Multiple Choice
In modern communication systems,data is sent from one point to another via
A) input data.
B) alternating current (A/C) .
C) pressure changes.
D) electromagnetic signals.
E) direct current (D/C) .
Correct Answer:

Verified
Correct Answer:
Verified
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Q3: Each signal change or element is called
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Q8: Standards are important when devices must communicate
Q9: An encoding scheme is used<br>A)in digital transmission
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