Netw 310 Lab #1

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 first pattern identifies the noise floor.

2. What is the approximate signal level of the noise floor?
The approximate signal level of the noise floor is -95db at 2.4 GHz and -100db at 5GHz.

3. Of the 11 channels being displayed, which ones have the lowest noise floor?
The lowest noise floor displayed is channels 8 through 11.

4. Inside the circle marked as Pattern 2, is this a signal from one of the three unlicensed frequency ranges?
Yes, it is a signal from one of the three unlicensed frequency ranges.

5. If it is, what type of signal is this, 900 MHz, 2.4GHz, or 5 GHz?
The signal type is 2.4 GHz.

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 frequency ranges.

7. If it is, what type of signal is this, 900 MHz, 2.4GHz, or 5 GHz?
The signal type is 900 MHz.

8. In the area marked as Pattern 4 some interference has appeared. What type of interference is this, such as all-channel, co-channel, or adjacent-channel?
The type of interference is the adjacent-channel interference.

9. On what channel has this interference appeared on?
The interference has appeared on channel 4 or channel 5.

10. Is this interference weaker than, the same, or stronger than the signal that was there before it appeared?
The interference takes place between 4 and 5 and has a higher range and is stronger than before it appeared.