Selected MCQ

Current Question
What is the purpose of a confusion matrix?
  • A. To store model weights
  • B. To summarize classification performance
  • C. To distribute data across GPUs
  • D. To reduce dimensionality
Correct Answer: B
Explanation:
A confusion matrix shows true vs predicted class counts, summarizing classification performance.
Related Question 1
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
Correct Answer: B
Explanation:
Penetration testing involves ethically attacking a system to find weaknesses.
Related Question 2
What is the purpose of a VPN?
  • A. To improve the Wi-Fi signal
  • B. To securely encrypt and route internet traffic
  • C. To store backup data online
  • D. To speed up downloads
Correct Answer: B
Explanation:
A VPN encrypts internet traffic and routes it through a secure server, protecting privacy.
Related Question 3
What is the purpose of a 'validation set' during model training?
  • A. To train the model parameters
  • B. To evaluate the final model performance
  • C. To tune hyperparameters and avoid overfitting
  • D. To serve as training data
Correct Answer: C
Explanation:
The validation set is used to tune hyperparameters and detect overfitting during training.
Related Question 4
What is the main purpose of a type-1 (bare-metal) hypervisor?
  • A. Runs on an OS to host VMs
  • B. Directly runs on hardware to host VMs
  • C. Monitors network traffic
  • D. Provides antivirus protection
Correct Answer: B
Explanation:
A type-1 hypervisor runs directly on hardware (bare metal) to host virtual machines.
Related Question 5
What is the purpose of a firewall in network security?
  • A. To block unauthorized access based on rules
  • B. To store sensitive data
  • C. To physically connect network cables
  • D. To encrypt Wi-Fi connections
Correct Answer: A
Explanation:
Firewalls monitor and filter incoming/outgoing network traffic using security rules.