Cisco Exam Questions

Which three statements best describe how DNSSEC prevents DNS cache poisoning attacks from succeeding

Which three statements best describe how DNSSEC prevents DNS cache poisoning attacks from succeeding? (Choose three.)

A.
DNSSEC utilizes DS records to establish a trusted hierarchy of zones.

B.
DNSSEC signs all records with domain-specific keys.

C.
DNSSEC introduces KEY records that hold domain-specific public keys

D.
DNSSEC deprecates CNAME records and replaces them with DS records.