Which statement is true for an OCI compute instance?

A compute instance in Oracle Cloud Infrastructure (OCI) always is assigned a private IP address when it is created. The private IP address is fundamental for communication within the Virtual Cloud Network (VCN) to which the instance belongs, enabling it to interact with other resources securely without requiring a public IP address for internal network communications.

This private IP address is essential for services that may not need internet access and for establishing secure communication between various resources in a cloud environment. While a public IP address can be assigned to an instance, it is not a requirement, so it's not accurate to say that every compute instance always gets a public IP address.

The designated nature of instances also indicates that they can indeed leverage features such as auto-scaling depending on the configuration, and they typically utilize boot volumes for their operating systems. Thus, the statement about always having a private IP address is correct and reflects the standard behavior of OCI compute instances.