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Oracle Cloud Infrastructure 2025 Multicloud Architect Professional Sample Questions (Q21-Q26):

NEW QUESTION # 21
A company is deploying multiple applications in Google Cloud and wants to access a centralized Oracle Exadata Database Service located in Oracle Database@Google Cloud. They want to ensure that the applications in different VPCs can securely communicate with the database without any direct peering between the application VPCs. Which network topology should the company use to securely connect applications in different VPCs to the centralized Oracle Exadata Database Service?

A. Direct Connect between applications and Oracle Exadata Database Service
B. Mesh topology with VPC peering
C. Flat topology with public IPs
D. Hub and spoke topology with a network virtual appliance (NVA) for centralized connectivity

Answer: D

Explanation:
A hub-and-spoke topology with a network virtual appliance (NVA) in GCP allows multiple application VPCs (spokes) to securely connect to a centralized Exadata Database Service (hub) without direct peering between VPCs. The NVA manages traffic and security. Direct Connect (Option B) isn't a GCP term here, mesh peering (Option C) requires inter-VPC connections, and flat topology (Option D) is insecure. Oracle's networking guide supports this topology for Database@Google Cloud.

NEW QUESTION # 22
In a disaster recovery scenario for Oracle Database@Azure using Data Guard, where would the standby database typically reside?

A. In a separate Availability Domain within the same Azure data center.
B. In a different Azure region.
C. On a set of Azure Virtual Machines in the same Azure region.
D. In a separate OCI region.

Answer: D

Explanation:
For a true disaster recovery scenario, the standby database needs to be geographically separated from the primary database to protect against region-wide outages. Since the Oracle database runs on Exadata infrastructure within OCI, the standby database would also reside on Exadata in a different OCI region. This provides the necessary redundancy and resilience in case the primary OCI region becomes unavailable. The other options are not suitable for a full DR scenario:
A different Azure region is irrelevant because the database itself is not running on Azure infrastructure.
Azure Virtual Machines are not used for the database tier in this architecture.
Availability Domains provide fault tolerance within the same region, not across region

NEW QUESTION # 23
What is the function of a NAT Gateway in an OCI VCN?

A. To balance network traffic across multiple instances in a subnet.
B. To provide DNS resolution for instances within the VCN.
C. To provide a secure tunnel for connecting to on-premises networks.
D. To allow instances in private subnets to initiate outbound connections to the internet without having public IP addresses.

Answer: D

Explanation:
Here's a breakdown of the function of a NAT Gateway in OCI:
Outbound Internet Access for Private Subnets: The primary purpose of a NAT Gateway is to enable instances in private subnets (subnets without direct internet access) to initiate outbound connections to the internet. This is crucial for tasks like downloading software updates, accessing external APIs, or connecting to other internet-based services.
No Public IP Required: Instances in private subnets using a NAT Gateway do not need to have public IP addresses assigned to them. This enhances security by preventing direct inbound connections from the internet to these instances.
NAT Functionality: The NAT Gateway performs Network Address Translation (NAT), which translates the private IP addresses of the instances to a public IP address owned by the NAT Gateway when they initiate outbound connections. When the responses come back from the internet, the NAT Gateway translates the destination IP address back to the private IP address of the originating instance.
Why the other options are incorrect:
A). To provide a secure tunnel for connecting to on-premises networks: Secure tunnels to on-premises networks are provided by VPN Connect or FastConnect, not a NAT Gateway.
C). To balance network traffic across multiple instances in a subnet: Network traffic load balancing is handled by Load Balancers, not a NAT Gateway.
D). To provide DNS resolution for instances within the VCN: DNS resolution is provided by a DNS Resolver within the VCN, not a NAT Gateway.

NEW QUESTION # 24
What is the purpose of federating the Azure tenant's Microsoft Entra ID with an OCI identity domain?

A. To specify an Azure Virtual Network (VNet) in Azure during provisioning
B. To allow Azure users to log in to the OCI Console using the same Azure credentials used for Azure
C. To specify an Azure Virtual Network (VNet) in Azure during provisioning
D. To enable bi-directional communication between Azure and OCI

Answer: B

Explanation:
Federating Microsoft Entra ID (formerly Azure AD) with an OCI identity domain enables single sign-on (SSO), allowing Azure users to access the OCI Console with their existing Azure credentials. This enhances user experience and security in a multicloud setup. Options B and C (repeated in the original) relate to networking, not identity, and Option A is vague and incorrect. OCI's federation documentation outlines this SSO purpose clearly.

NEW QUESTION # 25
To minimize the cost of your Autonomous Database while ensuring it scales automatically to handle peak loads. Which configuration is MOST suitable?

A. Base Database on a virtual machine with auto-scaling configured.
B. Autonomous Database on Dedicated Infrastructure with manual scaling.
C. Autonomous Database on Shared Infrastructure with auto-scaling enabled.
D. Base Database on bare metal with manual scaling.

Answer: C

Explanation:
Here's why:
Shared Infrastructure: Using shared infrastructure is inherently more cost-effective than dedicated infrastructure. You share the underlying hardware resources with other users, which reduces your costs significantly.
Auto-scaling: Enabling auto-scaling allows the Autonomous Database to automatically adjust its compute and storage resources based on workload demands. This means you only pay for the resources you actually consume. During peak loads, the database scales up to handle the increased demand, and during periods of low activity, it scales down to minimize costs.
Why other options are less suitable:
a) Autonomous Database on Dedicated Infrastructure with manual scaling: Dedicated infrastructure is the most expensive option. Manual scaling requires manual intervention to adjust resources, which is not ideal for handling unpredictable peak loads and does not minimize cost automatically.
c) Base Database on a virtual machine with auto-scaling configured: While this offers some flexibility, it requires significantly more management overhead compared to Autonomous Database. You are responsible for managing the operating system, database software, backups, and other administrative tasks. Autonomous Database handles all of this for you.
d) Base Database on bare metal with manual scaling: Bare metal is the most expensive and least flexible option. Manual scaling makes it unsuitable for handling peak loads efficiently and cost-effectively.

NEW QUESTION # 26
......

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Oracle Cloud Infrastructure 2025 Multicloud Architect Professional Sample Questions (Q21-Q26):

Quiz 2025 Authoritative Oracle 1Z0-1151-25: Sure Oracle Cloud Infrastructure 2025 Multicloud Architect Professional Pass

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