A network engineer is investigating reports of poor network performance.
Upon reviewing a report, the engineer finds that jitter at the office is greater than 10ms on the only WAN connection available.
Which of the following would be MOST affected by this statistic?
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A. B. C. D.A.
Jitter is a measurement of the variation in delay of received packets in a network. In a network with high jitter, packets arrive at their destination with a significant delay variation. This can result in packets being dropped, causing retransmissions and degraded performance.
Out of the given options, the application that would be most affected by high jitter is A. A VoIP sales call with a customer.
VoIP (Voice over Internet Protocol) is a real-time application that requires low latency and jitter for effective communication. If there is high jitter in the network, it can result in packets being delayed, lost or arriving out of order. This can cause significant degradation in voice quality, including choppy or garbled audio, dropped calls, and delays in conversation. A jitter of more than 10ms can be problematic for VoIP applications.
In-office video call with a coworker (option B) is also a real-time application that can be affected by jitter, but it is less sensitive to jitter than VoIP. The video stream can tolerate some delay variation, and the effect of jitter is often less noticeable in video calls than in VoIP calls.
The routing table from the ISP (option C) is an internal network component that is not directly affected by jitter. The routing table is used by the router to determine the best path for forwarding packets through the network.
The firewall CPU processing time (option D) can be affected by the network traffic volume and the complexity of firewall rules, but it is not directly related to jitter. The firewall processes packets based on predefined rules and policies to allow or deny traffic.
In conclusion, option A, A VoIP sales call with a customer, would be most affected by high jitter on the WAN connection.