APCSP Abstraction Concepts 2

Question 1

Which of the following best describes a 'procedural abstraction'?

Accepted Answer

Hiding the implementation details of a procedure behind a named call

Answer

Storing data in a variable for later use

Answer

Using a loop to repeat a block of code

Answer

Converting a program from one language to another

Question 2

A programmer creates a function called `calculateTax(income)` so that other parts of the program don't need to know the tax formula. This is an example of:

Accepted Answer

Procedural abstraction

Answer

Data abstraction

Answer

Binary representation

Answer

Sequencing

Question 3

Which statement about layers of abstraction in computing is TRUE?

Accepted Answer

Higher layers hide the complexity of lower layers

Answer

Each layer must expose all details to the layer above it

Answer

Abstraction layers increase the amount of code a programmer must write

Answer

Only hardware can define abstraction layers

Question 4

In the context of AP CSP, what is a 'model' as a form of abstraction?

Accepted Answer

A simplified representation that captures only relevant features

Answer

An exact copy of a real-world system

Answer

A machine-language translation of source code

Answer

A graphical user interface

Question 5

Which of the following is an example of data abstraction?

Accepted Answer

Using a list to represent a collection of student scores without specifying how the list is stored in memory

Answer

Writing a loop that iterates 10 times

Answer

Compiling source code into machine code

Answer

Debugging a program with a step-through debugger

Question 6

Why do programmers use abstraction when building large software systems?

Accepted Answer

To manage complexity by hiding unnecessary details

Answer

To make programs run faster by removing all function calls

Answer

To ensure programs can only run on one type of hardware

Answer

To prevent other developers from reading the code

Question 7

A library provides a function `sortList(list)` that sorts any list. The programmer using the library does not know whether it uses bubble sort or merge sort. This illustrates:

Accepted Answer

Abstraction — the implementation details are hidden behind an interface

Answer

The programmer has no information about the function

Answer

A syntax error in the library

Answer

Binary search being applied to a list