Question: While asymmetric encryption solved the key exchange problem faced by symmetric encryption, it is vulnerable to Man - In - The - Middle Attacks, where

While asymmetric encryption solved the key exchange problem faced by symmetric encryption, it is vulnerable to Man-In-The-Middle Attacks, where the attacker replaces the valid asymmetric public key(s) with their own public key. What is the name of the system that has been implemented to authenticate public keys?
Group of answer choices
PKE
PKI
TKI
DNS
RSA
HMAC

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