Cisco Certified Support Technician (CCST) NetworkingNetworking FundamentalsMedium
A user reports slow network performance and frequent disconnections on their laptop when connecting to the office Wi-Fi, especially during peak hours. The network administrator suspects interference from other wireless devices. Which of the following is most likely causing this issue?
- AIncorrect IP address configuration on the laptop.
- BCongestion on the wired backbone network.
- CWireless channel interference from neighboring access points.
- DOutdated network drivers on the office server.
Show answer & explanationAnswer & explanation
Correct answer: C. Wireless channel interference from neighboring access points.
Wireless channel interference occurs when multiple wireless devices or access points operate on the same or overlapping frequency channels, causing signal degradation, slow speeds, and frequent disconnections.
Why the other options are wrong
- A. Incorrect IP configuration would likely prevent any connectivity, not just slow performance and disconnections during peak hours.
- B. Wired backbone congestion would affect all users, not just one laptop, and might manifest differently than frequent disconnections.
- D. Server drivers affect server performance, not typically a single client's Wi-Fi connectivity issues.
Wireless Channel Interference
A phenomenon where wireless signals from different devices or networks operating on the same or adjacent frequency channels collide, leading to reduced signal quality, slower speeds, and unreliable connections.
- Common in dense environments with many Wi-Fi networks.
- Can be mitigated by selecting non-overlapping channels (e.g., 1, 6, 11 in 2.4 GHz).
- Affected by other devices like microwaves and cordless phones.
Memory trick: Too many voices on one channel creates a mess.