# Netw310 Week 1 Lab

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Alicia M. NETW310, Professor Sharwood October 31, 2012 Lab #1: Examine the Physical Layer 1. There are three patterns outlined on the screen which one of these is identifying the noise floor? The middle pattern shows the noise floor. 2. What is the approximate signal level of the noise floor? The 2.4 GHz band noise floor is -95db, and the 5GHz band noise floor is -100db. 3. Of the 11 channels being displayed which ones have the lowest noise floor? Of the 11 channels being displayed, channels 8-11 have the lowest noise floors. 4. Inside the circle marked as Pattern 2 is this a signal from one of the three unlicensed fequency ranges? Yes, it is a signal from one of the 3 unlicensed frequency ranges. With regard to the transcript associated with the video, the red circle is actually an unlicensed frequency range. 5. If it is, what type of signal is this, 900 MHz, 2.4GHz, or 5 GHz? It is a 2.4 GHz signal. 6. Inside the circle marked as Pattern 3 is this a signal from one of the three unlicensed signal ranges? Yes, it is a signal from one of the three unlicensed signal ranges. 7. If it is, what type of signal is this, 900 MHz, 2.4GHz, or 5 GHz? It is a 900MHz signal. 8. In the area marked as Pattern 4 some interference has appeared. What type of interference is this, such as all-channel, co-channel, adjacent-channel? The interference that has appeared is adjacent-channel interference. 9. On what channel has this interference appeared on? This interference has appeared on channel 4 or 5. 10. Is this interference weaker than, the same, or stronger than the signal that was there before it appeared? The interference appears to peak at a higher range between channels 4 and 5 and is stronger than channel 6, which is where the interference is