Oracle 1z0-1124-25 Practice Test Questions Answers

Goal: Private, secure, least-privilege access to Object Storage across subnets.

Option A: Internet Gateway uses public access, violating privacy—incorrect.

Option B: NAT Gateway is for internet, not OCI services—incorrect.

Option C: Service Gateway provides private access; IAM policies enforce least privilege; route tables manage traffic—correct.

Option D: Private Endpoints per bucket/subnet are inefficient and unscalable—incorrect.

Conclusion: Option C is efficient and secure.

Oracle states:

"A Service Gateway enables private access to Object Storage. Use IAM policies for least-privilege access and route tables for traffic control."This supports Option C. Reference:Service Gateway Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/servicegateway.htm).

Zero Trust Context:Assumes no inherent trust, requiring explicit controls at all network stages.

Evaluate Principles:

Implicit Trust:Assumes trust, opposite of Zero Trust; incorrect.

Least Privilege:Grants minimal access, explicitly enforced; aligns with Zero Trust.

Perimeter Security:Relies on boundary protection, not Zero Trust; incorrect.

Network Segmentation:Isolates networks, a tactic not a principle; incomplete.

Conclusion:Least Privilege is the core principle for explicit access control.

Zero Trust Packet Routing in OCI emphasizes Least Privilege. The Oracle Networking Professional study guide states, "The Least Privilege principle in Zero Trust requires that access controls be explicitly defined and enforced at every network communication stage, ensuring no implicit trust" (OCI Networking Documentation, Section: Zero Trust Networking). This drives granular security policies.

Problem:Instances lack IPv6 addresses despite VCN IPv6 configuration.

OCI IPv6 Behavior:IPv6 requires subnet enablement and OS support via SLAAC.

Evaluate Options:

A:Incorrect. OCI doesn’t auto-assign IPv6 without OS configuration.

B:Correct. SLAAC must be enabled on the instance OS for auto-assignment.

C:Incorrect. IPv6 works in both public and private subnets.

D:Incorrect. IPv4 and IPv6 assignments are independent.

Conclusion:Enabling SLAAC on the OS ensures automatic IPv6 assignment.

IPv6 in OCI relies on SLAAC for automatic address assignment. The Oracle Networking Professional study guide states, "To enable IPv6 on instances, the VCN and subnet must have IPv6 CIDR blocks, and the instance OS must support SLAAC to automatically configure IPv6 addresses" (OCI Networking Documentation, Section: IPv6 Configuration). Without SLAAC, instances default to IPv4 only.

Context: Tunnel flapping over FastConnect vs. public internet.

Option A: Congestion/packet loss is less likely over FastConnect’s dedicated link than the unpredictable public internet—correct.

Option B: Mismatched keys/parameters would prevent tunnel establishment, not flapping—equally likely in both.

Option C: MTU issues cause fragmentation in both scenarios—equally likely.

Option D: BGP flapping is more relevant with FastConnect’s dynamic routing—more likely here.

Conclusion: Option A is less likely over FastConnect.

Oracle notes:

"FastConnect provides a stable, dedicated connection, reducing congestion and packet loss compared to public internet VPNs."This supports Option A. Reference:IPSec over FastConnect - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/settingupIPSec.htm#fastconnect).

Identify the Goal: Troubleshoot efficiently to determine if stateful inspection is causing intermittent connectivity issues.

Option A Evaluation: Disabling stateful inspection globally removes all security checks, potentially restoring connectivity but disrupting the entire VCN’s security. This is inefficient and risky.

Option B Evaluation: Creating a bypass rule for the application server avoids inspection, which could confirm the issue but weakens security for that server. It’s a workaround, not a diagnostic step, and requires policy changes during troubleshooting.

Option C Evaluation: Reviewing firewall logs for denied traffic is targeted and non-disruptive. Logs show if stateful inspection is dropping packets (e.g., due to session timeouts or rule mismatches), directly identifying the cause without altering configurations.

Option D Evaluation: Recreating the firewall is highly disruptive, time-consuming, and doesn’t guarantee insight into the current issue. It’s not a troubleshooting step.

Conclusion: Option C is the most efficient, as it leverages logs for precise diagnosis without impacting operations.

Per Oracle’s Network Firewall documentation:

"Network Firewall logs provide detailed information about allowed and denied traffic, including source/destination IPs, ports, and protocols. Use logs to troubleshoot connectivity issues by identifying dropped packets due to stateful inspection or rule mismatches."

"Stateful inspection tracks connection states; misconfigurations can lead to dropped sessions."This confirms logs are the best tool for diagnosing stateful inspection issues. Reference:Network Firewall Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/NetworkFirewall/overview.htm).