300-445 Question 118
Select 2An enterprise network is experiencing poor performance with a critical video conferencing application. Users report issues such as choppy audio and delayed video streams. Upon investigation, you identify that the network is experiencing high jitter and packet loss. Which of the following actions would most effectively address the issue?
- A
Implement Quality of Service (QoS) to prioritize video conferencing traffic over other types of traffic on the network.
- B
Increase the bandwidth of the network link between the video conferencing servers and the users.
- C
Enable TCP instead of UDP for the video conferencing application to ensure reliable packet delivery.
- D
Configure a jitter buffer on the video conferencing endpoints to mitigate the effects of jitter.
- E
Disable any packet fragmentation settings on the network to reduce the likelihood of packet loss.
Show answer and explanation
Correct answers: A, D
Explanation
Addressing jitter and packet loss in real-time applications like video conferencing requires solutions that directly target these issues. Implementing QoS ensures that critical traffic is prioritized, reducing the likelihood of packet loss and jitter affecting the application. Configuring a jitter buffer helps smooth out the delivery of packets, improving the user experience. Other options, like increasing bandwidth or switching protocols, may not effectively resolve the root causes of the issue in this scenario.
- A. Correct.
Correct: Implementing Quality of Service (QoS) ensures that video conferencing traffic is prioritized, reducing the impact of jitter and packet loss by allocating appropriate resources to critical applications.
- B. Incorrect.
Incorrect: While increasing bandwidth may improve overall network performance, it does not directly address jitter or packet loss, which are the root causes of the issue.
- C. Incorrect.
Incorrect: Switching to TCP can ensure reliable packet delivery, but it introduces additional overhead and latency, which is not ideal for real-time video conferencing.
- D. Correct.
Correct: Configuring a jitter buffer helps mitigate the effects of jitter by temporarily storing packets and delivering them at a consistent rate, improving the audio and video quality for users.
- E. Incorrect.
Incorrect: Disabling packet fragmentation may not directly address jitter or packet loss and could lead to other issues, such as oversized packets being dropped by network devices.