Oracle Cloud Infrastructure (OCI) File Storage Service offers robust encryption capabilities to ensure data security.

B. Customer-Managed Encryption: Customers can choose to encrypt their data using their own keys stored in the OCI Vault service. This gives customers control over their encryption keys and enhances data security.

D. Oracle-Managed Encryption: By default, all data stored in OCI File Storage is encrypted using Oracle-managed keys. This ensures that data is encrypted at rest without requiring any action from the customer.

Incorrect Statements:

A. Communication is not encrypted via HTTPS when accessing file systems; instead, encryption in transit is typically managed via NFS over TLS.

C. Encryption of communication to a mount target is handled via network configurations, not through export options.