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Question 608 - CISA discussion

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Which of the following technologies has the SMALLEST maximum range for data transmission between devices?

A.
Wi-Fi
Answers
A.
Wi-Fi
B.
Bluetooth
Answers
B.
Bluetooth
C.
Long-term evolution (LTE)
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C.
Long-term evolution (LTE)
D.
Near-field communication (NFC)
Answers
D.
Near-field communication (NFC)
Suggested answer: D

Explanation:

The technology that has the smallest maximum range for data transmission between devices is near-field communication (NFC). NFC is a short-range wireless technology that enables two devices to communicate when they are in close proximity, usually within a few centimeters. NFC is commonly used for contactless payments, smart cards, and device pairing.According to the Bluetooth Technology Website1, the effective range of NFC is less than a meter, while the other technologies have much longer ranges.Wi-Fi can reach up to 100 meters indoors and 300 meters outdoors2.Bluetooth can reach up to 800 feet with Bluetooth 5.0 specification3.Long-term evolution (LTE) can reach up to several kilometers depending on the cell tower and the device4.

5: What is Wi-Fi? - Definition from WhatIs.com

6: Understanding Bluetooth Range | Bluetooth Technology Website

7: What is Bluetooth Range? What You Need to Know

8: How far can LTE signals travel? - Quora

asked 18/09/2024
Hairul Isman Abdul Gaffar
38 questions
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