A. The Data Collector only needs a client certificate signed by a public CA to authenticate to the XSIAM Data Lake. Internal log sources will use unencrypted connections.

B. The Data Collector requires an X.509 certificate issued by the internal enterprise CA, both for authenticating itself to the XSIAM Data Lake (if mutual TLS is configured) and for presenting to internal log sources that communicate via TLS (e.g., secure Syslog). The Data Collector must also trust the XSIAM Data Lake's public CA certificate.

C. Certificate management is irrelevant for Data Collectors as all communication is inherently secure through Palo Alto Networks' proprietary encryption algorithms.

D. Only the XSIAM Data Lake requires a valid certificate; Data Collectors do not need any certificates for secure communication.

E. The Data Collector should generate a new self-signed certificate every 24 hours to ensure maximum security through frequent key rotation.