Radio Frequency IDentification (RFID) tags and readers are a category of low-end
ID: 663132 • Letter: R
Question
Radio Frequency IDentification (RFID) tags and readers are a category of low-end wireless devices that people may not recognize as forming a computer network. Which of the statements below are true about RFID?
i RFID technology takes many forms, used in smartcards, implants for pets, passports, library books and more
ii with the EPC (Electronic Product Code) RFID tags are small, inexpensive devices that have a unique identifier and a small amount of memory that can be read and written by an RFID reader
iii the tags are the intelligence in the system, analogous to base stations and access points in WiFi networks
iv in the EPC Gen 2 Physical Layer the data is transmitted in the same way as in all other wireless situations we have seen so far
Explanation / Answer
Answer:
Radio Frequency Identification (RFID) tags and readers uses the electromagnetic waves to identify and track the attached objects.
A tag is attached to the object which is to be identified or tracked, and reader is used to read the response and send the acknowledgement. Therefore, RFID tags and readers are used in many industries, passports, transportations and pet identification etc.
i.
RFID technology is used in smartcards, implants for pets, passports and library books to identify and track the persons, objects and pets etc.
Therefore, option (i) is true.
ii.
Electronic Product Code (EPC) is a small code stored in the RFID tag. The code stored in the memory is 96 bits which are used to identify the organization which manages the data, unique number to identify the product and a number to identify the particular tag and etc.
EPC is a unique identification number that can read and written by the RFID reader. It is used in supply chains instead of a bar code even though expansive.
Therefore, option (ii) is true.
iii.
Tags are used to identify and track the objects. It doesn’t belong to base stations and access points as a Wi-Fi networks.
Therefore, option (iii) is false.
iv.
The EPC Generation 2 RFID tag is used to improve the security by enabling the authentication features. It is not the similar way of data transmission in the other wireless situations.
Therefore, option (iv) is false.
Finally, the options (i) and (ii) are TRUE.
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