Oracle 1Z0-1124-25 Exam Dumps

Requirement: Restrict inter-subnet communication unless permitted.

Options Analysis:

A: Removing default route breaks all routing, overly restrictive; incorrect.

B: Separate VCNs are excessive, complex; less practical.

C: NSGs provide granular, explicit control; optimal approach.

D: External firewall adds complexity, not VCN-native; inefficient.

NSG Advantage: Instance-level rules enforce policy within VCN.

Conclusion: NSGs are the most appropriate solution.

NSGs enable precise security within a VCN. The Oracle Networking Professional study guide states, 'Network Security Groups (NSGs) allow you to define strict ingress and egress rules for instances, ensuring inter-subnet communication is explicitly permitted as per security policies' (OCI Networking Documentation, Section: Network Security Groups). This is more efficient than VCN separation or external firewalls.

Objective: Identify the feature for dynamic route learning via DRG.

Option A: Service Gateway is for OCI services---incorrect.

Option B: LPG is for VCN peering---incorrect.

Option C: BGP enables dynamic route exchange between DRG and on-premises---correct.

Option D: Internet Gateway is for public access---incorrect.

Conclusion: Option C is the correct feature.

Oracle notes:

'BGP on the DRG dynamically learns routes from on-premises networks over FastConnect or VPN, propagating them to VCNs.'

This confirms Option C. Reference: BGP with DRG - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Network/Tasks/managingDRGs.htm#BGP).

Problem Scope: Identify and adjust WAF rules causing false positives in Detection mode without disrupting traffic.

Detection Mode Behavior: Logs potential violations without blocking, allowing analysis.

Evaluate Options:

A: Use OCI Logging Analytics to pinpoint rule IDs from logs, then set rules to 'log only' for testing; efficient and non-disruptive.

B: Disabling all rules risks security and is time-consuming; inefficient.

C: Increasing sensitivity worsens false positives; counterproductive.

D: Whitelisting IPs is a temporary fix, not scalable or diagnostic; unsuitable.

Conclusion: Logging analysis with rule adjustment is the most efficient approach.

OCI WAF logs provide detailed insights for troubleshooting. The Oracle Networking Professional study guide states, 'In Detection mode, WAF logs all triggered rules, which can be analyzed in OCI Logging Analytics to identify false positives. Rules can then be adjusted to 'log only' to refine policies without affecting traffic' (OCI Networking Documentation, Section: Web Application Firewall). This method ensures precision and minimal disruption.

Context: Inter-tenancy VCN peering connects VCNs across different OCI tenancies using Remote Peering Connections (RPCs).

Option A: Authentication of the root user is handled by IAM policies, not the peer ID, which is a technical identifier---incorrect.

Option B: The peer ID is the OCID of the RPC created by the requesting tenancy. It uniquely identifies the RPC, allowing the accepting tenancy to target and establish the peering---correct.

Option C: CIDR blocks are part of VCN configuration and shared separately, not via the peer ID---incorrect.

Option D: Security rules are defined by NSGs or security lists, not the peer ID---incorrect.

Conclusion: The peer ID's purpose is to identify the requesting tenancy's RPC, making Option B the correct answer.

From Oracle's documentation:

'For inter-tenancy peering, the requesting tenancy provides the OCID of its Remote Peering Connection (RPC), known as the peer ID, to the accepting tenancy. The accepting tenancy uses this ID to establish the peering.'

This confirms Option B. Reference: Remote VCN Peering Across Tenancies - Oracle Help Center (docs.oracle.com/en-us/iaas/Content/Network/Tasks/remoteVCNpeering.htm#cross-tenancy).

Goal: Automate certificate renewal in OCI Certificates.

Feature Check: OCI Certificates supports automatic renewal.

Evaluate Options:

A: Manual renewal risks disruption; inefficient.

B: Automatic Renewal with DNS validation automates process; best fit.

C: Vault stores secrets, no renewal automation; incorrect.

D: False; OCI Certificates has auto-renewal; incorrect.

Conclusion: Automatic Renewal is the optimal feature.

OCI Certificates offers automated renewal. The Oracle Networking Professional study guide states, 'Enable the 'Automatic Renewal' option in OCI Certificates and configure DNS validation to ensure certificates are renewed before expiration, preventing disruptions' (OCI Networking Documentation, Section: OCI Certificates). This leverages OCI's built-in automation.