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Unformatted text preview: CPSC 313 Midterm Test November 7, 2005 Name: Tutorial Section Day (Circle One): Mon Tues Wed Instructions: Answer all multiple choice questions in part A on the score card using pencil . Answer all questions in part B in the space provided. The only aid allowed is one index card with notes. In part B you are required to answer questions 1, 2 and 3. In part B you have the choice between answering question 4 or 5. If you answer both question 4 and 5 only question 4 will be marked. There are 45 points available on this exam. Duration: 50 minutes ID Number: Section Question Score Possible score A 115 15 B 1 5 2 5 3 10 4 or 5 10 Total: 45 1 ID Number: Part A  Multiple Choice Questions Answer all multiple choice questions on the score card using pencil . Each question is worth 1 mark. True/False Questions Answer true or false for the following statements. On the bubble sheet, indicate true by filling in the bubble for a and false by filling the bubble for b. 1. There exists an unambiguous contextfree grammar for all contextfree languages. 2. If a language is regular, it must also be contextfree. 3. If a language L is regular, then its complement L is also regular. 4. The pumping lemma for regular languages is useful for proving that a language is not regular. 5. A decision problem is a problem where the input is a sequence of strings, s 1 , s 2 , . . . , s n , and the output is one of these strings s i (1 i n .) 6. The set of languages accepted by NFAs is the same as the set of lan guages accepted by DFAs. 2 ID Number: Multiple Choices For the following questions choose the best answer....
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This note was uploaded on 10/19/2008 for the course CPSC 313 taught by Professor Na during the Spring '08 term at University of Calgary.
 Spring '08
 NA

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