🏠 Home
← Back Start Quiz
MCQ Practice

Technological Knowledge MCQs

What is 'Proof of Stake' consensus primarily known for?

  • A. Requiring hardware to solve puzzles
  • B. Assigning validation rights based on stake held
  • C. Using artificial intelligence
  • D. Being unsecure
Explanation:
Proof of Stake grants block validation rights to holders of cryptocurrency stake, using much less energy than PoW.

What does a 'smart contract' on a blockchain enable?

  • A. Self-executing code enforcing an agreement
  • B. Creating private keys
  • C. Consensus mining
  • D. Physical shipping
Explanation:
Smart contracts are code on a blockchain that execute actions when conditions are met.

What is a block in blockchain composed of?

  • A. A list of IP addresses
  • B. A set of recent transactions and a reference to the previous block
  • C. A dictionary of passwords
  • D. A government-issued certificate
Explanation:
A blockchain block contains a batch of transactions plus a hash linking to the previous block.

Which of these is a best practice for password security?

  • A. Writing passwords on sticky notes
  • B. Using multi-factor authentication
  • C. Reusing the same password everywhere
  • D. Sharing passwords with colleagues
Explanation:
MFA (like combining a password with a code) greatly increases account security.

What does a privilege escalation attack involve?

  • A. Reducing user rights
  • B. Gaining higher-level permissions than authorized
  • C. Changing passwords
  • D. Encrypting network traffic
Explanation:
Privilege escalation is when an attacker obtains higher permissions than they should have.

What is the main purpose of penetration testing?

  • A. Certify devices
  • B. Find and exploit vulnerabilities in a system
  • C. Increase network speed
  • D. Encrypt data
Explanation:
Penetration testing involves ethically attacking a system to find weaknesses.

What is a common use of a security certificate on websites?

  • A. To improve page speed
  • B. To prove domain ownership and enable HTTPS
  • C. To store user data
  • D. To track cookies
Explanation:
SSL/TLS certificates authenticate website identity and enable encrypted HTTPS connections.

What is a firewall rule specifying?

  • A. Allowed or blocked traffic based on criteria
  • B. Encryption algorithm used
  • C. User password
  • D. Backup schedule
Explanation:
Firewall rules define which network traffic is allowed or blocked (e.g., by IP or port).

What is a common method for brute-forcing network passwords?

  • A. SQL injection
  • B. Dictionary attack
  • C. DNS spoofing
  • D. Packet sniffing
Explanation:
A dictionary attack tries many possible passwords from a wordlist to guess credentials.

Which form of encryption uses two separate keys (public and private)?

  • A. Symmetric encryption
  • B. Hashing
  • C. Asymmetric encryption
  • D. Steganography
Explanation:
Asymmetric (public-key) encryption uses one key to encrypt and another to decrypt.