IT Certification Exam Questions & Answers

Q32. A company wants to leverage a best-of-breed approach for their application stack. They plan to use OCI for its Autonomous Database, Azure for its container orchestration (AKS), and AWS for its object storage (S3).
Considering cost optimization and minimizing data egress charges, which strategy is the MOST efficient for transferring large datasets between these services?

Q33. In a hybrid cloud migration, which OCI component is essential for dynamically routing traffic between on- premises networks and OCI Virtual Cloud Networks (VCNs), facilitating seamless communication?

Q34. In a multi-tier application architecture with separate public and private subnets, where should an OCI Bastion host be placed to provide secure access to resources in the private subnets without exposing them to the internet?

Q35. You are designing a highly available web application in OCI. You’ve created a VCN with two public subnets across different Availability Domains (ADs). You need to enable IPv6 support for the application to cater to a growing number of IPv6-only clients. You plan to use a Load Balancer to distribute traffic to backend compute instances in the public subnets. Which of the following approaches ensures the highest level of resilience and IPv6 connectivity for your application?

Q36. Your company utilizes a hybrid cloud architecture, connecting its on-premises network to an OCIVCN using a FastConnect private peering connection. You need to ensure that instances within a specific subnet in the VCN can only communicate with resources in a designated IP address range within the on-premises network.
What is the MOST effective way to achieve this specific network isolation?

Q37. When establishing cross-tenancy connectivity using Remote Peering Connections (RPCs), which IAM policy statement is essential to grant the requesting tenancy the ability to initiate the connection?

Q38. When troubleshooting inter-region connectivity issues between VCNs peered via a Dynamic Routing Gateway (DRG), which OCI tool is most effective for verifying the routing configuration and identifying potential misconfigurations?

Q39. You have deployed a distributed application across OCI and Azure. You have established the OCI-Azure Interconnect. You are experiencing packet loss and performance degradation when transmitting large volumes of data between the two cloud providers. You have verified that the network devices on both sides are correctly configured. Which is NOT a typical root cause to investigate when troubleshooting performance issues across the OCI-Azure Interconnect?

Q40. You’re tasked with creating a network diagnostic tool using Cloud Shell to test connectivity to various endpoints from within your VCN. To enhance security, you want to ensure the tool only has the necessary permissions to perform network diagnostics (e.g., ping, traceroute, nc). Which IAM principle and associated action(s) provide the MOST restrictive, least-privilege access for Cloud Shell to perform network diagnostic tasks?

Q41. You are responsible for managing access to an Oracle Autonomous Database (ADB) instance inyour OCI environment. You need to configure a secure connection to the ADB from compute instances located in a private subnet. You want to limit access to the ADB to only the designated compute instances. Which type of endpoint, in conjunction with appropriate security rules, provides the MOST granular control over network access to the Autonomous Database?

Q42. Which OCI component facilitates transitive routing between VCNs in different regions via a dedicated, private network backbone, while also enabling connectivity to on-premises networks?

Q43. 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?

Q44. When migrating workloads requiring high availability and redundancy for on-premises connectivity to OCI, which approach is recommended?

Q45. When setting up cross-tenancy VCN peering using Local Peering Gateways (LPGs), which IAM permission is required in the target tenancy to accept the peering request?

Q46. You are designing a highly available application that requires low latency communication between OCI regions. You have two VCNs, VCN-A in Region 1 and VCN-B in Region 2. These VCNs have non- overlapping CIDR blocks and you want to establish a private, direct connection between them for optimal performance. Which of the following steps are necessary to establish this cross-region connectivity using the native OCI networking capabilities?

Q47. 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?

Q48. You are tasked with setting up a secure connection from an OCI Compute instance running in a private subnet to a third-party API that is only accessible over the internet via a static public IP address. Your company policy prohibits exposing the compute instance directly to the internet. Which combination of VCN resources BEST facilitates this secure outbound connection to the third-party API?