/******************************************************************/ This document is subject to change. Please monitor (refresh) regularly. Please report any errors or omissions in this document: anne.dawson@gmail.com This document is current at:Friday 27th January 2012, 16:11 PT, ADREFRESH THIS PAGE OFTEN FOR LATEST VERSION /******************************************************************/ CSCI120 QUIZ 2 ==============
EXAM CONDITIONS APPLY FOR ALL QUIZZES
ELECTRONIC EQUIPMENT SHOULD BE SWITCHED OFF AND PLACED AT THE FRONT OF THE ROOM.
Exam Rules
Notes on Academic Honesty (Thanks to Greg Baker, SFU)
Example of Academic Honesty Violation
Quiz 2 covers all topics covered in the course so far.
All the topics are listed on the course schedule for the current semester.
CSCI120 QUIZZES
===============
There are three quizzes worth 20% in total:
Quiz 1 = 6%
Quiz 2 = 6%
Quiz 3 = 8%
The date of the quiz is shown in the course schedule and on C4.
See C4 for the latest details about Quiz 2.
Note: Students may be tested in a quiz, exam or assessed lab
on the content of reading assignments,
in-class assignments and homework assignments.
The format of Quiz 2 is as follows:
Quiz 2
======
(6% of final grade, 90 minutes)
Questions are based on the course notes and assignments.
Quiz 2 is closed-book: no books, notes, calculators, phones
or any other electronic equipment are allowed during quizzes.
Questions types may include: multiple choice, short answer,
written questions, questions requiring interpretation of Python code,
detection of errors and writing new Python code.
Quiz 2 covers all topics covered in the course so far.
All the topics are listed on the course schedule for the current semester.
Example Quiz 2 questions:
1. What is the output of this Python program?
x = 17 / 2 % 2 * 3**3
print (x)
A. 13.5
B. 16
C. 54.0
D. none of the others
Answer: A. 13.5
2. The following program will create the output shown beneath it.
Program:
print (7 > 10)
print (4 < 16)
print (4 == 4)
print (4 <= 4)
print (4 != 4)
Output:
False
True
True
True
False
A. True
B. False
Answer: A. True
3. What is the output of this Python program?
num1 = 5
if num1 >= 91:
num2 = 3
else:
if num1 < 6:
num2 = 4
else:
num2 = 2
x = num2 * num1 + 1
print (x,x%7)
A. 21 3
B. 21 0
C. 21 21
D. none of the others
Answer B. 21 0
4. The three types of error that might be contained in a Python program are syntax, logic and run-time.
A. True
B. False
Answer: A. True
5. What is an algorithm?
A. a keyword of the Python language
B. a Python built-in function
C. a Boolean operator
D. a written description of the steps to solve a problem
Answer: D. a written description of the steps to solve a problem.
6. A computer program is the implementation of an algorithm.
A. True
B. False
Answer: A. True
7. What is the data type of a value such as 3.142?
A. float
B. string
C. int
D. Boolean
Answer: A. float
8. What is the data type of a value such as 3?
A. float
B. string
C. int
D. Boolean
Answer: C. int
9. What is the data type of a value such as "anne was here"?
A. float
B. string
C. int
D. Boolean
Answer: B. string
10. What is the output when the following code is executed?
list1 = [2,4,6,8,10,12,14,16,18,20]
print (list1[0:1],list1[5:7])
Answer:
A. [2,4] [10, 12]
B. [2,4] [12, 14]
C. [2] [12, 14]
D. [2] [10, 12, 14]
Answer: C. [2] [12, 14]
11. (Short answer) Write the truth table for the not Boolean operator.
Answer:
value of A not A
false true
true false
12. (Short answer) List four advantages of using functions in a program.
Answer:
divides the work into teams
makes software development more manageable
enables software reuse
avoids repetition
makes programs more understandable
easier to debug
easier to maintain
easier to test
13. (Short answer) The range built-in (always available) function has this syntax:
range([start,] stop [,step])
Explain this syntax.
Answer:
The stop argument is required, the others are optional.
Repeats to one minus the stop value, in steps of one, unless other step value specifed.
14. (Short answer) Write two lines of Python 3 code that prints "error!" forever when run.
Answer:
while 1:
print ("error!")
15. (Short answer) Give an example of a run-time error.
Answer:
attempt to divide by zero
16. (Short answer) Give an example of a syntax error.
Answer:
attempt to divide by a string object
GPA
===
Your attendance, conduct and progress are monitored throughout the course.
You may inspect your status report at any time using the online Gradebook
The date of the quiz is shown in the course schedule - latest details on C4.
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Good Luck!
AD
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End of document
