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NEW QUESTION # 50
How does network connectivity between Google Cloud Virtual Private Clouds (VPCs) and the Exadata systems in Oracle Database@Google Cloud primarily function?
Answer: A
Explanation:
This is the standard and recommended method for high-performance, low-latency connectivity between Google Cloud and OCI.
Google Cloud Partner Interconnect: This allows you to connect your on-premises network or another cloud provider (in this case, OCI) to your Google Cloud VPC.
Oracle FastConnect: This is Oracle's dedicated private network connection to OCI.
By combining these two services, a direct, high-bandwidth connection is established, bypassing the public internet and ensuring optimal performance for applications accessing the Exadata databases.
The other options are incorrect:
While a "direct, physical cross-connect" might sound plausible, it's not the practical implementation. Partner Interconnect and FastConnect provide the abstracted, managed connectivity.
An IPsec VPN over the public internet is not suitable for performance-sensitive database workloads due to latency and bandwidth limitations.
While Google Cloud's Cloud VPN could theoretically be used to connect to an OCI VCN, it's not the recommended or optimized approach for Oracle Database@Google Cloud. The Partner Interconnect/FastConnect combination is designed specifically for this purpose.
NEW QUESTION # 51
Which of the following actions requires coordination with Oracle support when working with Oracle Database@Google Cloud?
Answer: D
Explanation:
Here's a breakdown:
A). Creating a new database within an existing Exadata VM Cluster: This is a standard database administration task that customers can perform themselves using SQL*Plus, SQL Developer, or other database management tools. It doesn't require Oracle support.
C). Applying database patches to a CDB (Container Database): While patching requires careful planning and execution, it's generally a customer responsibility within Oracle Database@Google Cloud. Oracle provides the patches, but the application is typically handled by the customer's database administrators.
D). Backing up a PDB (Pluggable Database) to OCI Object Storage: While OCI Object Storage might be involved, the backup operation itself is a standard database administration task that the customer performs. Configuring backups to external storage might require initial setup, but the backups themselves don't necessitate ongoing Oracle support coordination.
B). Scaling up the compute resources of an Exadata VM Cluster: Scaling compute resources (like adding more compute nodes or increasing CPU/memory) involves changes to the underlying infrastructure provided by Oracle. This requires coordination with Oracle support because it's not a self-service operation through the Google Cloud console. It's a managed infrastructure change.
NEW QUESTION # 52
In the Oracle Database@Azure service, how are resources provisioned?
Answer: A
Explanation:
Oracle Database@Azure is a service where Exadata infrastructure is deployed within Azure datacenters. Therefore, the provisioning of the underlying infrastructure-the Exadata machines, networking, and virtual machine cluster-is managed through the Azure portal.
Here's a breakdown:
Exadata Infrastructure and VM Cluster: These are the foundational components of the service. Because the hardware and virtualization reside within Azure's environment, their provisioning and management are handled through the Azure portal. This includes setting up the compute nodes, storage servers, network configuration, and the virtual machine cluster that runs the Oracle software.
Why the other options are incorrect:
a). Both Oracle Exadata Infrastructure and VM Cluster, as well as Oracle container and pluggable databases, are provisioned through the Azure portal: While the infrastructure is managed in Azure, the actual database instances (Container Databases and Pluggable Databases) are managed using Oracle tools and potentially through the OCI console for some specific tasks, not directly through the Azure portal.
b). Oracle Exadata Infrastructure and VM Cluster are set up in the OCI console, while Oracle container and pluggable databases are managed in the Azure portal: This is incorrect. Since the Exadata hardware resides in Azure, the OCI console is not involved in the infrastructure provisioning.
c). Oracle Exadata VM Cluster and container databases are provisioned via the OCI console: This is also incorrect. The VM cluster resides within Azure, so the OCI console is not used for its provisioning.
NEW QUESTION # 53
What does Oracle Base Database Service use in Oracle Cloud Infrastructure to provide high availability and disaster recovery?
Answer: D
Explanation:
The Oracle Base Database Service in OCI leverages Availability Domains (ADs) and Fault Domains (FDs) to ensure high availability (HA) and disaster recovery (DR). ADs are isolated data centers within a region, preventing single points of failure, while FDs are subdivisions within an AD, further isolating hardware for redundancy. Availability Sets and Zones (Options A and B) are Azure-specific terms, and Geography (Option C) is too vague. OCI's architecture documentation confirms ADs and FDs as the foundation for HA/DR in database services.
NEW QUESTION # 54
What is the purpose of a Network Security Group (NSG) in OCI?
Answer: C
Explanation:
Here's a breakdown of Network Security Groups (NSGs) in OCI:
Virtual Firewall at the VNIC Level: NSGs act as virtual firewalls that control traffic at the Virtual Network Interface Card (VNIC) level. This means you can apply security rules to individual instances or groups of instances by associating them with NSGs.
Granular Security Policies: NSGs allow you to define granular security policies based on:
Source and Destination IP addresses or CIDR blocks: You can specify which IP addresses or CIDR blocks are allowed to send or receive traffic.
Source and Destination Ports: You can specify which TCP or UDP ports are allowed.
Protocols: You can specify which protocols (e.g., TCP, UDP, ICMP) are allowed.
Source and Destination NSGs: This is a key feature. You can create rules that allow traffic between specific NSGs, creating micro-segmentation within your VCN.
Why other options are incorrect:
A). To define routing policies for subnets within a VCN: Routing policies are defined by Route Tables, not NSGs.
B). To act as a central point for managing internet access for all subnets in a VCN: Internet access is managed by an Internet Gateway and associated Route Tables, not NSGs. While NSGs can control traffic entering and leaving a subnet via the Internet Gateway, that is not their primary function.
D). To provide DNS resolution services for instances within a VCN: DNS resolution is provided by a DNS Resolver within the VCN, not NSGs.
NEW QUESTION # 55
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