Question

Which of the following is false?(1 point)
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")

Answers

There are no human answers yet.
Answered by GPT-4o mini
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")**

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