300-445 Question 114
Select 3An enterprise is deploying a video conferencing application across its regional offices. The IT team has observed issues with the quality of the video stream, including delays and choppy audio. Upon investigation, they identify network characteristics such as latency, jitter, and packet loss as the root cause. Which of the following actions should the IT team take to improve the quality of the video conferencing application?
- A
Implement Quality of Service (QoS) to prioritize video traffic on the network.
- B
Increase the available bandwidth for the video conferencing application.
- C
Disable TCP for video traffic and force the use of UDP to avoid retransmissions.
- D
Reduce the Maximum Transmission Unit (MTU) size to minimize packet fragmentation.
- E
Monitor and address high levels of jitter by optimizing routing paths.
Show answer and explanation
Correct answers: A, B, E
Explanation
Video conferencing applications are sensitive to network characteristics such as latency, jitter, and packet loss. Implementing QoS ensures that video traffic is given priority over less critical traffic. Increasing bandwidth reduces congestion, directly improving overall network performance. Addressing jitter by optimizing routing paths ensures consistent packet delivery. While UDP is commonly used for video applications, simply disabling TCP without resolving underlying network issues will not improve quality. Similarly, reducing MTU size is not a targeted solution for issues like jitter or latency.
- A. Correct.
Correct. QoS enables prioritization of video traffic, reducing latency and jitter for time-sensitive applications like video conferencing.
- B. Correct.
Correct. Increasing available bandwidth can reduce congestion, which helps minimize latency and packet loss.
- C. Incorrect.
Incorrect. While UDP is commonly used for video traffic, forcing its use without addressing network issues like jitter or packet loss will not solve the quality problem.
- D. Incorrect.
Incorrect. Reducing the MTU size unnecessarily could lead to increased overhead, potentially worsening the network performance without directly addressing the root cause.
- E. Correct.
Correct. Jitter can be mitigated by optimizing routing paths, which ensures more consistent delivery of packets and improves the video quality.