CompTIA Network+ (N10-009) — Question 161

A network engineer is troubleshooting an issue with a VoIP network. After performing analysis, the engineer found that when users upload large files, voice quality is severely degraded. When no other traffic is on the network, voice quality is fine. Which of the following should the engineer do to most likely resolve the issue?

Answer options

• A. Enable MAC filtering.
• B. Reduce the VLAN database.
• C. Configure QoS on the router.
• D. Implement ACLs.

Correct answer: C

Explanation

Configuring QoS on the router prioritizes voice traffic over other types of data, thereby maintaining voice quality even during large file uploads. The other options, such as MAC filtering, reducing the VLAN database, and implementing ACLs, do not specifically address the issue of traffic prioritization required for VoIP quality.