Oracle Updated 1z0-1124-25 Exam Questions and Answers by keira

Requirements:Private, encrypted connectivity to on-premises, no public internet.

Gateway Options:

Service Gateway:For OCI services, not on-premises.

Internet Gateway:Public internet access, unsuitable.

DRG with FastConnect:Private on-premises connectivity.

NAT Gateway:Outbound internet, not private to on-premises.

Evaluate Options:

A:Limited to OCI services; incorrect.

B:Uses public internet; violates policy.

C:FastConnect via DRG ensures private, encrypted link; correct.

D:Public IPs contradict requirement; incorrect.

Conclusion:DRG with FastConnect is the most appropriate.

FastConnect provides private connectivity via DRG. The Oracle Networking Professional study guide states, "A Dynamic Routing Gateway with FastConnect establishes a dedicated, private connection to on-premises networks, ensuring data encryption and isolation from the public internet" (OCI Networking Documentation, Section: FastConnect). This meets security and privacy needs.

Goal: Secure, granular access control to ADB from private subnet instances.

Option A: Public endpoint with NSGs exposes ADB to the internet, increasing risk despite NSG restrictions—less secure than private options.

Option B: Service Gateway provides private access to OCI services, but it’s not specific to ADB instances and lacks the instance-level granularity of private endpoints.

Option C: Private ADB endpoint assigns a private IP within the VCN, keeping traffic internal. NSGs allow precise, stateful control to specific instances, offering the most granular security.

Option D: DRG is for external connections (e.g., on-premises), not internal VCN-to-ADB access.

Conclusion: Option C provides the most secure and granular control.

Oracle documentation notes:

"Private endpoints for Autonomous Database provide a private IP within your VCN, ensuring traffic stays off the public internet. Use NSGs for fine-grained access control to specific instances."This supports Option C. Reference:Autonomous Database Networking - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Database/Tasks/adbconnecting.htm).

Goal: Automate DNSSEC health monitoring with alerts.

Option A: Vulnerability Scanning is for compute instances, not DNSSEC—incorrect.

Option B: Monitoring Service tracks metrics and logs, supports custom DNSSEC metrics, and provides alarms—correct.

Option C: Audit Service logs API calls, not DNSSEC health—incorrect.

Option D: Logging Analytics analyzes logs but lacks direct alerting—less effective than Monitoring.

Conclusion: Option B is the most effective for automated monitoring and alerts.

Oracle documentation notes:

"OCI Monitoring Service allows you to monitor metrics and logs, including DNSSEC-related data, and set alarms for proactive notifications."This supports Option B. Reference:Monitoring Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Monitoring/Concepts/monitoringoverview.htm).

Symptoms:VPN tunnel drops intermittently despite stable internet and IKE settings.

VPN Components:Requires IKE (UDP 500/4500) and ESP (IP 50) traffic.

Evaluate Options:

A:Incorrect CPE IP would prevent tunnel establishment, not intermittent drops; incorrect.

B:DRG outage would cause full downtime, not intermittent; unlikely.

C:Security rules blocking IKE/ESP intermittently (e.g., rate limiting) is common; most likely.

D:NAT-Traversal issues typically prevent initial setup, not intermittent drops; less likely.

Conclusion:Security rule misconfiguration is the most probable cause.

VPN stability depends on unblocked IKE and ESP traffic. The Oracle Networking Professional study guide notes, "Intermittent VPN tunnel drops are often caused by security rules or firewalls blocking IKE (UDP 500/4500) or ESP (IP Protocol 50) traffic" (OCI Networking Documentation, Section: Site-to-Site VPN Troubleshooting). This aligns with the scenario’s symptoms.