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

Multiple Choice Questions

1. What did the study of thermodynamics not state about the movement of energy?
(a) That it traveled in one direction.
(b) That it traveled in random directions with no pattern.
(c) That it was dynamic.
(d) That it traveled in many directions.

2. Who suggested that the meaning of the word "entropy" mean the opposite of what it was originally, to describe the part of energy which was available to be converted into work?
(a) James Clerk Maxwell.
(b) Isaac Newton.
(c) Albert Einstein.
(d) Christian Doppler.

3. How were telegraph messages priced?
(a) By the volume of messages.
(b) By the language the message was sent in.
(c) By the destination of the message.
(d) By the number of words.

4. What was the Morse code based on?
(a) Symbols.
(b) The alphabet.
(c) Numbers.
(d) Dots and dashes.

5. What did Shannon call the units of information that he was able to measure in a message?
(a) Data.
(b) Bits.
(c) Microns.
(d) Bytes.

Short Answer Questions

1. Shannon used the term entropy to have what meaning in reference to a message?

2. What is a bit?

3. What were the benefits of the early logarithm tables?

4. Seventeenth numerical tables were set up so that what factor could be learned about each number?

5. What is the modern meaning of "entropy"? "Entropy was not a kind of energy or an amount of energy," Gleick writes (p. 271). It was instead an abstract measurement of the unavailability of energy.

(see the answer key)

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