Netw 310

Lab #1, Examine the Physical Layer

1. There are three patterns outlined on the screen which one of these is identifying the noise floor?

Pattern Number 1.

2. What is the approximate signal level of the noise floor?

The approximate level of the noise floor is -95db for the 2.4GHz. When changed to the 5ghz the floor changed to about -100db.

3. Of the 11 channels being displayed which ones have the lowest noise floor?

Channels 8 to 11 seem to have the lowest noise.

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

Yes

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

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.

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

2.4GHz

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?

I think this is adjacent-channel interference.

9. On what channel has this interference appeared on?

Could be either channel 4 or 5

10. Is this interference weaker than, the same, or stronger than the signal that was there before it appeared?

It appears to be operating on channel 6 with the interference coming around channels 4 or 5. I am not sure how to answer this part except to say the interference look sto be much stronger than the signal that was on that channel previously to the interference arriving.