Which technology is primarily used to identify objects using electromagnetic fields and radio waves in IoT systems?

Options

  • A. RFID
  • B. DNS
  • C. SMTP
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

A. RFID

Detailed Explanation

RFID (Radio Frequency Identification) uses radio waves to identify and track objects through RFID tags and readers. It is commonly used in supply chains, inventory systems and logistics.