LESSON 1
PRACTICE EXERCISE
ANSWER KEY AND FEEDBACK
Item
Correct Answer and Feedback
1.
D.
Long-distance trunks (page 1-7, Learning Event 4)
2.
C.
Synchronous (page 1-11, para 9c)
3.
B.
An increase of thermal background (page 1-20, para 2c)
4.
C.
FM minimizes the effect of noise peaks (page 1-20, para 2e)
SS0031
1-40
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