Oracle 1Z0-1124-25 Certification Dumps and Exam Questions – Fast Exam Prep

Question 1: You are responsible for a Site-to-Site VPN between your on-premises environment and OCI. Recently, you’ve observed that the VPN tunnel repeatedly drops and reconnects. Internet connectivity on both sides is stable, and the IKE configuration has been verified as correct. What is the most likely reason for these recurring VPN tunnel interruptions?

A) The on-premises Customer-Premises Equipment (CPE) is configured with an incorrect public IP address. B) The OCI Dynamic Routing Gateway (DRG) is experiencing a temporary outage. C) There is a misconfiguration in the security rules, blocking the IKE or ESP (Encapsulating Security Payload) traffic. D) The on-premises firewall is configured with incorrect NAT-Traversal settings.

Correct Answer: C

Question 2: You need to build a network diagnostic tool in Cloud Shell to test connectivity to different endpoints within your VCN. To improve security, you want to grant only the minimal permissions required for Cloud Shell to run network diagnostic commands such as ping, traceroute, and nc. Which IAM principle and specific action(s) offer the most restrictive, least-privilege access needed for Cloud Shell to perform these diagnostics?

A) An IAM user with the read permission on all virtual-network-family resources. B) Cloud Shell session using Instance Principals, belonging to a dynamic group with a policy allowing network-security-groups and vnics to be read and used C) An IAM group with inspect permission on virtual-network-family in the target compartment. D) An IAM group with the use permission on the virtual-network-family aggregate resource in the tenancy.

Correct Answer: B

Question 3: You are deploying a three-tier web application using IaC and Oracle Kubernetes Engine (OKE) within a single VCN. The environment includes a public web tier (running on OKE), an application tier, and a database tier. You want to enforce strict access control so that only the web tier can reach the application tier, and only the application tier can reach the database tier, using Network Security Groups (NSGs). Although your IaC correctly builds all resources, the web-tier Pods cannot connect to the application tier. Upon reviewing your configuration, you discover that the NSG assignments for the OKE node pool are incorrect. Which NSG misconfiguration is the most likely cause of this connectivity failure?

A) The NSG associated with the OKE node pool (web tier) allows ingress traffic from 0.0.0.0/0 on port 80, but egress traffic to the application tier's NSG is missing a rule allowing TCP traffic on port 8080 (the port the application tier is listening on). B) The NSG associated with the OKE node pool (web tier) is missing an ingress rule allowing traffic from the VCN CIDR on port 443. This is causing a routing problem within the VCN. C) The NSG associated with the application tier allows ingress traffic from the VCN CIDR, but the NSG associated with the OKE node pool (web tier) has no ingress rules at all. Therefore, the OKE nodes are not reachable. D) The NSG associated with the OKE node pool (web tier) only allows egress traffic to the internet and does not have a rule permitting egress traffic to the application tier's NSG on the required port (8080).

Correct Answer: D

Question 4: You are designing a solution that uses IPSec encryption over a FastConnect link between your on-premises network and OCI. Because IPSec adds overhead, you’re concerned about how it will affect the maximum supported MTU. What is the key factor you should consider when determining the appropriate MTU size for the IPSec tunnel interfaces in this setup?

A) The available bandwidth of the FastConnect circuit. A larger MTU requires a higher bandwidth connection. B) The smallest MTU supported by any device along the entire network path between your on-premises network and OCI, including the FastConnect provider's network. C) The MTU size of the underlying Ethernet frames used by the FastConnect circuit. D) The fragmentation settings on the DRG in OCI.

Correct Answer: B

Question 5: You are managing an OCI Network Firewall that secures a VCN containing multiple subnets. The application team reports intermittent connectivity problems when accessing a particular application server behind the firewall. You suspect the firewall’s stateful inspection might be contributing to the issue. What is the most efficient method to determine whether stateful inspection is causing these connectivity problems?

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

Correct Answer: C

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Oracle 1Z0-1124-25 Exam Dumps

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