Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is symmetric key encryption?
💡 Hint: Think about the lock and key analogy.
Question 2
Easy
Give an example of plaintext.
💡 Hint: What does a message look like before it is scrambled?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What type of encryption uses the same key for both encrypting and decrypting?
- Asymmetrical Encryption
- Symmetric Key Encryption
- Hash Encryption
💡 Hint: Think of the lock and key analogy.
Question 2
Is it possible for two parties to establish a common key over a public channel?
- True
- False
💡 Hint: What did we learn about Diffie and Hellman's contributions?
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Explain how an attacker might try to break symmetric key encryption and what measures can be taken to protect against such attacks.
💡 Hint: Consider what makes a key difficult to guess.
Question 2
Using what you've learned about Diffie-Hellman, create a simplified example step-by-step showing how Sita and Ram agree on a key.
💡 Hint: Focus on the steps needed for agreement and remind yourself of what they exchange.
Challenge and get performance evaluation