"PROUDLY PROVIDING FREE LEARNING MATERAIL FOR COMPUTER SCIENCE STUDENTS AND TEACHERS ACROSS THE GLOBE"

CHECK YOUR KNOWLEDGE
Throughout this site we have a selection of quizzes and examination style questions for you to check your knowledge. 
QUICK QUIZ !!!

Which technology is used to secure data during transmission over the internet?

A: Symmetric Key Encryption
B: Asymmetric Key Encryption
C: Plaintext Transfer
D: None of the above
EXPLANATION
  • Correct Answer: B) Asymmetric Key Encryption
Explanation: Asymmetric key encryption, also known as public-key cryptography, uses two keys: a public key to encrypt data and a private key to decrypt it. This method is widely used in protocols like HTTPS to secure communications on the internet, such as online banking or shopping. While symmetric encryption uses the same key for both encryption and decryption, asymmetric encryption provides an added layer of security, especially when the public key can be openly distributed. It is the foundation for most secure internet communications, particularly with protocols such as SSL/TLS.
QUICK QUIZ !!!

Find the error in the following Python code:

def greet()
    print("Hello, World!")
A: Missing colon (:) after def greet()
B: Incorrect print syntax
C: Missing parentheses in def greet
D: Indentation error in print statement
EXPLANATION
Correct Answer: A) Missing colon (:) after def greet()
​
Explanation: In Python, a colon (:) is required after defining a function with the def keyword. Without this, Python raises a syntax error because it expects the colon to indicate the start of the function's block. The corrected code should look like this:
def greet():
     print("Hello, World!")

​Python relies heavily on proper syntax and indentation, which is crucial for defining the structure and scope of code blocks.
QUICK QUIZ !!!

Who is widely credited with inventing the internet?

A: Steve Jobs
B: Tim Berners-Lee
C: Bill Gates
D: Vint Cerf
EXPLANATION
Correct Answer: D) Vint Cerf
​
Explanation: Vint Cerf, along with Robert Kahn, is credited with developing the TCP/IP protocol, which is fundamental to how the modern internet works. They created a method that allowed different types of networks to communicate with each other, leading to the development of the global internet. Although Tim Berners-Lee invented the World Wide Web, which sits on top of the internet, Vint Cerf is often referred to as one of the "fathers of the internet" for his work in the underlying technology that connects computers worldwide.
QUICK QUIZ !!!

Which technology was crucial for the Mars rover's communication with Earth?

A: Quantum Computing
B: 5G Networks
C: Radio Frequency Transmission
D: Satellite Laser Communication
EXPLANATION
Correct Answer: C) Radio Frequency Transmission
​Explanation: The Mars rovers use radio frequency (RF) transmission to communicate with Earth. The rover sends data to orbiters around Mars, which relay the information back to Earth using RF waves. Given the vast distance between Mars and Earth, high-frequency radio signals, particularly X-band frequencies, are ideal for long-distance communication through space. The Deep Space Network (DSN) of Earth-based antennas then receives these signals, allowing scientists to receive images, data, and operational commands from the rovers on Mars.
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IB COMPUTER SCIENCE 2025 CASE STUDY | THE PERFECT CHATBOT

This year's case study focuses on "The Perfect Chatbot," implemented by the RAKT Insurance Company. This case study is a crucial component of your IB Computer Science course and will be assessed in the higher level paper 3 exams
2025 - PAPER 3 SAMPLE PAPERS
CONTENT - 2025 CASE STUDY | THE PERFECT CHATBOT
ABOUT THE CASE STUDY
​CASE STUDY RELATED VIDEOS
LATENCY
LINGUISTIC NUANCES
ARCHITECTURE
DATASET
PROCESSING POWER
ETHICAL CHALLENGES
FURTHER RESEARCH
TERMINOLOGY
FLIP CARDS
SAMPLE PAPERS
USEFUL LINKS
SAMPLE ANSWERS

IB COMPUTER SCIENCE REVISION | REVISION CARDS

WEB SCIENCE | REVISION CARDS
EXAMPLE FLIP CARDS
KEY TERMINOLOGY GAMES
Throughout this site we have a selection of blocky games that give you a break and help reenforce your topic terminology. With each game the code is provided, and you are welcome to download and modify for yourself.
  • TIME FOR A QUICK GAME !!!
  • THE CODE FOR THIS GAME
<
>
BAT AND BALLS !!!
POINTS: 0 | KEY TERM:
Game Over!
Start Game
  • TIME FOR A QUICK GAME !!!
  • THE CODE TO THIS GAME
<
>
Start Block Breaker
COMPUTER SCEINCE CAFE | BLOCKY TERMS

    







        

    










 

            

        

        

            

	

    

        
COMPUTER SCIENCE CAFE | BAT AND BALL

    

    

        

    







        

    








	    

	










	

		
			

				
					
						





					
										
					
						





					
									

		
	









	

	

	    

	        
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