300-445 Question 254
Select 3A global enterprise is experiencing network congestion during peak hours, impacting critical applications such as video conferencing and real-time transaction processing. After analyzing network telemetry data, you observe that certain links are consistently overutilized, while other links remain underutilized. Additionally, packet delay and loss are higher for real-time traffic. Based on this data, what optimizations should you recommend to address these issues?
- A
Reconfigure Quality of Service (QoS) policies to prioritize real-time traffic like video and transactional data.
- B
Implement load balancing by redistributing traffic across underutilized links.
- C
Upgrade all network links to higher bandwidth to eliminate congestion permanently.
- D
Adjust routing protocols to prefer less congested paths for non-critical traffic.
- E
Disable QoS policies to allow all traffic to use available bandwidth equally.
Show answer and explanation
Correct answers: A, B, D
Explanation
The correct optimizations involve reconfiguring QoS to prioritize real-time traffic, redistributing traffic across underutilized links via load balancing, and adjusting routing protocols to prefer less congested paths for non-critical traffic. These strategies address congestion, improve traffic prioritization, and optimize link utilization without requiring costly infrastructure upgrades.
- A. Correct.
Reconfiguring QoS policies to prioritize real-time traffic ensures that latency-sensitive applications like video conferencing and transaction processing receive priority treatment, reducing packet delay and loss.
- B. Correct.
Implementing load balancing can optimize the utilization of all available links, alleviating congestion on overutilized links and improving overall network performance.
- C. Incorrect.
Upgrading all network links to higher bandwidth is expensive and may not address the root cause of the issue. It is not an immediate or cost-effective solution for peak-hour congestion.
- D. Correct.
Adjusting routing protocols to prefer less congested paths for non-critical traffic helps distribute the load more effectively, ensuring better bandwidth availability for critical traffic.
- E. Incorrect.
Disabling QoS policies would worsen the issue by removing traffic prioritization, which is essential for maintaining the performance of critical applications during congestion.