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NEW QUESTION # 32
What does Oracle Base Database Service utilize in Oracle Cloud Infrastructure to ensure high availability and disaster recovery?
Answer: C
Explanation:
Availability Domains (ADs): These are independent data centers within an OCI region. Each region has multiple ADs. Placing database instances in different ADs protects against failures of an entire data center.
Fault Domains (FDs): Within each AD, there are fault domains. These are groupings of hardware and infrastructure designed to minimize the impact of hardware failures. Placing database instances in different FDs within the same AD protects against failures of physical hardware like power supplies or network switches.
By utilizing both Availability Domains and Fault Domains, Oracle Base Database Service ensures high availability by providing redundancy at multiple levels:
High Availability: Distributing instances across different FDs within an AD protects against local hardware failures.
Disaster Recovery: Distributing instances across different ADs protects against larger-scale events that might affect an entire data center.
Here's why the other options are not the primary mechanism:
Geography: While OCI regions are geographically separated, "geography" itself isn't a specific feature used for high availability within a region. Regions are used for broader disaster recovery strategies (e.g., replicating data to a different region).
Availability set: This is a concept used in other cloud providers (like Azure) but not in OCI.
Availability zone: This is a term used in other cloud providers (like AWS) and is conceptually similar to Availability Domains in OCI.
NEW QUESTION # 33
In a disaster recovery scenario for Oracle Database@Azure using Data Guard, where would the standby database typically reside?
Answer: A
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 # 34
Which of the following is NOT a benefit of using Oracle Interconnect for Azure compared to an IPsec VPN solution for connecting OCI and Azure?
Answer: B
Explanation:
While Oracle Interconnect for Azure provides a private, dedicated connection, it does not inherently encrypt the traffic. The connection itself is secure in the sense that it's not traversing the public internet, but data encryption needs to be implemented at higher layers (e.g., using TLS/SSL at the application level, or using IPsec VPNs over the Interconnect if needed).
Here's why the other options are benefits:
a) Higher bandwidth and lower latency: FastConnect and ExpressRoute provide significantly higher bandwidth and lower latency compared to IPsec VPNs, which are limited by internet bandwidth and introduce more overhead.
b) Dynamic routing with BGP: Oracle Interconnect for Azure uses BGP (Border Gateway Protocol) for dynamic routing between the two cloud environments.
c) Simplified network management: With a dedicated connection and BGP, network management is generally simpler compared to managing multiple IPsec VPN tunnels, especially as network requirements scale.
NEW QUESTION # 35
What is the next essential step on the Azure side to establish the connection after creating the FastConnect virtual circuit on the OCI side?
Answer: A
Explanation:
Here's a breakdown:
OCI Side: You create a FastConnect virtual circuit. Oracle provides you with a service key. This key is crucial for connecting from the Azure side.
Azure Side: You need to create an ExpressRoute Gateway. This is a specific type of Virtual Network Gateway designed for ExpressRoute connections. It's the Azure-side endpoint for the dedicated connection.
Connecting the two: You use the service key provided by Oracle during the ExpressRoute Gateway configuration to link it to the FastConnect virtual circuit. This establishes the physical connection between the two cloud environments.
Why the other options are incorrect:
a) Create an ExpressRoute circuit and configure a private peering. While you do create an ExpressRoute circuit, simply creating it isn't enough to connect to the OCI FastConnect. You need the ExpressRoute Gateway to terminate the connection and the service key to authorize it. The private peering is configured after the connection is established.
b) Establish an IPsec VPN tunnel between the Azure VNet and the OCI VCN. Oracle Interconnect for Azure uses a dedicated, private connection, not a VPN over the public internet.
c) Configure a Network Virtual Appliance (NVA) for routing between the two cloud environments. While NVAs can be used for advanced routing or security functions, they are not required for the basic establishment of the Interconnect. The direct connection through ExpressRoute and FastConnect handles the basic routing.
NEW QUESTION # 36
Which of the following actions requires coordination with Oracle support when working with Oracle Database@Google Cloud?
Answer: A
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 # 37
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