Which two features of RFID technologies are correct?

RF ID is a technology widely used in loT networks today.

Which two features of RFID technologies are correct? (Choose two)
A . RFID readers do not require anti-collision protocols to minimize collisions
B . Semi-passive tags have an on-board power source which is used to energize microchips
C . RFID readers can suffer from a lack of sufficient memory and computational resources
D . RFID tag collision results in an increase of identification delays
E . RFID uses CDMA and CSMA for the prevention of collisions on RFID systems

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Answer: B, D