AP Computer Science Principles - Unit 1-
3 Study Guide Rated A+
What is the purpose of a `flowchart` in the context of programming?
✔✔ A flowchart is a visual representation of an algorithm or process. It uses symbols and arrows
to illustrate the flow of control through different steps, helping to plan, understand, and
communicate the logic of a program.
Define `big data` and explain why it is significant in modern computing.
✔✔ Big data refers to extremely large data sets that are too complex to be processed by
traditional data processing software. It is significant because it allows for advanced analytics,
machine learning, and decision-making, enabling organizations to gain insights and make data-
driven decisions.
What is the difference between `symmetric` and `asymmetric encryption`?
1
, ✔✔ Symmetric encryption uses the same key for both encryption and decryption, while
asymmetric encryption uses a pair of keys—a public key for encryption and a private key for
decryption. Asymmetric encryption is often used for secure communications over the Internet.
Explain the concept of `digital divide` and its impact on society.
✔✔ The digital divide refers to the gap between individuals and communities that have access to
modern information and communication technology and those that do not. It impacts society by
creating inequalities in education, employment opportunities, and access to essential services.
What is an `API`, and how is it used in software development?
✔✔ An API (Application Programming Interface) is a set of tools, definitions, and protocols that
allow different software programs to communicate with each other. APIs enable developers to
use predefined functions to interact with external services or components, making development
more efficient.
Describe the difference between `lossy` and `lossless` compression.
2
3 Study Guide Rated A+
What is the purpose of a `flowchart` in the context of programming?
✔✔ A flowchart is a visual representation of an algorithm or process. It uses symbols and arrows
to illustrate the flow of control through different steps, helping to plan, understand, and
communicate the logic of a program.
Define `big data` and explain why it is significant in modern computing.
✔✔ Big data refers to extremely large data sets that are too complex to be processed by
traditional data processing software. It is significant because it allows for advanced analytics,
machine learning, and decision-making, enabling organizations to gain insights and make data-
driven decisions.
What is the difference between `symmetric` and `asymmetric encryption`?
1
, ✔✔ Symmetric encryption uses the same key for both encryption and decryption, while
asymmetric encryption uses a pair of keys—a public key for encryption and a private key for
decryption. Asymmetric encryption is often used for secure communications over the Internet.
Explain the concept of `digital divide` and its impact on society.
✔✔ The digital divide refers to the gap between individuals and communities that have access to
modern information and communication technology and those that do not. It impacts society by
creating inequalities in education, employment opportunities, and access to essential services.
What is an `API`, and how is it used in software development?
✔✔ An API (Application Programming Interface) is a set of tools, definitions, and protocols that
allow different software programs to communicate with each other. APIs enable developers to
use predefined functions to interact with external services or components, making development
more efficient.
Describe the difference between `lossy` and `lossless` compression.
2
