CrashCourse Computer Science: Cybersecurity Quiz

Why is cybersecurity compared to physical security measures like locks and fences?

• Because both are used to improve computer performance.

• Because both are used to enhance the speed of communication.

• Because both aim to minimize crime and harm.

• Because both are used to protect against natural disasters.

What is an attack on the secrecy of a computer system?

• A hacker installing malware.

• A hacker overloading a website with fake requests.

• A hacker sending emails as you.

• A hacker revealing credit card information.

What does a threat model help security experts to do?

• Improve computer speed.

• Design new software.

• Prepare against specific threats.

• Predict the weather.

Which of the following is an example of 'what you know' authentication?

• Fingerprint scanner.

• Physical key.

• Username and password.

• Smartphone.

Why are longer and more complex passwords recommended?

• They are cheaper to implement.

• They are easier to remember.

• They are more fun to create.

• They are harder for computers to guess.

What is the main advantage of 'what you have' authentication?

• It is not guessable.

• It requires no physical presence.

• It is always free.

• It is always secure.

What is the Bell-LaPadula model primarily concerned with?

• Enhancing user experience.

• Ensuring data availability.

• Preventing unauthorized data access.

• Improving system performance.

What is the purpose of Access Control Lists (ACL)?

• To speed up computer processes.

• To describe what access each user has.

• To store user passwords.

• To improve internet connectivity.

What is the principle of isolation in cybersecurity?

• Ensuring all programs run together.

• Increasing the number of users on a system.

• Limiting damage when a program is compromised.

• Sharing data between all applications.

Why is independent verification and validation important in security code?

• It makes the code run faster.

• It helps find bugs that original developers might miss.

• It ensures the code is always perfect.

• It reduces the cost of development.