Question 1

Which real-world item best represents a hierarchical collection?

Accepted Answer

A)   a queue of customers
B)   wiring diagrams
C)   a box of legos
D)   a family treeE) A) and B)
F) A) and C)

Question 2

The map, filter, and reduce functions can only be used on list collections.

Accepted Answer

A) True 
 B)False

Question 3

Which statement is true about a sorted collection?

Accepted Answer

A)   must be ordered by position
B)   they need not be linear
C)   searching is inefficient
D)   a box of donuts is an exampleE) A) and C)
F) A) and B)

Question 4

Which of the following is an unordered collection?

Accepted Answer

A)   string
B)   stack
C)   dictionary
D)   queueE) All of the above
F) A) and D)

Question 5

What is the value of c after the following code executes?
A = [ 10, 20, 30 ]
B = [ 40, 50, 60 ]
C = a + b

Accepted Answer

A)   [ 50, 70, 90 ]
B)   {[ 10, 20, 30 ], [ 40, 50, 60 ]}
C)   [ 10, 20, 30, 40, 50, 60 ]
D)   ([ 10, 40 ], [ 20, 50 ], [ 30, 60 ]) E) A) and D)
F) A) and C)

Question 6

The use of collections is a Python programming requirement, but they are not very useful for working with real-world objects.

Accepted Answer

A) True 
 B)False

Question 7

Python includes two implementations of lists: arrays and linked lists.

Accepted Answer

A) True 
 B)False

Question 8

If you clone an object using the = operator (as in myList=list(yourList) ), the is operator returns True while the == operator returns False.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following is true about Python collections?

Accepted Answer

A)   most can be heterogeneous
B)   all are homogeneous
C)   they are typically static
D)   all are immutable object typesE) None of the above
F) B) and C)

Question 10

A tuple is an immutable collection type.

Accepted Answer

A) True 
 B)False

Question 11

When using a for loop to iterate over a list, the items are visited in no particular order.

Accepted Answer

A) True 
 B)False

Question 12

A sorted collection must be in a linear structure, ordered by position.

Accepted Answer

A) True 
 B)False

Question 13

Use the & operator to concatenate two collections.

Accepted Answer

A) True 
 B)False

Question 14

Which operator is used to obtain a string representation of a collection?

Accepted Answer

A)   len
B)   char
C)   str
D)   inE) A) and B)
F) B) and D)

Question 15

What is the value of aList after the following code is executed?
AList = [ 10, 20, 30 ]
AList.pop()

Accepted Answer

A)   [ 10, 20, 30 ]
B)   [ 10,20 ]
C)   [ ]
D)   [ 20, 30 ]E) B) and C)
F) None of the above

Question 16

What is the value of myObject after the following code executes?
YourObject = "Hi"
MyObject = tuple(yourObject)

Accepted Answer

A)   ('H', 'i') 
B)   [ "H", "i" ]
C)   (Hi) 
D)   ("Hi") E) All of the above
F) B) and C)

Question 17

In Python, modules and methods are the smallest units of abstraction, classes are the next in size, and functions are the largest.

Accepted Answer

A) True 
 B)False  False

Question 18

Which of the following is a special case of type conversion, where the two collections are of the same type?

Accepted Answer

A)   replacing
B)   copying
C)   duplicating
D)   cloningE) A) and D)
F) C) and D)

Question 19

A set is a built-in Python collection type.

Accepted Answer

A) True 
 B)False  True

Question 20

When a for loop is used to iterate over a collection, which statement is true?

Accepted Answer

A)   list items are visited from last to first
B)   items in a list are visited in a random order
C)   items in a sorted collection are visited in ascending order
D)   items in a dictionary are visited in descending orderE) A) and B)
F) B) and C) C

Exam 2: An Overview of Collections

Which real-world item best represents a hierarchical collection?

Correct AnswerverifiedShow Answer

The map, filter, and reduce functions can only be used on list collections.

Correct AnswerverifiedShow Answer

Which statement is true about a sorted collection?

Correct AnswerverifiedShow Answer

Which of the following is an unordered collection?

Correct AnswerverifiedShow Answer

What is the value of c after the following code executes? A = [ 10, 20, 30 ] B = [ 40, 50, 60 ] C = a + b

Correct AnswerverifiedShow Answer

The use of collections is a Python programming requirement, but they are not very useful for working with real-world objects.

Correct AnswerverifiedShow Answer

Python includes two implementations of lists: arrays and linked lists.

Correct AnswerverifiedShow Answer

If you clone an object using the = operator (as in myList=list(yourList) ), the is operator returns True while the == operator returns False.

Correct AnswerverifiedShow Answer

Which of the following is true about Python collections?

Correct AnswerverifiedShow Answer

A tuple is an immutable collection type.

Correct AnswerverifiedShow Answer

When using a for loop to iterate over a list, the items are visited in no particular order.

Correct AnswerverifiedShow Answer

A sorted collection must be in a linear structure, ordered by position.

Correct AnswerverifiedShow Answer

Use the & operator to concatenate two collections.

Correct AnswerverifiedShow Answer

Which operator is used to obtain a string representation of a collection?

Correct AnswerverifiedShow Answer

What is the value of aList after the following code is executed? AList = [ 10, 20, 30 ] AList.pop()

Correct AnswerverifiedShow Answer

What is the value of myObject after the following code executes? YourObject = "Hi" MyObject = tuple(yourObject)

Correct AnswerverifiedShow Answer

In Python, modules and methods are the smallest units of abstraction, classes are the next in size, and functions are the largest.

Correct AnswerverifiedFalse

Which of the following is a special case of type conversion, where the two collections are of the same type?

Correct AnswerverifiedShow Answer

A set is a built-in Python collection type.

Correct AnswerverifiedTrue

When a for loop is used to iterate over a collection, which statement is true?

Correct AnswerverifiedC

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False

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True

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C