Exam N10-009 Topic 1 Question 313 Discussion

Actual exam question for CompTIA's N10-009 exam
Question #: 313
Topic #: 1
A small business is deploying new phones, and some of the phones have full HD videoconferencing features. The Chief Information Officer (CIO) is concerned that the network might not be able to handle the traffic if it reaches a certain threshold. Which of the following can the network engineer configure to help ease these concerns?

Suggested Answer: D Vote an answer

Full duplex mode allows devices to send and receive data simultaneously, improving network performance and reducing congestion, which is critical for VoIP and video conferencing.
Breakdown of Options:
A . A VLAN with 100Mbps speed limits - VLANs segment traffic but limiting speeds to 100Mbps would worsen video performance.
B . An IP helper to direct VoIP traffic - IP helper is used for DHCP relay, not for VoIP optimization.
C . A smaller subnet mask - A smaller subnet reduces IP address availability but does not improve network performance.
D . Full duplex on all user ports - Correct answer. Full duplex eliminates collisions, allowing better VoIP and video performance.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 2.2: Compare and contrast various networking devices.
IEEE 802.3: Ethernet Full Duplex Operation

by toweringmphikwa at Feb 09, 2026, 11:08 PM

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toweringmphikwa
2026-02-09 23:08:08
A VLAN with 100mbps speed limits
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