WorksheetsData Abstraction Quiz
Total questions: 19
Worksheet time: 11mins
What is data abstraction?
A technique for compressing data
A way to encrypt data for security
A method of storing data in a database
A process of hiding implementation details and exposing only necessary aspects
Which of the following is NOT a way data abstraction is commonly achieved?
Encapsulation
Data Encryption
Data Structures
Classes
In the movie recommendation system example, what data structure is used to represent movies?
List of dictionaries
Set of tuples
Array of strings
Queue of objects
What does data abstraction separate?
The data from the user
The code from the compiler
The what (interface) from the how (implementation)
The input from the output
Why is data abstraction important?
It makes data more complex
It increases the size of the program
It reduces the speed of execution
It simplifies code and hides unnecessary complexity
Which of the following is an example of encapsulation?
Compressing data to save space
Combining data and operations into a single unit
Storing data in a cloud server
Encrypting data for security
What is a real-world analogy for data abstraction?
A computer monitor
A car engine
A book
A remote control
What aspect of a remote control represents the interface in data abstraction?
The circuit board
Buttons for volume, power, and channels
The battery compartment
The infrared signals
How does data abstraction improve reusability?
By increasing the complexity of the data
By making the code longer
By allowing the same abstraction to be reused in different parts of the program
By reducing the number of functions
What does data abstraction enhance in terms of software development?
Maintainability
Execution time
Data size
User interface design
Which of the following is a benefit of data abstraction?
Reduces data security
Complicates the code
Supports modularity
Increases data redundancy
What is hidden in the movie recommendation system example?
How the dictionary is implemented internally
The genre of each movie
The ratings of the movies
The list of movie titles
What is the main focus of data abstraction?
How the data is stored
What the data represents
The size of the data
The speed of data processing
Which of the following is NOT a component of data abstraction?
Data encryption
Interfaces
Encapsulation
Data structures
What is the purpose of hiding implementation details in data abstraction?
To complicate the user interface
To simplify the use of data
To make data processing slower
To increase data size
An act of representing the essential features without including the background details or explanations.
(a)
A school is developing a program to keep track of information about students and their class schedules. In which of the following instances would a data abstraction be most helpful?
The program includes individual variables to store the names of each student rather than a single list of students.
A program includes multiple comments that could be combined into a single comment
A program includes repeated programming statements that could be moved inside a loop
A program includes repeated code that could be moved inside a function.
Avni is learning about an act of representing the essential features without including the background details or explanations. What is this concept called?
(a)
