1Z0-1124-25 Practice Questions

Requirements: End-to-end encryption, no public internet for Object Storage access.

Options Analysis:

Service Gateway: Private access to Object Storage.

NAT Gateway: Public internet access; unsuitable.

Private Endpoint: Alternative private access, but newer feature.

HTTPS: Ensures in-transit encryption.

Evaluate Options:

A: Encryption at rest doesn’t cover transit; incomplete.

B: NAT uses public internet; violates policy; incorrect.

C: Service Gateway with HTTPS ensures full encryption and privacy; correct.

D: Private Endpoint with HTTPS is valid but less common than Service Gateway; slightly less optimal

historically.

Conclusion: Service Gateway with HTTPS is most secure and compliant.

Service Gateway is standard for private Object Storage access. The Oracle Networking Professional

study guide states, "A Service Gateway with HTTPS API calls ensures end-to-end encrypted traffic to

Object Storage without public internet traversal" (OCI Networking Documentation, Section: Service

Gateway). This meets security mandates effectively.

Reference: Oracle Cloud Infrastructure Documentation - Service Gateway.

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).

Goal: Balance global load balancing with regional WAF protection near users.

Option A: Single WAF in one region creates a bottleneck and increases latency—insufficient.

Option B: GLB distributes globally to regional Load Balancers, each with a WAF, ensuring protection

close to users—correct.

Option C: WAF before GLB centralizes protection, adding latency and a single failure point—

incorrect.

Option D: Source IP routing with regional WAFs is less optimal than GLB’s health-based routing—less

effective.

Conclusion: Option B optimizes both goals.

Oracle states:

"OCI GLB distributes traffic across regions. Pair with regional Load Balancers and WAFs for localized

protection and optimal performance."

This supports Option B. Reference: Global Load Balancer Overview - Oracle Help Center

(docs.oracle.com/en-us/iaas/Content/Balance/Concepts/globalbalance.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.

Reference: Oracle Cloud Infrastructure Documentation - Site-to-Site VPN.

Objective: Identify the OCI component for dynamic routing in a hybrid setup.

Option A: Internet Gateway enables public internet access, not private hybrid routing—incorrect.

Option B: DRG is a virtual router that dynamically routes traffic between on-premises networks and

VCNs via FastConnect or VPN, using protocols like BGP—correct.

Option C: Service Gateway provides private access to OCI services, not on-premises connectivity—

incorrect.

Option D: LPG peers VCNs within the same region, not with on-premises—incorrect.

Conclusion: DRG is essential for hybrid dynamic routing.

Oracle documentation confirms:

"The Dynamic Routing Gateway (DRG) enables dynamic routing between your on-premises network

and VCNs, supporting hybrid cloud connectivity via FastConnect or VPN."

This validates Option B. Reference: Dynamic Routing Gateway Overview - Oracle Help Center

(docs.oracle.com/en-us/iaas/Content/Network/Tasks/managingDRGs.htm).

Requirement: IAM permission to accept cross-tenancy LPG peering.

Option A: “Manage” allows creating and accepting peering—correct.

Option B: “Use” permits using existing LPGs, not accepting requests—incorrect.

Option C: “Inspect” is read-only, insufficient—incorrect.

Option D: “Read” on virtual-network-family doesn’t cover LPG management—incorrect.

Conclusion: Option A is required.

Oracle states:

"To accept a cross-tenancy peering request, the target tenancy needs ‘manage local-peering-

gateways’ permission."

This confirms Option A. Reference: Local VCN Peering - Oracle Help Center (docs.oracle.com/en-

us/iaas/Content/Network/Tasks/localVCNpeering.htm).

Transitive Routing Goal: Traffic from a VCN to an on-premises network via DRG.

DRG Role: Acts as a virtual router connecting VCNs and on-premises networks.

Routing Options:

Static Routes: Manually defined, less scalable for dynamic environments.

Dynamic Routing (BGP): Automatically exchanges routes, ideal for hybrid setups.

Evaluate Options:

A: Static routes work but require manual updates; less efficient.

B: BGP dynamically propagates routes, ensuring correct routing; best fit.

C: LPG is for intra-region peering, not on-premises connectivity; incorrect.

D: Service Gateway is for OCI services, not on-premises; incorrect.

Conclusion: BGP ensures scalable, accurate routing through the DRG.

The DRG supports transitive routing with dynamic protocols like BGP. The Oracle Networking

Professional study guide states, "For transitive routing between VCNs and on-premises networks via

a DRG, configuring BGP on the DRG and CPE enables automatic route propagation, ensuring traffic is

correctly routed" (OCI Networking Documentation, Section: Dynamic Routing Gateway). BGP is

preferred over static routes for hybrid cloud scenarios.

Reference: Oracle Cloud Infrastructure Documentation - Dynamic Routing Gateway.

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.

Reference: Oracle Cloud Infrastructure Documentation - Network Security Groups.

Problem: Instance in private subnet can’t reach Object Storage despite Service Gateway and routing.

Option A: Service Gateway enables private access; public IP isn’t required—incorrect.

Option B: Security lists/NSGs act as firewalls; if outbound traffic to Object Storage CIDR isn’t allowed,

connectivity fails—most likely and correct.

Option C: Service Gateway defaults to all OCI services unless restricted; less likely given setup

verification—incorrect.

Option D: Oracle Cloud Agent is for management, not connectivity—incorrect.

Conclusion: Option B is the most probable cause.

Oracle states:

"For private access to Object Storage via a Service Gateway, ensure security lists or NSGs allow

outbound traffic to the Object Storage CIDR block."

This supports Option B. Reference: Service Gateway Troubleshooting - Oracle Help Center

(docs.oracle.com/en-us/iaas/Content/Network/Tasks/servicegateway.htm#troubleshooting).

Requirement: Centralized logging of Network Firewall traffic for analysis.

OCI Services:

Audit Service: Logs API calls, not network traffic.

Logging Analytics: Analyzes logs but needs log ingestion.

Service Connector Hub with Logging: Moves firewall logs to OCI Logging.

Cloud Guard: Monitors security posture, not detailed logging.

Evaluate Options:

A: Audit Service is for API events; incorrect.

B: Logging Analytics requires log source; incomplete.

C: Service Connector Hub with Logging captures and stores firewall logs; best fit.

D: Cloud Guard is for threat detection, not logging; incorrect.

Conclusion: Service Connector Hub with OCI Logging meets the requirement.

OCI Network Firewall logs require integration with OCI Logging. The Oracle Networking Professional

study guide states, "Service Connector Hub can be configured to transfer Network Firewall logs to

OCI Logging for centralized storage and analysis, meeting auditing requirements" (OCI Networking

Documentation, Section: Network Firewall Logging). This ensures every session is logged and

auditable.

Reference: Oracle Cloud Infrastructure Documentation - Service Connector Hub.