2.1.1 Thinking Abstractly

Question 1

What is abstraction

Answer 1

Abstraction is the process of separating ideas from reality - in other words, hiding unnecessary detail and showing details that are important in context.

Question 2

The need for abstraction

Answer 2

We often need to remove some details and highlight others to improve the clarity of what we are trying to convey.

Question 3

2 advantages of abstraction

Answer 3

-easier for programmers to focus on the core elements
-reduces the time needed to be spent on the project
-prevents programs from getting unnecessarily large

Question 4

state 2 advantages of using abstraction in programming languages

Answer 4

-easier to remember syntax in high level languages as it is closer to natural language
-coding becomes accessible to beginners

Question 5

how does object oriented programming use abstraction

Answer 5

-objects are an abstraction for real world entities.
-Attributes are an abstraction for the characteristics of an object.
-methods are an abstraction for the actions a real world object is able to perform

Question 6

The difference between abstraction and reality

Answer 6

• Abstraction is a simplified representation of reality

• Real-world values can be stored as variables and constants

• Objects in object-oriented programming are an abstraction for real-world entities

• Attributes represent the characteristics of an object

• Methods represent the actions a real-world object is able to perform

Question 7

give two applications of layers of abstraction

Answer 7

-Networking(TCP/IP)
-programming languages

Question 8

give two applications of layers of abstraction

Answer 8

-Networking(TCP/IP)
-programming languages