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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	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 3	Transitive Routing: This section of the exam measures the skills of a Network Security Engineer and focuses on the interpretation and synthesis of transitive routing configurations. It includes understanding how DRG, Local Peering Gateways (LPG), and network appliances interact in a routed network and implementing those configurations effectively.
Topic 4	Migrate Workloads to OCI: This section of the exam measures the skills of a Cloud Migration Specialist and focuses on identifying the best networking connectivity strategies when migrating workloads to Oracle Cloud. It includes scenarios involving on-premises infrastructure, other cloud providers, and multicloud environments, ensuring proper connectivity and minimal downtime during transitions.
Topic 5	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.

Oracle Cloud Infrastructure 2025 Networking Professional Sample Questions (Q27-Q32):

NEW QUESTION # 27
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 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.
B. IPv6 traffic cannot be filtered by security lists or NSGs.
C. The "ping" utility is not supported on the IPv6 address.
D. The VCN does not have IPv6 enabled.

Answer: A

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 # 28
You are responsible for maintaining the network connectivity between OCI and Azure using the OCI-Azure Interconnect. You need to perform planned maintenance on your on-premises network, which will temporarily disrupt the BGP (Border Gateway Protocol) sessions between your on-premises network and both OCI and Azure. You want to ensure that traffic between OCI and Azure continues to flow without interruption during the maintenance window. Which action is MOST important to take before starting the maintenance to ensure continuous connectivity between OCI and Azure?

A. Notify Oracle and Microsoft support teams about the planned maintenance window.
B. Increase the BGP keepalive timers on both OCI and Azure to prevent the sessions from timing out.
C. Configure static routes in OCI and Azure to directly route traffic between the VCNs/VNets without relying on BGP.
D. Disable the BGP sessions on both OCI and Azure before starting the maintenance.

Answer: C

Explanation:
* Goal: Ensure OCI-Azure traffic during BGP disruption.
* Option A: Static routes bypass BGP dependency, maintaining connectivity-correct.
* Option B: Disabling BGP stops routing-incorrect.
* Option C: Notification doesn't ensure connectivity-incorrect.
* Option D: Keepalive timers delay detection, not prevent disruption-incorrect.
* Conclusion: Option A is most critical.
Oracle notes:
* "For uninterrupted OCI-Azure Interconnect traffic during BGP maintenance, configure static routes between VCNs and VNets."This supports Option A. Reference:OCI-Azure Interconnect - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/ociazureinterconnect.htm).

NEW QUESTION # 29
A development team has deployed a three-tier application in an OCI VCN. The application consists of a public-facing web tier, an application tier, and a database tier. The team reports that the web tier instances can communicate with the application tier instances, but the application tier instances cannot connect to the database tier instances. All security lists are configured to allow all traffic within the VCN. Which OCI Networking diagnostic tool would BEST help you quickly isolate the root cause of this connectivity issue?

A. VCN Flow Logs
B. Network Firewall
C. OCI Bastion
D. Connection Diagnostics

Answer: D

Explanation:
* Problem: App tier can't reach DB tier despite open security lists.
* Option A: Flow Logs show traffic details but require analysis, slowing diagnosis-less efficient.
* Option B: Connection Diagnostics tests connectivity (e.g., ping, traceroute) between resources, quickly pinpointing failures-correct.
* Option C: Network Firewall controls traffic, not diagnoses-incorrect.
* Option D: Bastion is for access, not troubleshooting-incorrect.
* Conclusion: Connection Diagnostics is the best tool for quick isolation.
Oracle states:
* "Connection Diagnostics provides rapid testing of network connectivity between OCI resources, ideal for isolating issues like tier-to-tier failures."This validates Option B. Reference:Network Troubleshooting - Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks
/troubleshooting.htm#connectiondiagnostics).

NEW QUESTION # 30
Your organization is migrating a legacy application to OCI. This application relies on a specific IP address for its external communication, and you need to maintain this IP address during the migration. Which OCI Load Balancer feature or configuration can help you achieve this while ensuring high availability for the application?

A. Using a private IP address for the load balancer and NAT Gateway for outbound traffic.
B. Configuring the Flexible Load Balancer with a reserved public IP address.
C. Utilizing the Network Load Balancer (NLB) with its inherent ability to preserve client IP addresses.
D. Deploying multiple Flexible Load Balancers with different public IP addresses and using DNS round- robin.

Answer: B

Explanation:
* Requirement Breakdown: Maintain a specific public IP for external communication with high availability (HA).
* Option A: Private IP with NAT Gateway is for outbound traffic from private subnets, not inbound public access. It doesn't support a fixed public IP for external clients.
* Option B: Network Load Balancer (NLB) preserves client IPs (source IP) but doesn't allow reserving a specific public IP. IPs are assigned dynamically, failing the requirement.
* Option C: Flexible Load Balancer (Application Load Balancer) supports reserving a public IP, ensuring the legacy IP is maintained. It also provides HA across Availability Domains (ADs).
* Option D: Multiple load balancers with DNS round-robin don't maintain a single IP-clients see different IPs, violating the requirement.
* Conclusion: Option C meets both the specific IP and HA needs efficiently.
Per Oracle documentation:
* "The Application Load Balancer (Flexible Load Balancer) allows you to reserve a public IP address, which can be associated with the load balancer for consistent external access."
* "It provides high availability by distributing traffic across multiple backend instances."This supports Option C. Reference:Load Balancer Overview - Oracle Help Center(docs.oracle.com/en-us/iaas/Content
/Balance/Concepts/balanceoverview.htm).

NEW QUESTION # 31
You are configuring a FastConnect connection between your on-premises network and OCI. You need to establish a BGP (Border Gateway Protocol) session to exchange routing information. You want to use private peering to securely connect to your private resources within OCI. What are the MINIMUM requirements for configuring BGP for private peering over FastConnect?

A. A private AS number for the on-premises side and a valid ASN for the OCI side.
B. A valid ASN for the on-premises side and the OCI side and a non-overlapping IP address range for BGP peering on both the on-premises and OCI side.
C. A public IP address range for BGP peering on the on-premises side and OCI side and an established DRG.
D. A public AS number and a valid ASN for the OCI side.

Answer: B

Explanation:
* Goal: Minimum BGP setup for private FastConnect peering.
* Option A: Public ASN isn't required; private ASNs work-incorrect.
* Option B: Private ASN is allowed, but doesn't specify IPs-insufficient.
* Option C: Public IPs aren't needed for private peering-incorrect.
* Option D: Valid ASNs (public or private) and non-overlapping private IPs are the minimum for BGP- correct.
* Conclusion: Option D meets the requirements.
Oracle notes:
* "For BGP over FastConnect private peering, provide a valid ASN (public or private) and a non- overlapping IP range for peering."This confirms Option D. Reference:FastConnect BGP Configuration
- Oracle Help Center(docs.oracle.com/en-us/iaas/Content/Network/Tasks/fastconnect.htm#BGP).

NEW QUESTION # 32
......

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