1z0-1124-25 Exam Dumps - Oracle Cloud Infrastructure Questions and Answers

Goal: Filter Flow Logs for traffic rejected by a specific security list rule.

Option A: “action” = “REJECT” identifies rejected traffic; “securityListRule” with rule ID pinpoints the exact rule—correct.

Option B: “status” and “securityRule” aren’t standard Flow Log fields (“action” and “securityListRule” are)—incorrect.

Option C: “direction” and “port” filter traffic but don’t specify rejection or rule—incorrect.

Option D: “type” and “rule” aren’t valid Flow Log fields—incorrect.

Conclusion: Option A is the precise filtering method.

Oracle states:

"In Flow Logs, use the ‘action’ field (‘REJECT’) and ‘securityListRule’ field (rule ID) to filter traffic rejected by a specific security list rule.”This validates Option A. Reference:Flow Logs Fields - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts/flowlogs.htm#fields).

Requirement:Transitive routing across regions and to on-premises, privately.

Components:

LPG:Intra-region VCN peering; limited scope.

DRG:Cross-region and on-premises routing via private backbone.

Service Gateway:OCI service access; not transitive.

Internet Gateway:Public internet; not private.

Evaluate Options:

A:Region-specific; incorrect.

B:Supports multi-region and on-premises; correct.

C:Service-focused; incorrect.

D:Public; incorrect.

Conclusion:DRG is the key component.

DRG enables complex routing scenarios. The Oracle Networking Professional study guide notes, "The Dynamic Routing Gateway (DRG) facilitates transitive routing between VCNs in different regions and on-premises networks over OCI’s private backbone" (OCI Networking Documentation, Section: Dynamic Routing Gateway). This meets both requirements efficiently.

Goal: Verify routing for inter-region VCN peering via DRG.

Option A: Cloud Guard monitors security, not routing—incorrect.

Option B: Audit Logs track changes, not current routing state—incorrect.

Option C: DRG Route Tables define routing rules, directly showing misconfigurations—correct.

Option D: Network Visualizer shows topology but not detailed routing rules—less effective.

Conclusion: DRG Route Tables are most effective.

Oracle states:

"DRG Route Tables are the primary tool for verifying and troubleshooting routing configurations for inter-region VCN peering."This validates Option C. Reference:DRG Troubleshooting - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/managingDRGs.htm#troubleshooting).

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 thepeer 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).

Requirements: Private, low-latency cross-region VCN connectivity.

Option A: RPCs with route table updates enable private, direct peering via DRG—correct.

Option B: IPSec VPN adds latency over internet—incorrect.

Option C: Service Gateways are for OCI services—incorrect.

Option D: NAT Gateways use public IPs, not private—incorrect.

Conclusion: Option A is necessary.

Oracle states:

"Use Remote Peering Connections (RPCs) with DRG to connect VCNs across regions privately. Update route tables for CIDR routing."This supports Option A. Reference:Remote VCN Peering - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/remoteVCNpeering.htm).

Goal: Support Zero Trust with packet flow monitoring.

Option A: Static routing defines paths, not monitoring—incorrect.

Option B: Security lists control access, not monitor—incorrect.

Option C: Flow logs track traffic; audit trails log actions—essential for Zero Trust—correct.

Option D: Public IPs enable access, not monitoring—incorrect.

Conclusion: Option C is essential.

Oracle states:

"Flow logs and audit trails provide continuous monitoring and verification of packet flows, critical for Zero Trust Packet Routing."This supports Option C. Reference:Zero Trust in OCI - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts/zerotrust.htm).

Objective:Grant requesting tenancy permission to initiate an RPC to the target tenancy.

RPC Process:Requires the requesting tenancy to create and connect the RPC, which needs specific IAM permissions in the target tenancy.

IAM Verbs:

manage:Broad permissions, too permissive for RPC initiation.

use:Allows creation and connection of RPCs, precise for this task.

inspect:Read-only, insufficient for initiating connections.

read:Read-only, insufficient for initiating connections.

Evaluate Options:

A:Too broad, includes unnecessary permissions; incorrect.

B:Precise permission for RPC initiation; correct.

C:Read-only, doesn’t allow connection; incorrect.

D:Read-only, doesn’t allow connection; incorrect.

Conclusion:"use remote-peering-connections" is the essential policy.

RPCs require specific IAM policies for cross-tenancy connectivity. The Oracle Networking Professional study guide states, "To initiate a Remote Peering Connection, the requesting tenancy needs an IAM policy with the 'use remote-peering-connections' verb targeting the acceptor tenancy’s OCID" (OCI Networking Documentation, Section: Remote Peering Connections). This ensures controlled access for connection establishment.

Problem:OKE web tier pods cannot reach the application tier.

Traffic Flow:Web tier (OKE) initiates outbound (egress) traffic to application tier (port 8080).

NSG Role:Controls traffic at VNIC level; must allow egress from OKE and ingress to app tier.

Evaluate Options:

A:Missing egress rule on OKE NSG blocks traffic; plausible but incomplete context.

B:Ingress on OKE NSG affects incoming traffic, not outbound to app tier; incorrect.

C:No ingress on OKE NSG doesn’t block egress to app tier; incorrect.

D:Egress limited to internet blocks app tier access (port 8080); most likely.

Conclusion:Missing egress rule to app tier NSG is the primary issue.

NSGs require explicit egress rules for outbound traffic. The Oracle Networking Professional study guide notes, "For OKE pods to communicate with other tiers, the node pool’s NSG must include egress rules to the destination NSG or CIDR on the required ports" (OCI Networking Documentation, Section: Network Security Groups with OKE). Option D reflects a common misconfiguration in IaC setups.

Goal:Stable endpoint for MySQL DB with HA failover support.

Endpoint Options:

Public IP:Exposed, changes on failover; unsuitable.

DNS with Floating IP:Persistent across failovers; ideal.

Private IP:Tied to primary, fails on switch; incorrect.

Service Gateway:For OCI services, not MySQL DB; incorrect.

Evaluate Options:

A:Public exposure, no HA; incorrect.

B:Floating private IP with DNS ensures continuity; correct.

C:Static IP breaks on failover; incorrect.

D:Misaligned purpose; incorrect.

Conclusion:DNS with floating IP is most suitable.

MySQL DB in OCI uses floating IPs for HA. The Oracle Networking Professional study guide explains, "A DNS hostname resolving to the floating private IP of the active MySQL Database Service instance ensures seamless connectivity during failover events" (OCI Networking Documentation, Section: MySQL Database Service HA). This provides predictability and stability.

Objective: Load balance OCI-to-on-premises traffic over two FastConnect circuits.

Option A: Different MEDs prioritize one path, not balance—incorrect.

Option B: Same prefixes and attributes enable Equal-Cost Multi-Path (ECMP) routing, balancing traffic—correct.

Option C: AS Path Prepending prefers one path—incorrect.

Option D: Local preference prioritizes one path—incorrect.

Conclusion: Option B ensures load balancing.

Oracle states:

"For load balancing over multiple FastConnect circuits, advertise identical prefixes with the same BGP attributes to enable ECMP."This supports Option B. Reference:FastConnect BGP - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/fastconnect.htm#BGP).