CompTIA ITF+ (FC0-U61) — Question 136

Which of the following wireless technologies has the shortest transmission distance?

Answer options

• A. NFC
• B. IR
• C. Bluetooth
• D. Wi-Fi

Correct answer: B

Explanation

The correct answer is B, IR, as it typically operates over very short distances, often requiring line of sight. NFC (A) also has a short range but is generally designed for communication at a very close range, while Bluetooth (C) and Wi-Fi (D) can transmit over much greater distances.