Free Practice Questions for Oracle 1z0-1124-25 Exam

Objective: Identify a VPN disadvantage for large dataset migration.

Option A: VPNs can be secure with IPSec; not inherently less secure—incorrect.

Option B: VPNs are automatable with IaC (e.g., Terraform)—incorrect.

Option C: Public internet limits VPN throughput due to bandwidth and latency variability—correct disadvantage.

Option D: VPNs are compatible with OCI services—incorrect.

Conclusion: Option C is the key disadvantage.

Oracle notes:

"Public internet-based VPNs face throughput limitations due to bandwidth and latency variability, impacting large data migrations.”This supports Option C. Reference:VPN Limitations - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/settingupIPSec.htm#limitations).

Goal:Minimize downtime in blue/green deployment with ALB.

ALB Capabilities:Supports weighted routing for gradual traffic shifts.

Evaluate Options:

A:Immediate switch risks downtime if ‘green’ fails; less efficient.

B:Listener swap causes abrupt change; not optimal.

C:Gradual shift with weights ensures smooth transition; most efficient.

D:Forcing ‘blue’ unhealthy is disruptive and hacky; inefficient.

Conclusion:Weighted routing provides the smoothest transition.

ALB supports blue/green via routing rules. The Oracle Networking Professional study guide states, "Application Load Balancer’s routing rules allow weighted traffic distribution between backend sets, enabling blue/green deployments with minimal downtime" (OCI Networking Documentation,Section: Load Balancer Routing). This method ensures stability during updates.

Problem: OKE pods can’t resolve private DB IP despite VCN DNS working.

Option A: CoreDNS in OKE must forward to VCN’s resolver for private IPs; misconfiguration is a common issue—correct.

Option B: Security lists block traffic, not resolution; VCN DNS isn’t hosted on the DB—incorrect.

Option C: Public endpoint affects API access, not internal DNS—incorrect.

Option D: Route tables don’t control DNS resolution—incorrect.

Conclusion: Option A is the most probable cause.

Oracle notes:

"CoreDNS in OKE must be configured to forward queries to the VCN’s DNS resolver (.169 address) for private IP resolution."This supports Option A. Reference:OKE DNS Configuration - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/ContEng/Tasks/contengdns.htm).

Goal: Efficient, cost-optimized data transfer minimizing egress charges.

Option A: Public internet incurs high egress costs—incorrect.

Option B: Hub-and-spoke doubles egress/ingress charges—less efficient.

Option C: Third-party platform at peering points reduces egress by leveraging direct connections—correct.

Option D: Storage Gateway is for hybrid, not multicloud efficiency—incorrect.

Conclusion: Option C is the most efficient strategy.

Oracle states:

"A third-party integration platform at peering points minimizes egress charges by using direct interconnects for multicloud data transfers.”This validates Option C. Reference:Multicloud Cost Optimization - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts/multicloud.htm#costoptimization).

Requirement Analysis: Strict compliance mandates logging all user access to private resources in a multi-tier setup.

Option A Assessment: Dynamic port forwarding with no logging fails compliance, as it provides no audit trail.

Option B Assessment: Managed Bastion sessions in OCI offer detailed logging (e.g., session start/end times, user IDs), integrated with OCI Logging. This meets compliance needs with a managed, scalable solution.

Option C Assessment: SSH port forwarding with minimal logs doesn’t provide the detailed auditing required for strict compliance.

Option D Assessment: A jump server with manual logging is error-prone, lacks scalability, and isn’t a managed OCI service, making it less suitable.

Conclusion: Option B provides the most robust, compliance-ready solution with detailed logging.

From Oracle’s Bastion documentation:

"OCI Bastion provides managed SSH sessions with detailed logging capabilities, capturing user access details for audit and compliance. Enable session logging to record all activities."This supports Option B as the best choice. Reference:Bastion Service Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Bastion/Concepts/bastionoverview.htm).

Objective: Identify the essential Service Connector Hub task for routing Flow Logs to Object Storage.

Option A (Ingest Logs): Ingesting is for bringing external logs into OCI, but Flow Logs are already OCI-native—incorrect.

Option B (Process Logs): “Process Logs” isn’t a specific task type in Service Connector Hub—incorrect.

Option C (Deliver Logs): Deliver Logs moves logs to a target (e.g., Object Storage), ensuring storage—correct and essential.

Option D (Transform Logs): Transforming modifies logs optionally, but delivery is required for storage—incorrect as the primary task.

Conclusion: Deliver Logs is the essential task type for this scenario.

Oracle documentation states:

"The Deliver Logs task in Service Connector Hub moves logs, such as VCN Flow Logs, to a specified destination like Object Storage for storage and analysis."This supports Option C. Reference:Service Connector Hub Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/ServiceConnectorHub/Concepts/serviceconnectorhub.htm).

Problem Scope:Load balancer (public subnet) cannot reach application servers (private subnet).

Connectivity Flow:Load balancer initiates traffic to application servers; application servers respond. Key checkpoints: routing and security rules.

Analyze Routing:Private subnets typically don’t route to an Internet Gateway by default; they use NAT or Service Gateways. Misrouting (Option B) would affect outbound traffic, not inbound from the load balancer.

Security Rules:

Ingress (App Servers):Must allow traffic from the load balancer’s IP range.

Egress (Load Balancer):Must allow traffic to the application servers.

Evaluate Options:

A:Missing ingress rule on application servers’ security list blocks load balancer traffic; most likely.

B:Incorrect default route affects outbound, not inbound; less likely.

C:NAT misconfiguration impacts outbound, not inbound; incorrect.

D:Load balancer egress is necessary but secondary to application server ingress.

Conclusion:Ingress rule absence on the application server subnet is the primary blocker.

Security lists control traffic at the subnet level in OCI. The Oracle Networking Professional study guide explains, "For a load balancer in a public subnet to communicate with instances in a private subnet, the private subnet’s security list must include an ingress rule allowing traffic from the load balancer’s IP range" (OCI Networking Documentation, Section: Security Lists). Since Terraform deployed the infrastructure, a misconfigured security list is a common oversight.

Requirements: Low latency, high security with encryption for migration.

Option A: VPN with IPSec offers encryption but has higher latency over public internet—less optimal.

Option B: ExpressRoute and FastConnect provide a private, low-latency link; TLS adds end-to-end encryption—correct and best combination.

Option C: Data Factory with HTTPS is encrypted but slow and not real-time—incorrect.

Option D: VPN with Load Balancer SSL termination breaks end-to-end encryption—incorrect.

Conclusion: Option B balances performance and security.

Oracle notes:

"For latency-sensitive migrations, use FastConnect with ExpressRoute via colocation, enhanced by TLS for secure, high-performance data transfer.”This supports Option B. Reference:Multicloud Connectivity - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts/multicloud.htm).

Objective: Identify the true statement about KSK rotation in OCI DNS.

Option A: OCI DNS automates much of the process but requires user initiation, not fully automated—incorrect.

Option B: OCI DNS generates keys internally; manual generation and upload aren’t required—incorrect.

Option C: OCI DNS offers a “KSK Rollover” feature that, once enabled, automates the rotation process, ensuring minimal disruption—correct.

Option D: KSK rotation is supported via the rollover feature—incorrect.

Conclusion: Option C accurately describes OCI DNS KSK rotation.

Oracle documentation confirms:

"OCI DNS supports KSK rotation through the KSK Rollover feature. Enable it to automatically rotate keys while maintaining DNS resolution continuity."This validates Option C. Reference:DNSSEC in OCI DNS - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/DNS/Tasks/managingdnssec.htm).