100% Pass Quiz 2025 Valid 1z0-1124-25: Valid Oracle Cloud Infrastructure 2025 Networking Professional Test Labs

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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	Plan and Design OCI Networking Solutions and App Services: This section of the exam measures the skills of a Solutions Architect and focuses on planning comprehensive networking and application service strategies. It includes understanding IP management practices, choosing procedural steps for deployments, and evaluating OCI load balancers, DNS configurations, and traffic steering options. Basic familiarity with DNS Security Extensions (DNSsec) is acknowledged as a placeholder for future integration.
Topic 3	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.
Topic 4	OCI Networking Best Practices: This section of the exam measures the skills of a Cloud Solutions Architect and covers essential best practices for designing secure, efficient, and scalable networking solutions in OCI. It includes architectural design, connectivity setup, security hardening, and monitoring and logging standards that align with industry and Oracle-recommended guidelines.

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Oracle Cloud Infrastructure 2025 Networking Professional Sample Questions (Q39-Q44):

NEW QUESTION # 39
You are troubleshooting a connectivity issue between two compute instances within the same VCN. Both instances are in different subnets. Instance A (IPv4: 10.0.1.10, IPv6: fc00:1:1::10) can ping its subnet gateway (10.0.1.1) and can ping the IPv6 address of Instance B (fc00:1:2::20), but cannot ping Instance B's IPv4 address (10.0.2.20). The security lists and network security groups (NSGs) are configured to allow all traffic between the subnets. The route table for Instance A's subnet has a rule to route all traffic destined to 10.0.2.0
/24 subnet to the VCN Local Peering Gateway. What is the most probable cause?

A. The "ping" utility is not supported on the IPv6 address.
B. The VCN does not have IPv6 enabled.
C. The route table for Instance B's subnet is missing a rule to route traffic destined for 10.0.1.0/24 to the VCN Local Peering Gateway.
D. IPv6 traffic cannot be filtered by security lists or NSGs.

Answer: C

Explanation:
* Analyze Connectivity Successes:Instance A can ping its subnet gateway (10.0.1.1), indicating that local subnet routing and security rules are functioning for IPv4. It can also ping Instance B's IPv6 address (fc00:1:2::20), confirming that IPv6 routing and security rules between subnets are operational.
* Identify the Failure:Instance A cannot ping Instance B's IPv4 address (10.0.2.20). Since security lists and NSGs allow all traffic, the issue is unlikely to be a security configuration problem.
* Examine Routing for Instance A:The route table for Instance A's subnet (10.0.1.0/24) has a rule directing traffic to 10.0.2.0/24 via the VCN Local Peering Gateway (LPG). In OCI, LPGs are used for intra-region VCN peering, but here, both instances are in the same VCN, so this rule is likely a misconfiguration or irrelevant unless peering is involved. However, the successful IPv6 ping suggests basic connectivity exists.
* Check Return Path from Instance B:For a ping to succeed, Instance B must send ICMP replies back to Instance A (10.0.1.10). Instance B's subnet (10.0.2.0/24) needs a route table entry to send traffic to
10.0.1.0/24. Without this, replies are dropped, causing the IPv4 ping to fail. The IPv6 success indicates that IPv6 routing is correctly configured both ways, possibly via SLAAC or default routes.
* Evaluate Options:
* A:Incorrect. IPv6 is enabled, as Instance A pings Instance B's IPv6 address.
* B:Correct. Missing route for 10.0.1.0/24 in Instance B's subnet prevents IPv4 replies.
* C:Incorrect. Security lists and NSGs can filter IPv6 traffic in OCI.
* D:Incorrect. Ping supports IPv6, as evidenced by the successful IPv6 ping.
The most probable cause is a missing route in Instance B's subnet route table. In OCI, each subnet has its own route table, and for instances in different subnets within the same VCN to communicate, both subnets must have appropriate routes. The successful IPv6 ping suggests that IPv6 routing is intact (likely due to default behavior or SLAAC), but IPv4 requires explicit routing. Per the Oracle Networking Professional study guide,
"Route tables must be configured to direct traffic to the appropriate next hop for inter-subnet communication within a VCN" (OCI Networking Documentation, Section: Virtual Cloud Networks).

NEW QUESTION # 40
You are designing a multi-tier application within an OCI Virtual Cloud Network (VCN). The application comprises a public-facing web tier in one subnet, an application tier in another, and a database tier in a third.
For security reasons, you want to ensure that only the application tier can initiate connections to the database tier. The web tier needs to be able to communicate with the application tier, but not directly with the database tier. You are using private IP addresses within your VCN. Which procedural step is MOST effective to achieve this network isolation?

A. Create separate security lists for each subnet and configure ingress and egress rules to restrict traffic accordingly. Configure the route table for the Web Tier subnet to route traffic destined for the Database Tier subnet through the Application Tier.
B. Create a single Network Security Group (NSG) and associate it with all three subnets. Configure ingress and egress rules within the single NSG to restrict traffic accordingly.
C. Create separate Network Security Groups (NSGs) for each tier and configure ingress and egress rules to restrict traffic accordingly. Configure the route table for the Web Tier subnet to route traffic destined for the Database Tier subnet through the Application Tier.
D. Create separate security lists for each subnet and configure ingress and egress rules to restrict traffic accordingly. Create appropriate route rules in each subnet's route table.

Answer: D

Explanation:
* Requirements: App tier only initiates to DB; web tier to app tier only.
* Option A: NSGs with forced routing through app tier adds complexity and latency-less effective.
* Option B: Single NSG lacks subnet-level isolation-incorrect.
* Option C: Separate security lists per subnet with ingress/egress rules enforce isolation; route tables ensure proper VCN routing-correct and effective.
* Option D: Security lists are good, but routing web-to-DB via app tier is unnecessary-incorrect.
* Conclusion: Option C achieves isolation efficiently.
Oracle states:
* "Use separate security lists per subnet with ingress/egress rules to isolate tiers. Route tables manage intra-VCN traffic without forced hops."This supports Option C. Reference:Security Lists Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts/securitylists.htm).

NEW QUESTION # 41
Your team is deploying a critical, highly available application that relies on accessing a MySQL Database Service instance within OCI. The application requires a stable and predictable endpoint for database connectivity, even during database failover events. Which endpoint configuration is most suitable to ensure seamless application connectivity in this high-availability scenario?

A. Using a Service Gateway to connect to the MySQL Database Service endpoint.
B. Using the private IP address of the primary MySQL Database Service instance directly.
C. Using the public IP address of the MySQL Database Service instance.
D. Using a DNS hostname that resolves to the floating private IP address of the active MySQL Database Service instance.

Answer: D

Explanation:
* 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.

NEW QUESTION # 42
When migrating workloads from another cloud provider to OCI, what is a key consideration when choosing a connectivity strategy to ensure optimal network performance?

A. Factoring in the bandwidth requirements of the applications being migrated and choosing a connection that can accommodate peak traffic loads
B. Ignoring the geographical proximity of the cloud regions being interconnected
C. Only considering managed connectivity solutions to avoid the complexity of configuring VPNs or direct interconnects
D. Prioritizing the lowest possible initial setup cost, even if it results in higher ongoing operational expenses

Answer: A

Explanation:
* Goal: Ensure optimal performance in connectivity strategy.
* Option A: Low setup cost may compromise performance-incorrect.
* Option B: Proximity affects latency; ignoring it harms performance-incorrect.
* Option C: Matching bandwidth to app needs ensures performance-correct.
* Option D: Limiting to managed solutions restricts options-incorrect.
* Conclusion: Option C is the key consideration.
Oracle advises:
* "Consider application bandwidth requirements and peak loads when selecting a connectivity strategy for optimal performance during migration."This supports Option C. Reference:Network Planning for Migration - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts/migration.
htm#planning).

NEW QUESTION # 43
In a Zero Trust network architecture, what is the primary purpose of implementing micro-segmentation within OCI VCNs?

A. To simplify inter-region connectivity.
B. To increase network bandwidth.
C. To reduce the number of required route tables.
D. To limit the blast radius of potential security breaches.

Answer: D

Explanation:
* Context: Zero Trust assumes no trust, requiring strict isolation (micro-segmentation).
* Option A: Bandwidth isn't increased by segmentation-incorrect.
* Option B: Segmentation may increase route tables for granularity, not reduce them-incorrect.
* Option C: Micro-segmentation isolates workloads, limiting breach impact (blast radius)-core Zero Trust goal and correct.
* Option D: Inter-region connectivity isn't simplified by micro-segmentation-incorrect.
* Conclusion: Option C aligns with Zero Trust principles.
Oracle notes:
* "Micro-segmentation in OCI VCNs, using NSGs and security lists, limits the blast radius of breaches by isolating resources, a key Zero Trust principle."This supports Option C. Reference:Zero Trust in OCI - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Concepts/zerotrust.htm).

NEW QUESTION # 44
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100% Pass Quiz 2025 Valid 1z0-1124-25: Valid Oracle Cloud Infrastructure 2025 Networking Professional Test Labs

Oracle 1z0-1124-25 Exam Syllabus Topics:

Oracle 1z0-1124-25 Exam Questions - 1 year of Free Updates

Oracle Cloud Infrastructure 2025 Networking Professional Sample Questions (Q39-Q44):

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