Which of the following is false?(1 point)

Question

Responses

A heap must be manually managed.
A heap must be manually managed.

A stack uses a last in, first out (LIFO) approach
A stack uses a last in, first out (LIFO) approach

A heap is generally faster than a stack.
A heap is generally faster than a stack.

A stack automatically deallocates space when variables are no longer needed.
A stack automatically deallocates space when variables are no longer needed.
Question 2
True or False? In Python, a file is always automatically closed for you after you are done reading it or writing to it.(1 point)
Responses

True
True

False
False
Question 3
What type of file is best for storing discrete items that are stored in rows?(1 point)
Responses

CSV
CSV

text
text

Python
Python

Document
Document
Question 4
Which of the following is the correct way to instantiate an object belonging to the user-defined class Dog that has attributes of name and breed? (1 point)
Responses

pet = new Dog("Fido", "puppy", "Dalmatian")
pet = new Dog("Fido", "puppy", "Dalmatian")

dog = new Dog(self, "Oscar", "Lab")
dog = new Dog(self, "Oscar", "Lab")

dog = Dog(self, "Buddy", "Boxer")
dog = Dog(self, "Buddy", "Boxer")

pet = Dog("Spot", "Dalmatian")

Answer 1

Let's go through each question and identify the correct responses.

Question 1: Which of the following is false?

1. A heap must be manually managed. - True, in languages like C/C++, memory management in the heap needs to be done manually.
2. A stack uses a last in, first out (LIFO) approach. - True, that's the definition of a stack.
3. A heap is generally faster than a stack. - False, a stack is generally faster than a heap because stack allocations and deallocations are simpler and more efficient.
4. A stack automatically deallocates space when variables are no longer needed. - True, this happens when the function call scope ends.

Answer to Question 1: A heap is generally faster than a stack. (This statement is false.)

Question 2: True or False? In Python, a file is always automatically closed for you after you are done reading it or writing to it.

• Answer: False. In Python, if you do not explicitly close the file or use a with statement, the file will not be automatically closed.

Question 3: What type of file is best for storing discrete items that are stored in rows?

• Answer: CSV. CSV (Comma-Separated Values) files are specifically designed to store tabular data in rows.

Question 4: Which of the following is the correct way to instantiate an object belonging to the user-defined class Dog that has attributes of name and breed?

1. pet = new Dog("Fido", "puppy", "Dalmatian") - Incorrect syntax (Python does not use new).
2. dog = new Dog(self, "Oscar", "Lab") - Incorrect syntax (also includes self incorrectly in this context).
3. dog = Dog(self, "Buddy", "Boxer") - Incorrect; similar to above regarding self.
4. pet = Dog("Spot", "Dalmatian") - Correct, assuming the class Dog has a constructor that takes the name and breed as parameters.

Answer to Question 4: pet = Dog("Spot", "Dalmatian").

Summary of Answers

1. False: A heap is generally faster than a stack.
2. False
3. CSV
4. pet = Dog("Spot", "Dalmatian")