chapter 8 week 4 quiz

chapter 8 week 4 quiz

Quiz

 

1. How are "collection" variables different from normal variables?
   
   1.   Collection variables merge streams of output into a single stream
   2.   Collection variables can store multiple values in a single variable
   3.   Collection variables can only store a single value
   4.   Collection variables pull multiple network documents together
2. What are the Python keywords used to construct a loop to iterate through a list?
   
   1.   try / except
   2.   def / return
   3.   foreach / in
   4.   for / in
3. For the following list, how would you print out 'Sally'?
   friends = [ 'Joseph', 'Glenn', 'Sally' ]
   1.   print(friends[2])
   2.   print(friends[2:1])
   3.   print friends[3]
   4.   print(friends['Sally'])
4. What would the following Python code print out?
   fruit = 'Banana'
   fruit[0] = 'b'
   print(fruit)
   1.   Banana
   2.   banana
   3.   Nothing would print - the program fails with a traceback error
   4.   b
5. Which of the following Python statements would print out the length of a list stored in the variable data?
   
   1.   print(data.length())
   2.   print(length(data))
   3.   print(strlen(data))
   4.   print(len(data))
6. What type of data is produced when you call the range() function?
   x = list(range(5))
   1.   A string
   2.   A list of characters
   3.   A list of words
   4.   A list of integers
7. What does the following Python code print out?
   a = [1, 2, 3]
   b = [4, 5, 6]
   c = a + b
   print(len(c))
   1.   6
   2.   21
   3.   [1,2,3]
   4.   [1,2,3,4,5,6]
8. Which of the following slicing operations will produce the list [12, 3]?
   t = [9, 41, 12, 3, 74, 15]
   1.   t[:]
   2.   t[1:3]
   3.   t[12:3]
   4.   t[2:4]
9. What list method adds a new item to the end of an existing list?
   
   1.   pop()
   2.   append()
   3.   add()
   4.   index()
10. What will the following Python code print out?
    friends = [ 'Joseph', 'Glenn', 'Sally' ]
    friends.sort()
    print(friends[0])
    1.   Glenn
    2.   Joseph
    3.   Sally
    4.   friends