TestOut LabSim A+ Certification Practice Exam

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Which wireless system is likely causing interference on an 802.11g network due to recent installation?

Wireless phone system at 5.8 GHz
802.11a wireless network
Wireless TV distribution system at 2.4 GHz
Wireless phone system at 900 MHz

The correct answer is: Wireless TV distribution system at 2.4 GHz

The choice of a wireless TV distribution system operating at 2.4 GHz is the most plausible reason for interference with an 802.11g network. This is because 802.11g operates within the 2.4 GHz frequency band (specifically between 2.4 GHz to 2.5 GHz). When devices operate on the same frequency range, they can create overlap that leads to signal interference, causing reduced network performance, slower speeds, or dropped connections. The wireless phone system at 5.8 GHz and the 802.11a wireless network, which uses the 5 GHz band, are less likely to cause interference with 802.11g, as they operate on a different frequency. Similarly, the 900 MHz wireless phone system is also out of the frequency range that would directly interfere with 802.11g. Therefore, the installation of the wireless TV distribution system at 2.4 GHz is the most likely culprit for interference in this scenario.