Chapter 1

Chapter 1 does not cover any exam objectives. Therefore, there are no review questions in this chapter.

Chapter 2

1. Answer: C

   C is the correct answer because the wavelength depends on the velocity of the wave and its frequency, not on its amplitude.

   A, B, and D are incorrect answers because they are the correct statements. Remember the formula ??= v/f, where v is the velocity of the wave in the transmission line and is less than the velocity of light c, which will be the velocity of the wave through the free space.

2. Answer: D

   D is the correct answer because the signal-to-noise ratio is measured in decibels, denoted as dB.

   A and C are incorrect because the signal-to-noise ratio is the ratio of the signal strength to the noise strength.

   D is incorrect because ohm is not the unit used to measure resistance.

3. Answer: B

   B is the correct answer because refraction causes the change in direction of a wave at an interface between two dissimilar media, but the wave does not return to the medium from which it hit the interface.

   A is incorrect because reflection causes the abrupt change in direction of a wave at an interface between two dissimilar media so that the wave returns to the medium from which it hit the interfce.

   C