Intermediate
Computer Networks
Q68 / 100
What is DNSSEC?
Correct! Well done.
Incorrect.
The correct answer is B) DNS Security Extensions — cryptographic signatures on DNS records to detect forged responses and prevent DNS cache poisoning
B
Correct Answer
DNS Security Extensions — cryptographic signatures on DNS records to detect forged responses and prevent DNS cache poisoning
Explanation
DNSSEC signs DNS records with private keys. Resolvers verify signatures using the public key chain from the root. It prevents Kaminsky-style DNS cache poisoning attacks by ensuring response authenticity.
Progress
68/100