Question

Which of the following technology does not use the standard 2.4 GHz ISM band ?
a. ZigBee
b. Bluetooth c. NFC
d. 6LowPAN

Answer 1

Answer:

NFC

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Answer 2

The correct answer is (c) NFC

Near-field communication (NFC) is a bunch of communication conventions that empowers communication between two electronic gadgets over a distance of 4 cm (11⁄2 in) or less.

• NFC offers a low-speed association through a straightforward arrangement that can be utilized to bootstrap more-proficient remote associations.
• NFC gadgets can go about as electronic personality archives and keycards.
• They are utilized in contactless frameworks and permit versatile supplanting or enhancing frameworks, for example, Mastercards and electronic ticket cards.
• These are now and again called NFC/CTLS or CTLS NFC, with contactless curtailed as CTLS. NFC can be utilized to share little documents like contacts and for bootstrapping quick associations with share bigger media, for example, photographs, recordings, and different documents.