CrashCourse Computer Science: Cybersecurity Fundamentals

What is the primary purpose of cybersecurity?

• To speed up computer processes

• To protect data and systems from threats

• To enhance the functionality of applications

• To market security software

What does 'secrecy' in cybersecurity refer to?

• Keeping all data public

• Ensuring data is accessible to everyone

• Restricting data access to unauthorized users

• Allowing only authorized users to access certain data

Which type of attack targets the availability of services?

• Malware infection

• Denial of Service Attack

• Phishing attack

• Data breach

What is a common method to secure a password?

• Writing it down in a public place

• Sharing it with trusted individuals

• Using a mix of characters and symbols

• Using simple, memorable words

What is a recommended practice for creating strong passwords?

• Using common phrases

• Using personal information

• Combining three random words

• Reusing passwords across sites

What is the main disadvantage of biometric authentication?

• It is less secure than passwords

• It requires internet connectivity

• It can't be reset if compromised

• It is too complex to use

What principle does the Bell-LaPadula model enforce?

• No read up, no write down

• Write up, read down

• Read and write equally

• Unrestricted access

What is a key challenge in ensuring software security?

• Lack of skilled professionals

• High cost of security software

• Potential backdoors in programs

• Over-reliance on outdated technology

What is the purpose of a security kernel?

• To manage user interfaces

• To increase software complexity

• To minimize the code base for security

• To enhance graphical performance

How can sandboxing help in cybersecurity?

• By reducing storage needs

• By increasing processing power

• By encrypting all data

• By isolating compromised programs