AP Computer Science Principles Exam (Units 1 through 4) 100% Pass
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Course
AP Computer Science Principles
Institution
AP Computer Science Principles
AP Computer Science Principles Exam
(Units 1 through 4) 100% Pass
What is the purpose of `IP addresses`?
IP addresses identify devices on the Internet and allow them to communicate with each
other.
What does `DNS` do?
DNS translates domain names (like ) into IP addresses so browse...
AP Computer Science Principles Exam
(Units 1 through 4) 100% Pass
What is the purpose of `IP addresses`?
✔✔ IP addresses identify devices on the Internet and allow them to communicate with each
other.
What does `DNS` do?
✔✔ DNS translates domain names (like google.com) into IP addresses so browsers can load
websites.
What is `packet switching`?
✔✔ Packet switching breaks data into small packets that travel across networks independently,
then reassemble at the destination.
What is `binary` and why is it used in computers?
1
, ✔✔ Binary is a base-2 number system using 0s and 1s. Its used because computers operate using
two states: on (1) and off (0).
How does `data compression` help?
✔✔ Data compression reduces the size of files so they take up less storage and transfer faster.
What is the difference between `lossy` and `lossless` compression?
✔✔ Lossy compression reduces file size by removing some data (e.g., JPEG), while lossless
keeps all the data (e.g., ZIP files).
What is an `algorithm`?
✔✔ An algorithm is a step-by-step set of instructions for solving a problem.
Why are `loops` important in programming?
2
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