Cybersecurity Quiz

What is the primary goal of confidentiality in computer security?

• Protecting information from unauthorized access.

• Ensuring data is accurate and not tampered with.

• Verifying the identity of a user.

• Ensuring actions are traceable to an individual.

Which of the following is an example of a passive attack?

• Eavesdropping on communication channels.

• Spoofing communication data.

• Launching a denial of service attack.

• Introducing malware into a system.

What does the term "non-repudiation" refer to in security services?

• Assurance that someone cannot deny their actions.

• Ensuring data has not been altered.

• Verifying the identity of a user.

• Enforcing rules on what actions users can perform.

Which cryptographic technique uses the same key for both encryption and decryption?

• Symmetric Key Encryption

• Asymmetric Key Encryption

• Public Key Infrastructure

• Hash Functions

What is the main difference between block ciphers and stream ciphers?

• Block ciphers encrypt fixed-size blocks of data, while stream ciphers encrypt data bit by bit.

• Block ciphers use asymmetric keys, while stream ciphers use symmetric keys.

• Block ciphers are faster than stream ciphers.

• Block ciphers are used for digital signatures, while stream ciphers are not.

What is the definition of asymmetric key cryptography?

• Uses a single key for encryption and decryption.

• Uses a pair of keys, one public and one private.

• Uses multiple keys for each session.

• Uses no keys, only passwords.

Which of the following is a public-key cryptography algorithm?

• SHA-256

• MD5

• RSA

• AES

What is the purpose of hash functions?

• Encrypt data for secure transmission.

• Convert input data into a fixed-size string (hash).

• Generate random numbers for encryption.

• Authenticate users with passwords.

Which of the following is an example of biometric authentication?

• Passwords

• Smart cards

• Fingerprint recognition

• OTPs

What is a vulnerability of password authentication?

• Difficult to forge

• False positives/negatives

• Can be weak, reused, or stolen

• Requires physical tokens