chapter 2 week 4 quiz

chapter2 week4 quiz

Quiz

 

1. Which of the following is a comment in Python?
   1.   // This is a test
   2.   /* This is a test */
   3.   * This is a test
   4.   # This is a test
2. In the following code,
   x = 42
   What is "x"?
   1.   A function
   2.   A variable
   3.   A Central Processing Unit
   4.   A constant
3. Which of the following variables is the "most mnemonic"?
   
   1.   variable_173
   2.   x1q3z9ocd
   3.   x
   4.   hours
4. Which of the following is not a Python reserved word?
   
   1.   speed
   2.   else
   3.   for
   4.   if
5. Assume the variable x has been initialized to an integer value (e.g., x = 3). What does the following statement do?
   x = x + 2
   1.   Retrieve the current value for x, add two to it and put the sum back into x
   2.   This would fail as it is a syntax error
   3.   Create a function called "x" and put the value 2 in the function
   4.   Exit the program
6. Which of the following elements of a mathematical expression in Python is evaluated first?
   
   1.   Multiplication *
   2.   Addition +
   3.   Parentheses ( )
   4.   Subtraction -
7. What is the value of the following expression
   42 % 10
   Hint - the "%" is the remainder operator
   
   1.   42
   2.   420
   3.   2
   4.   4210
8. What will be the value of x after the following statement executes:
   x = 1 + 2 * 3 - 8 / 4
   
   1.   4
   2.   15
   3.   5.0
   4.   3.0
9. What will be the value of x when the following statement is executed:
   x = int(98.6)
   1.   98
   2.   6
   3.   100
   4.   99
10. What does the Python input() function do?
    1.   Pause the program and read data from the user
    2.   Connect to the network and retrieve a web page.
    3.   Read the memory of the running program
    4.   Take a screen shot from an area of the screen