[&] Which property of EMR is not typically manipulated to encode data? (Select the best answer)
- Amplitude
- Magnetic Polarity -- Correct
- Phase
- Frequency

[&] An RF waveform is sampled at a certain timestamp.  The received waveform is compared against a previous timestamp sample and it is discovered that both waveforms are peaking in amplitude during both sample periods. This indicates that both waveforms are \_\_\_\_\_. (Select the best answer)
- 180-degrees out of phase
- At the same frequency
- Of the same wavelength
- Perfectly in phase -- Correct

[&] Some of the properties of electromagnetic radiation can be manipulated in order to transmit data.  In Wi-Fi, this manipulation of EMR is called \_\_\_\_.  (Select the best answer)
- Transcoding
- Encoding
- Modulation -- Correct
- Signalling