1Z0-1072-25 Sample Questions & Answers

A Remote Peering Connection (RPC) is the specific OCI component used to connect two VCNs in different regions. It allows resources in the VCNs to communicate using private IP addresses over Oracle's private network backbone, providing a secure and reliable connection suitable for disaster recovery scenarios.

This is the most secure and recommended method. By creating a dynamic group with a matching rule for the instance pool's OCID, all instances in that pool become members. You can then write an IAM policy that grants this dynamic group permission to manage objects in the target bucket. Applications on the instances can then use instance principals to be authenticated and authorized to call OCI services without needing to handle credentials.

For an instance to be managed by the OS Management service, the Oracle Cloud Agent must be installed and running, and specifically, the OS Management Service Agent plugin must be enabled. While Oracle Linux images typically include the agent, it must be active and able to communicate with the OCI services. Connectivity via a Service Gateway (for private subnets) or Internet Gateway is also required, but the agent itself is the primary prerequisite for visibility in the console.

This statement is false. Unlike Security Lists which apply to all VNICs in a subnet, Network Security Groups (NSGs) must be explicitly associated with a VNIC. An NSG acts as a virtual firewall for a chosen set of VNICs, allowing you to define security rules based on application tier or workload rather than subnet boundaries.

A Volume Group is designed for this exact purpose. It allows you to group multiple Block Volumes together and perform coordinated, time-consistent operations on them. Creating a backup of the Volume Group ensures that a crash-consistent backup of all member volumes is taken at the same point in time, which is critical for database recovery.

OCI Traffic Management's Geolocation steering policy is designed for this exact scenario. It allows you to define routing rules based on the geographic origin of the DNS query. You can configure it to serve answers pointing to the closest region for a given user. Combined with health checks, it will automatically stop sending traffic to an unhealthy region and fail over to the next priority pool, fulfilling both requirements.

Compartment quotas are specifically designed to control resource consumption. The administrator can set a quota on the development compartment for specific resource types, such as setting the count of a particular Bare Metal GPU shape to zero. This will prevent any user from creating that resource within the compartment, effectively enforcing the spending control.

For latency-sensitive HPC workloads, OCI provides cluster networks. This feature groups HPC or GPU instances onto a dedicated, rear-end, ultra-low-latency network that supports Remote Direct Memory Access (RDMA). This provides microsecond-level latency between nodes, which is ideal for tightly coupled HPC applications.

If the route table associated with the public subnet doesn't have a rule to direct traffic to the private subnet's CIDR block, the packets will be dropped. Network Path Analyzer checks route tables along the path.

Network Path Analyzer inspects both Security Lists and Network Security Groups. If the database subnet's security list blocks incoming traffic from the web server's source CIDR on the database port, the path analysis will report a failure.

Similar to security lists, if an NSG is applied to the database server's VNIC and it doesn't have a rule to permit the traffic, the connection will be blocked, and Network Path Analyzer will identify this as the point of failure.

The autoscaling configuration defines the minimum, maximum, and initial number of instances for an instance pool. The autoscaling policy can only add instances up to the specified maximum. If the pool is already at its maximum size, no further scale-out events will occur, regardless of the metric thresholds being met. The maximum number of instances should be set high enough to accommodate peak load.