Final answer:
The two commonly encountered synchronization signals are frequency and being in phase and frequency and being out of phase. When two signals have the same frequency and are in phase, their peaks and troughs align, resulting in constructive interference. When two signals have the same frequency and are out of phase, their peaks and troughs do not align, resulting in destructive interference.
Step-by-step explanation:
The two commonly encountered synchronization signals are frequency and being in phase and frequency and being out of phase.
When two signals have the same frequency and are in phase, it means that their peaks and troughs align at the same time, resulting in constructive interference. This can be seen in phenomena like sound waves or radio waves, where waves with the same frequency and in phase can amplify each other.
On the other hand, when two signals have the same frequency and are out of phase, their peaks and troughs do not align, resulting in destructive interference. This can be seen in phenomena like noise cancellation, where waves that are out of phase with each other can cancel each other out.