APCSP Abstraction Concepts 3

Question 1

Which of the following is NOT a benefit of using abstractions in programming?

Accepted Answer

Eliminating all possible bugs automatically

Answer

Reducing code complexity

Answer

Making programs easier to maintain

Answer

Allowing code reuse across different programs

Question 2

The Internet Protocol (IP) is an abstraction that lets applications send data without worrying about the physical network. Which layer of the internet abstraction stack does IP belong to?

Accepted Answer

Internet layer

Answer

Application layer

Answer

Transport layer

Answer

Physical layer

Question 3

A programmer writes a `Car` object with properties `speed` and `fuel` and a method `accelerate()`. Users of the object call `accelerate()` without knowing the engine physics. This is an example of:

Accepted Answer

Object abstraction / encapsulation

Answer

Sequencing

Answer

Iteration

Answer

Boolean logic

Question 4

What does it mean for an abstraction to 'leak'?

Accepted Answer

Details that should be hidden become visible and must be handled by the user

Answer

The abstraction uses too much memory

Answer

The program crashes at runtime

Answer

The source code is accessible to end users

Question 5

In AP CSP, which of the following best represents a 'high-level' abstraction compared to a 'low-level' one?

Accepted Answer

Python code vs. machine code

Answer

Machine code vs. transistor switching

Answer

Binary digits vs. electrical voltages

Answer

Assembly language vs. Python code

Question 6

When a programmer uses a variable name like `totalScore` instead of a memory address, they are using:

Accepted Answer

A naming abstraction that hides the physical memory location

Answer

A hardware interrupt

Answer

A loop construct

Answer

A Boolean expression

Question 7

Which of the following scenarios demonstrates abstraction being used to solve a problem?

Accepted Answer

A programmer calls `displayMap(city)` without knowing how the map is rendered

Answer

A programmer memorizes all 10,000 lines of a library's source code before using it

Answer

A programmer avoids using functions to keep code in one place

Answer

A programmer uses only global variables to share data