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GAQM ISO-IEC-LI Exam - Topic 2 Question 115 Discussion

One of the ways Internet of Things (IoT) devices can communicate with each other (or 'the outside world') is using a so-called short-range radio protocol. Which kind of short-range radio protocol makes it possible to use your phone as a credit card?
A) Near Field Communication (NFC)
B) Bluetooth
C) Radio Frequency Identification (RFID)
D) The 4G protocol

GAQM ISO-IEC-LI Exam - Topic 2 Question 115 Discussion

Actual exam question for GAQM's ISO-IEC-LI exam
Question #: 115
Topic #: 2
[All ISO-IEC-LI Questions]

One of the ways Internet of Things (IoT) devices can communicate with each other (or 'the outside world') is using a so-called short-range radio protocol. Which kind of short-range radio protocol makes it possible to use your phone as a credit card?

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Suggested Answer: A

by Verdell at Jun 27, 2026, 09:26 PM

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Aretha
2 days ago
Agreed! NFC is super convenient for transactions.
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Annabelle
7 days ago
I think it's A) Near Field Communication (NFC). It’s widely used for mobile payments.
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Stefanie
12 days ago
Are we sure NFC is the only option? Seems too simple.
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Tien
17 days ago
RFID is cool, but not for this purpose, right?
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German
22 days ago
Wait, I thought it was Bluetooth?
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Delbert
27 days ago
Totally agree, NFC is the way to go for mobile payments!
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Shawnna
1 month ago
It's definitely A) Near Field Communication (NFC).
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Sunny
1 month ago
I'm leaning towards NFC since it’s specifically designed for short-range communication, especially in transactions.
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Melvin
1 month ago
RFID sounds familiar too, but I thought it was more for tracking items rather than making payments.
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Mozell
2 months ago
I feel like Bluetooth could also be a contender, but I don't recall it being specifically for payments.
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Dan
2 months ago
I think it's NFC because I remember it being used for mobile payments, but I'm not entirely sure.
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