Selected MCQ

Current Question
What is the function of DNS in network architecture?
  • A. Converts domain names into IP addresses
  • B. Encrypts internet traffic
  • C. Routes data packets
  • D. Balances network load
Correct Answer: A
Explanation:
DNS (Domain Name System) converts human-readable domain names to IP addresses.
Related Question 1
What is the main function of dropout layers in a neural network?
  • A. Speed up training by skipping layers
  • B. Prevent co-adaptation of neurons to reduce overfitting
  • C. Ensure output is always positive
  • D. Increase network depth
Correct Answer: B
Explanation:
Dropout randomly turns off neurons during training, reducing overfitting.
Related Question 2
What is a primary function of a CDN (Content Delivery Network)?
  • A. To store user credentials
  • B. To distribute content globally with low latency
  • C. To encrypt all network traffic
  • D. To provide cloud compute instances
Correct Answer: B
Explanation:
A CDN replicates content to servers around the world, speeding up access for users.
Related Question 3
What role does the "loss function" serve in training a neural network?
  • A. Generate predictions
  • B. Aggregate features
  • C. Calculate error to guide learning
  • D. Normalize data
Correct Answer: C
Explanation:
The loss function quantifies the difference between predictions and true values, guiding weight adjustments.
Related Question 4
Which activation function is commonly used in hidden layers of deep neural networks due to its ability to mitigate vanishing gradient problems?
  • A. Sigmoid
  • B. Tanh
  • C. ReLU
  • D. Softmax
Correct Answer: C
Explanation:
ReLU (Rectified Linear Unit) is popular for hidden layers because it accelerates convergence by avoiding vanishing gradients.
Related Question 5
Which network tech supports many IoT devices over long ranges?
  • A. Wi-Fi 6
  • B. LoRaWAN
  • C. Bluetooth 5.0
  • D. Ethernet
Correct Answer: B
Explanation:
LoRaWAN is designed for long-range, low-power IoT sensor communications.