Which one is TRUE for RFID?

A Uses electromagnetic signal
B Uses laser beam
C Uses optical signal
D Uses infrared

Correct Answer: Uses electromagnetic signal

Radio Frequency Identification (RFID), Data transfer করার জন্য তড়িৎ চুম্বকীয় Signal ব্যবহার করে।
Bissoy MCQ
#তথ্য প্রযুক্তি #Combined Bank (সমন্বিত ব্যাংক) #ডেটা ট্রান্সমিশন মেথড #সোনালী ও জনতা ব্যাংক - অফিসার(আইটি) - 02.10.2021

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