Exam 17: Information Science

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Use the nearest-neighbor Venn diagram method to decode the received word 1011000.

(Short Answer)
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Given that the following numbers were encoded using the delta function, which of the following is not an original number? 20437 547 -927 211 62 503 -826

(Multiple Choice)
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Use the Vigenère cipher with the key word DRUID to encrypt the message INCOMING GIANT.

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Give an example of a circumstance where the code C = {00000, 11111} could be of use.

(Essay)
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Suppose the Venn diagram coded message 1110 is received as 1110110. Will the original message be recovered?

(True/False)
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Let C be the code {1010, 0101, 1111, 0000}. What is the weight of this code?

(Multiple Choice)
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Use the nearest-neighbor Venn diagram method to decode the received word 1011001.

(Multiple Choice)
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Add the binary sequences 0100110 and 1101010. How many 1s digits are in the sum?

(Multiple Choice)
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Append a fourth check digit to each seven-digit code created by the Venn diagram method c4 = a1 + a2 + a3 + a4. With this additional check digit, can double errors be detected and corrected?

(True/False)
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Suppose you create a binary code by appending to each message word a1 a2 a3 three parity-check digits c1 = a1 + a2 , c2 = a2 + a3, and c3 = a1 + a3. Will the resulting code detect and correct all single-digit errors?

(True/False)
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When using the Venn diagram for determining length seven binary code words for length four messages, what is the weight of the code?

(Multiple Choice)
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Use the nearest-neighbor Venn diagram method to decode the received word 1101101.

(Multiple Choice)
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You propose a code in which each three-digit binary message word a1 a2 a3 has appended a parity-check digit c1 = a1 + a2 + a3. Which of the following is a true statement?

(Multiple Choice)
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Use the Venn diagram method to determine the code word of the message 1001.

(Multiple Choice)
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