Internet of Things (IoT) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Internet of Things (IoT) Exam with comprehensive quizzes. Utilize flashcards and multiple choice questions, each with hints and explanations. Get set for success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the maximum range allowed by NFC technology?

20 cm
More than 20 cm
Less than 20 mm
More than 20 mm

The correct answer is: 20 cm

NFC, or Near Field Communication, is a type of wireless communication technology that allows devices to exchange data over very short distances. The maximum range allowed by NFC technology is indeed about 20 cm. This ultra-short-range capability is a defining feature of NFC, as it is designed to facilitate secure transactions and data exchanges between devices that are in very close proximity to one another. The rationale behind this limited range is primarily focused on enhancing security and ensuring that the exchange occurs only when devices are intentionally brought close together, reducing the risk of eavesdropping or accidental connections. This characteristic is particularly important for applications like contactless payments, access control, and secure data transfers. In contrast, options that suggest a range greater than 20 cm or less than 20 mm do not align with the operational principles of NFC technology. Such proposals would imply a fundamental misunderstanding of how NFC is designed to function, which prioritizes proximity as a core aspect of its use cases.