B: Network Security Groups (NSGs) for traffic control:
* NSGs allow customers to defineingress and egress rulesto control network traffic.
* Enhances security by restricting access to only authorized IP ranges and protocols.
* Applied at theVM Clusterlevel to manage connectivity efficiently.
E: Responsibility for OS and database security:
* While Oracle manages the infrastructure layer, customers are responsible for securing theoperating system and databasewithin the VM Clusters.
* This includes applying security patches, configuring firewalls, and implementing user access controls.
Why the other options are incorrect:
* A. Host-based firewalls on Exadata Infrastructure:Oracle, not the customer, configures the infrastructure-level security.
* C. Oracle managing all security:Incorrect, as customers manage VM-level security.
* D. Access to hypervisor:Customers do not have hypervisor-level access for security configuration.