VoIP システム エンジニアは、ネットワークのトラブルシューティング中に、データが宛先に到着して返されるまでに必要な時間に重大な矛盾があることを発見しました。この問題を最もよく説明する用語は次のうちどれですか?
正解:C
Jitter is the variation in the delay of data packets over a network. It is caused by factors such as network congestion, routing changes, packet loss, or improper queuing. Jitter affects the quality of VoIP calls because it can cause gaps, distortion, or out-of-order delivery of voice data. Jitter can be measured by the difference between the expected and actual arrival times of packets2. To reduce jitter, VoIP systems use buffers to store and reorder packets before playing them back. However, too much buffering can also increase latency, which is the total time it takes for data to travel from one point to another3.
Reference 2 - VoIP Troubleshooting: 5 Fixes for Common Connection Issues - Nextiva 3 - Troubleshooting VoIP - Is it You or the Network? - PingPlotter