Learn how overlooking quality of service (QoS) settings on a firewall can substantially impact network traffic and degrade performance when installing a new web server. Discover best practices for configuring QoS to optimize traffic flow.
Table of Contents
Question
A web developer installs and launches a new external web server. Immediately following the launch, the performance of all traffic traversing the firewall degrades substantially. Which of the following considerations was overlooked?
A. OS compatibility
B. Quality of service
C. 32- vs. 64-bit architecture
D. Storage requirements
Answer
B. Quality of service
Explanation
When a new external web server is installed and launched, if the performance of all traffic going through the firewall significantly degrades, the key consideration that was likely overlooked is quality of service (QoS) configuration on the firewall.
QoS settings allow network administrators to prioritize and manage network traffic based on importance and sensitivity to latency. When adding a new high-traffic server, it’s critical to adjust the QoS rules on the firewall to accommodate the additional traffic and ensure essential services maintain adequate bandwidth and low latency.
Without proper QoS rules in place, the large amount of new traffic from the web server can saturate the network and degrade performance for all other traffic trying to traverse the firewall, including sensitive voice and video data. The firewall may process packets on a first-come, first-served basis, making the network slow and unreliable.
In contrast, considerations like OS compatibility, 32- vs 64-bit architecture, and storage requirements, while important for the server itself, would not directly impact the performance of traffic going through the firewall. The core issue is not prioritizing and allocating bandwidth appropriately across all traffic with QoS.
To avoid this issue, firewall QoS settings should always be reviewed and adjusted when adding new servers or making significant changes to the network traffic profile. This ensures a smooth launch without degrading overall network performance.
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