CompTIA CASP+ Practice Test

To resolve the issue of metallic-sounding phone calls reported by users, which solution should the helpdesk manager implement?

1. Increase bandwidth on existing lines

2. Provide training for users

3. Establish a dedicated VLAN

4. Change the VoIP provider

The correct answer is: Establish a dedicated VLAN

Establishing a dedicated VLAN for voice traffic is the most effective solution for resolving the issue of metallic-sounding phone calls in a VoIP environment. By creating a separate Virtual Local Area Network (VLAN) for voice over IP, the helpdesk manager can prioritize voice traffic and ensure that it receives the necessary bandwidth and low latency required for clear communications. This separation reduces congestion and interference from other types of data traffic on the network, improving overall call quality and minimizing issues such as distortion or metallic sound in calls. Increasing bandwidth on existing lines may help if there is a general shortage of available bandwidth, but it does not directly address the specific issue of traffic prioritization needed for clear VoIP calls. Providing training for users might help in improving their understanding of how to use the system or troubleshoot common issues, but it won’t resolve the fundamental technical problems that affect call quality. Changing the VoIP provider could be a drastic solution if the current provider is inadequate, but it means switching services without addressing any potential internal network issues that may be contributing to the sound quality problems. Therefore, implementing a dedicated VLAN is a targeted approach that directly relates to managing voice traffic effectively within the existing network infrastructure.