Exam N10-007 topic 1 question 345 discussion

"Jitter is the uneven arrival of packets. For example, imagine a VoIP conversation where packet 1 arrives at a destination router. Then, 20 ms later, packet 2 arrives. After another 70 ms, packet 3 arrives, and then packet 4 arrives 20 ms behind packet 3. This variation in arrival times (that is, variable delay) is not dropping packets, but the jitter might be interpreted by the listener as dropped packets." "Latency: Refers to the time lapse between sending or requesting information and the time it takes to return. As you might expect, satellite communication experiences high latency due to the distance it has to travel. [...] Closely tied to latency, which was discussed earlier, jitter differs in that the length of the delay between received packets differs. While the sender continues to transmit packets in a continuous stream and space them evenly apart, the delay between packets received varies instead of remaining constant. This can be caused by network congestion, improper queuing, or configuration errors."