220-1201 · Question #431
220-1201 Question #431: Real Exam Question with Answer & Explanation
The correct answer is B: Using VLANs to segregate data and voice traffic. Degraded performance that occurs only during business hours strongly suggests network congestion caused by simultaneous data and voice traffic. Combining voice (VoIP) and data traffic on the same network without proper segmentation can lead to latency, jitter, and packet loss, es
Question
The computers and IP phones at an office experience degraded performance during the day. The issue does not occur before the start of business. Which of the following will resolve the issue?
Options
- AChanging the switches to ones with higher capacity
- BUsing VLANs to segregate data and voice traffic
- CAdding RAM to the PCs and additional VoIP lines
- DUpdating the firmware on the switches
Explanation
Degraded performance that occurs only during business hours strongly suggests network congestion caused by simultaneous data and voice traffic. Combining voice (VoIP) and data traffic on the same network without proper segmentation can lead to latency, jitter, and packet loss, especially during peak usage periods. Implementing VLANs (Virtual Local Area Networks) allows administrators to logically separate voice and data traffic, enabling better traffic management and prioritization. VLANs also support Quality of Service (QoS) policies that ensure time-sensitive voice traffic is prioritized over standard data traffic, improving call quality and overall performance.
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