Exam N10-008 topic 1 question 3 discussion

A spectrum analyzer is a tool that focuses on the physical layer, which will vary based on the type of analyzer. Although vendors make these analyzers for both audio and optical signals, in most cases spectrum analyzers are used to analyze wireless or radio frequency signals. Spectrum analyzers are primarily used to identify and measure the strength of radio signals that are present in the area. They can visually display these signals by frequency on the device. These devices are used to locate sources of interference that may impact the operation of a wireless network.

A spectrum analyzer can detect interference from other networks and non-802.11 devices that are operating in the same frequency range as the wireless network. The tool analyzes the frequency spectrum to detect and identify any sources of interference and helps the technician find the root cause of the high jitter issue. The other options are not the best tools to troubleshoot this issue: A NetFlow analyzer analyzes network traffic patterns but does not provide information on interference sources. A bandwidth analyzer measures network bandwidth usage but does not help identify interference sources. A protocol analyzer analyzes network protocol behavior but does not help detect interference sources.

D. Spectrum Analyzer helps identify information from Radio Frequency emission. WiFi is a Radio Frequency device.

To identify and measure interference, scan for RF sources using some form of RF Scanner. a Spectrum Analyzer can measure electrical signals for frequency, power, harmonics, distortion and more. We measure Radio Frequency Interference (RFI) with the Signal-to-Noise Ratio (SNR), essentially comparing the Signal Strength and the overall interference in the space.

To see the RF interference, spectrum analyzer is the tools to go.

My answer was D, Spectrum Analyzer. Because a spectrum analyzer is basically a tool that focuses on the physical layer, and varies based on the type of analyzer needed.

wireless network and interference from other networks points to spectrum analyzer as the correct tool for the job.

A spectrum / signal analyzer measures the magnitude of an input signal versus frequency within the full frequency range of the instrument.

Spectrum analyzer