Selected MCQ

Current Question
Which of these is an example of an Internet of Things (IoT) device?
  • A. Smart thermostat
  • B. Mainframe computer
  • C. Gaming console
  • D. Digital camera
Correct Answer: A
Explanation:
A smart thermostat with internet connectivity and sensors exemplifies an IoT device.
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
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.
Related Question 3
Which IoT protocol operates over UDP and is designed for constrained devices?
  • A. MQTT
  • B. HTTP
  • C. CoAP
  • D. FTP
Correct Answer: C
Explanation:
CoAP (Constrained Application Protocol) is a lightweight RESTful protocol for IoT over UDP.
Related Question 4
Which of the following is an example of Augmented Reality (AR)?
  • A. Oculus VR headset
  • B. Pokemon Go app overlaying images on camera view
  • C. Watching 3D movies
  • D. Using a fitness tracker
Correct Answer: B
Explanation:
Pokémon Go overlays game images onto the real world through a phone camera (AR).
Related Question 5
Which of these is a strong example of a password per security best practices?
  • A. password123
  • B. P@55w0rd
  • C. Qwerty!
  • D. 7h!5Is$tr0ng
Correct Answer: D
Explanation:
A strong password uses a mix of symbols, letters, and numbers in an unpredictable way.