Selected MCQ

Current Question
What type of network topology features a single central point with all devices connected to it?
  • A. Bus topology
  • B. Star topology
  • C. Ring topology
  • D. Mesh topology
Correct Answer: B
Explanation:
A star topology connects all nodes to a central hub or switch.
Related Question 1
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.
Related Question 2
In a neural network, why is it important to normalize input features?
  • A. To make the network more complex
  • B. To improve convergence speed and training stability
  • C. To prevent overfitting entirely
  • D. Normalization is not needed
Correct Answer: B
Explanation:
Feature normalization ensures they have similar scales, which helps gradient descent converge faster.
Related Question 3
Which network topology feature is characteristic of a star network?
  • A. Every node is connected to exactly two others in a ring
  • B. All nodes share a common bus
  • C. All nodes are connected to a central hub
  • D. Nodes form a mesh with multiple paths
Correct Answer: C
Explanation:
In a star topology, each node connects to a central hub or switch for communication.
Related Question 4
What allows dynamic network configuration in emerging tech?
  • A. Hardware-only management
  • B. Software Defined Networking (SDN)
  • C. Analog cables
  • D. Static routing only
Correct Answer: B
Explanation:
SDN separates control and data planes, enabling programmable network configurations.
Related Question 5
Which technology is used for secure, short-range wireless communication in IoT devices?
  • A. Wi-Fi
  • B. Bluetooth Low Energy (BLE)
  • C. Ethernet
  • D. 4G LTE
Correct Answer: B
Explanation:
Bluetooth Low Energy is a wireless protocol for low-power short-range communication.