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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 9.

Multiple Choice Questions

1. Why were there so many message errors with the early telegraph?
(a) Untrained workers.
(b) Passing the messages between too many operators.
(c) Poor weather conditions.
(d) Political unrest.

2. Shannon used the term entropy to have what meaning in reference to a message?
(a) Uncertainty.
(b) Relevance.
(c) Importance.
(d) Certainty.

3. What was the Morse code comprised of?
(a) Short pulses, called dots, and long pulses, called dashes.
(b) Numbers.
(c) Symbols.
(d) Letters.

4. How does heat travel?
(a) Heat can travel from a hot thing to a warm thing.
(b) Heat can travel from a hot thing to a hotter thing.
(c) Heat can travel from a cold thing to a hot thing.
(d) Heat can travel from a hot thing to a cold thing.

5. What does a closed system made up of a hot part and a cold part attain as the heat passes from the hot part to the cold part?
(a) Equilibrium.
(b) Neutrality.
(c) Controlled environment.
(d) 32 degrees F.

Short Answer Questions

1. What jobs were created to handle the increasing number of telephone calls?

2. There was no "looking up" of information prior to what invention?

3. What type of lists did Babbage create about livestock, fabric, letter combinations in various languages and other facts?

4. What is a bit?

5. What did Shannon call the units of information that he was able to measure in a message?

(see the answer key)

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