midterm1-winter-2015-with-solutions.pdf

midterm1-winter-2015-with-solutions.pdf - ENGINEER 1D04...

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ENGINEER 1D04 Midterm Test 1 McMaster University Answer Key: Large arrow ( =) for correct, small ( ) for partially correct Day Class 03, 04, Version 1 Dr. W. Farmer DURATION: 2 hours February 10, 2015 Please CLEARLY print : NAME: Student ID: This examination paper includes ?? pages and 30 questions. You are responsible for ensuring that your copy of the examination paper is complete. Bring any discrepancy to the attention of your invigilator. Special Instructions : 1. It is your responsibility to ensure that the answer sheet is properly completed. Your examination result depends upon proper attention to these instructions: A heavy mark must be made, completely filling the circular bubble, with an HB pencil. Print your name, student number, course name, course number and the date in the space provided on the top of Side 1 and fill in the corresponding bubbles underneath. Fill in the bubble corresponding to your version number. Mark only ONE choice from the alternatives (1, 2, 3, 4, 5 or A, B, C, D, E) provided for each question. If there is a True/False question, mark 1 (or A) for True, and 2 (or B) for False. The question number is to the left of the bubbles. Make sure that the number of the question on the scan sheet is the same as the number on the examination paper. Pay particular attention to the “Marking Directions” given on the scan sheet. Begin answering the questions using the first set of bubbles, marked “1.” Answer all questions. 2. The use of notes and textbooks is not permitted. 3. Calculators, computers, cell phones, and all other electronic devices are not to be utilized. 4. Read each question carefully. 5. Try to allocate your time sensibly and divide it appropriately between the questions. 6. Select the best answer for each question. Page 1 of ??
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Question 1 [1 mark] For an engineer, having a good understanding of computing can be a matter of life and death. Is this statement true or false? A. True. = B. False. ANSWER: The Therac-25 case study illustrates that a poor understanding of computing can result in human death. Question 2 [1 mark] In Python, the rational number 0.1 can be represented exactly by a value of type float . Is this statement true or false? A. True. B. False. = ANSWER: 0.1 is represented in Python by the value 0.10000000000000001. Hence 0.1 is not represented exactly by a float. Question 3 [1 mark] In Python, variables and constants are implemented exactly the same way. Is this statement true or false? A. True. = B. False. ANSWER: Variable and constants are indistinguishable in terms of how they are implemented in Python. In particular, both variables and constants can be rebound during run-time. Question 4 [1 mark] Ada Lovelace programmed the first electronic computer. Is this statement true or false?
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