Discover the most likely reason for slow internet speeds in a small office after adding new devices to a single-band 2.4 GHz router, as covered in the CompTIA A+ Core 1 220-1101 exam. Learn how channel interference affects Wi-Fi performance and how to address it.
Table of Contents
Question
A small office has slow internet speeds after adding new devices to the network. The router is a single-band 2.4 GHz model. What is the most likely cause of the slowdown?
A. Insufficient bandwidth
B. Outdated router firmware
C. Channel interference
D. Incorrect QoS settings
E. Faulty WAN port
Answer
C. Channel interference
Explanation
A single-band 2.4 GHz router is prone to channel interference from neighboring networks or devices (e.g., microwaves, Bluetooth). Adding more devices exacerbates this, causing slowdowns due to crowded channels.
A single-band 2.4 GHz router is highly susceptible to channel interference, especially as more devices are added. The 2.4 GHz spectrum is crowded, with only three non-overlapping channels (1, 6, and 11), and many neighboring networks or devices—such as microwaves, Bluetooth, and other Wi-Fi networks—can cause interference when operating on the same or adjacent channels.
As more devices connect, the likelihood of co-channel and adjacent-channel interference increases, leading to congestion and slower speeds for everyone on the network.
This effect is well-documented, particularly in environments with multiple wireless devices or dense office settings. Choosing the correct channel and minimizing overlapping networks can help alleviate these issues, but channel interference remains the most probable cause in this scenario.
CompTIA A+ Core 1 220-1101 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the CompTIA A+ Core 1 220-1101 exam and earn CompTIA A+ Core 1 220-1101 certification.