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Oracle - High Hit-Rate 1z0-1124-25 Pass Exam

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Oracle 1z0-1124-25 Exam Syllabus Topics:

Topic
Details

Topic 1

Implement and Operate Secure OCI Networking and Connectivity Solutions: This section of the exam measures the skills of a Cloud Security Specialist and centers around securing networking configurations and interconnectivity in OCI. It involves applying IAM policies for tenancy communication, using bastion services in multi-tier setups, exploring CloudShell capabilities, and evaluating network security layers like OCI Network Firewall, Web Application Firewall (WAF), edge services, and certificates. This section also references obsolete content related to IaC and OKE in networking architectures while touching on zero-trust packet routing models.

Topic 2

Design for Hybrid Networking Architectures: This section of the exam measures the skills of a Network Infrastructure Architect and assesses capabilities in designing hybrid networking environments. It involves demonstrating proficiency with Dynamic Routing Gateway (DRG) configurations, attachments, BGP routing protocols, VPN services, and evaluating FastConnect offerings. This section also emphasizes maintaining reliable multicloud connectivity and implementing IPSec over FastConnect, along with transitive routing practices.

Topic 3

Design and Deploy OCI Virtual Cloud Networks (VCN): This section of the exam measures the skills of a Cloud Network Engineer and covers the design and configuration of Virtual Cloud Networks in Oracle Cloud Infrastructure. It includes understanding VCN and subnet characteristics, implementing both IPv4 and IPv6 addressing, identifying the distinct roles of OCI gateways, and recognizing endpoint types and their application within networking architectures. Knowledge of Object Storage endpoints is also referenced.

Topic 4

Troubleshoot OCI Networking and Connectivity Issues: This section of the exam measures the skills of a Cloud Operations Engineer and evaluates the ability to select appropriate OCI tools and services for troubleshooting network and connectivity problems. It also tests knowledge of using OCI logging services to diagnose and resolve configuration or performance issues effectively.

Oracle Cloud Infrastructure 2025 Networking Professional Sample Questions (Q107-Q112):

NEW QUESTION # 107
In the context of OCI's Zero Trust Packet Routing, which principle emphasizes the necessity of explicitly defining and enforcing access controls at every stage of network communication?

A. Network Segmentation
B. Perimeter Security
C. Least Privilege
D. Implicit Trust

Answer: C

Explanation:
* 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.

NEW QUESTION # 108
You are managing an OCI Network Firewall that protects a VCN with multiple subnets. The application team reports intermittent connectivity issues to a specific application server behind the firewall. You suspect the issue might be related to the firewall's stateful inspection. What would be the most efficient way to troubleshoot if the stateful inspection is causing these connectivity issues?

A. Create a Network Firewall policy with a specific rule that allows all traffic to/from the affected application server, bypassing inspection.
B. Recreate the Network Firewall with a completely different configuration.
C. Disable stateful inspection on the entire Network Firewall to check if the connectivity is restored.
D. Review the Network Firewall logs for denied traffic originating from or destined to the application server.

Answer: D

Explanation:
* 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).

NEW QUESTION # 109
You are implementing IPSec over FastConnect to connect to a third-party network that is also connected to OCI via FastConnect. Your company requires a high level of security and isolation between your network and the third-party's network. Which of the following is the MOST secure approach to ensure network isolation when implementing IPSec over FastConnect in this scenario?

A. Enable flow logs to monitor the traffic that is transmitted.
B. Implement IPSec tunnels between your on-premises network and the third-party's on-premises network, bypassing OCI.
C. Use OCI Network Security Groups (NSGs) or security lists to strictly control traffic between your VCN and the third-party's VCN.
D. Utilize a third-party virtual firewall appliance deployed in OCI and configure IPSec tunnels through the firewall to both your on-premises network and the third-party's network.

Answer: B

Explanation:
* Goal: Maximum security and isolation for IPSec over FastConnect.
* Option A: Direct IPSec between on-premises networks bypasses OCI, ensuring complete isolation- correct and most secure.
* Option B: NSGs/security lists control traffic but allow OCI traversal, less isolated-incorrect.
* Option C: Third-party firewall adds complexity and OCI dependency, reducing isolation-incorrect.
* Option D: Flow logs monitor, don't isolate-incorrect.
* Conclusion: Option A provides the highest isolation.
Oracle notes:
* "For maximum isolation with third-party networks, configure IPSec directly between on-premises endpoints, avoiding OCI traversal."This supports Option A. Reference:IPSec over FastConnect - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/settingupIPSec.
htm#fastconnect).

NEW QUESTION # 110
You have successfully enabled DNSSEC on your OCI DNS zone and provided the DS record to your domain registrar. However, when you test your DNS configuration using online DNSSEC validation tools, you are still seeing errors indicating that DNSSEC validation is failing. What is the most likely reason for this failure?

A. The OCI DNS resolver is not configured to validate DNSSEC signatures.
B. The DNSSEC algorithm used by OCI DNS is not supported by the validation tools.
C. The domain registrar has not yet published the DS record in the parent zone, preventing the chain of trust from being established.
D. The Time To Live (TTL) value for your DNS records is too low, causing validation errors.

Answer: C

Explanation:
* Problem:DNSSEC validation fails post-setup.
* DNSSEC Chain:Requires DS record in parent zone for trust.
* Evaluate Causes:
* A:Low TTL affects caching, not validation; unlikely.
* B:Missing DS in parent zone breaks chain; most likely.
* C:Resolver config is client-side, not affecting external tools; incorrect.
* D:OCI uses standard algorithms; highly unlikely.
* Conclusion:Registrar delay in publishing DS is the primary cause.
DNSSEC relies on the parent zone. The Oracle Networking Professional study guide explains, "DNSSEC validation fails if the registrar hasn't published the DS record in the parent zone, as this breaks the chain of trust" (OCI Networking Documentation, Section: DNSSEC Troubleshooting). This is a common post- enablement issue.

NEW QUESTION # 111
Your organization is migrating a critical three-tier application to OCI. The application requires a highly available and performant database tier. You plan to use Oracle Autonomous Database on Dedicated Exadata Infrastructure. The Autonomous Database subnet must adhere to the organization's security policy, which mandates no direct internet access and private access to other VCN subnets. You need to ensure the proper IP address allocation and routing. Which of the following procedural steps is most effective for achieving this?

A. Create a public subnet for the Autonomous Database and configure a Service Gateway with access to all Oracle Services in OCI. Configure NSG rules allowing only traffic from the application's compute instances.
B. Create a public subnet for the Autonomous Database, assign it a public IP address, and configure a Service Gateway with access to all Oracle Services in OCI. Configure routing to an Internet Gateway.
Secure access using Security Lists allowing traffic only from approved IP ranges.
C. Create a private subnet for the Autonomous Database and configure a Service Gateway with access to Autonomous Database Oracle Services in OCI. Configure NSG rules allowing only traffic from the application's compute instances, and configure routing to a Dynamic Routing Gateway (DRG) for access to other VCN subnets. Reserve a large CIDR block for future database expansion.
D. Create a private subnet for the Autonomous Database and configure a Service Gateway with access to only Object Storage and Yum Server Oracle Services in OCI. Configure NSG rules allowing only traffic from the application's compute instances, and configure routing to a Dynamic Routing Gateway (DRG) for access to other VCN subnets.

Answer: C

Explanation:
* Requirements:Private subnet, no internet, access to other VCN subnets, HA database.
* Analyze Components:
* Public Subnet:Internet-exposed, against policy.
* Private Subnet:No internet, aligns with policy.
* Service Gateway:For OCI services, not ADB connectivity.
* DRG:For inter-VCN routing.
* NSGs:Granular traffic control.
* Evaluate Options:
* A:Public subnet violates no-internet policy; incorrect.
* B:Service Gateway for Object Storage/Yum irrelevant to ADB; incomplete.
* C:Private subnet, NSGs, DRG, and CIDR planning meet all needs; correct.
* D:Public subnet with internet access; violates policy.
* Conclusion:Option C is the most effective approach.
Autonomous Database requires private deployment for security. The Oracle Networking Professional study guide notes, "For Autonomous Database on Dedicated Exadata, use a private subnet with NSGs for access control and a DRG for inter-VCN connectivity, reserving CIDR for scalability" (OCI Networking Documentation, Section: Autonomous Database Networking). Service Gateway isn't used for ADB access, but the private setup ensures compliance.

NEW QUESTION # 112
......

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