface counters might help in identifying other issues like packet loss or errors but do not specifically measure jitter. Checking the configuration of QoS is a step taken if excessive jitter is confirmed, to manage priority and ensure quality for voice traffic. Replacing ethernet cables would be an unlikely first step without specific evidence of physical layer issues causing jitter.