Free Oracle 1Z0-997-23 Exam Actual Questions

The questions for 1Z0-997-23 were last updated On Nov 4, 2024

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Question No. 1

A company runs a public-facing application that uses a Java-based web service via a

RESTful API in their on-premises data center. Use of the API is expected to double with a new

product launch. The business wants to migrate their application to Oracle Cloud Infrastructure

(OCI) to meet the scale and reliability requirements. In order to achieve this, they will divert only

40% of the traffic to the new Apache Tomcat web servers running on OCI and serve the

remaining 60% traffic through their on-premises infrastructure. Once the migration is complete

and application works fine, they will divert all traffic to OCI.

How can these requirements be met with the LEAST amount of effort?

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Correct Answer: B

Option A is incorrect because using OCI Traffic management service with failover steering policy will not distribute the traffic between OCI and on premises infrastructure.Failover steering policy will only route traffic to a secondary endpoint if the primary endpoint is unresponsive2. This is not suitable for a gradual migration scenario.

Option B is correct because using OCI Traffic management service with Load Balancing steering policy will distribute the traffic between OCI and on premises infrastructure based on a ratio or round robin algorithm2. This will allow you to control the percentage of traffic that goes to the new infrastructure in OCI and monitor the results.

Option C is incorrect because using an OCI load Balancer will not distribute the traffic between OCI and on premises infrastructure.A load balancer will only distribute the traffic among multiple compute instances within a single region in OCI2. This will not help you migrate from your on premises infrastructure.

Option D is incorrect because using VPN connectivity between on premises Infrastructure and OCI and creating routing tables to distribute the traffic between them will require more effort than using OCI Traffic management service.You will need to set up a VPN connection, configure routing rules, and monitor the network performance2. This will not be as simple and reliable as using a DNS-based solution.


Question No. 2

Challenge 2 - Task 2 of 5

Deploy a Serverless Function and Access Using an API Gateway

Deployment in OCI

Scenario

You have joined ACME as their new Cloud Solutions Architect. Your organization wants to verify if

they can execute their microservices deployed as serverless functions on another cloud provider

using Oracle Functions in OCI.

Preconfigured

To complete this requirement, you are provided with the following:

* Access to an OCI Tenancy, an assigned compartment, and OCI credentials.

* Access to Cloud Shell to execute the Fn CLI and Docker commands.

* Code for a sample Python function, ExamFunction-main.zip.

* Permissions to perform only the tasks within the challenge.

Note: Throughout your exam, ensure to use assigned Compartment 99248134-

C01and Region us-ashburn-1

Complete the following task:

In the field below, write an IAM policy statement that allows API Gateway to access Oracle Functions

in your compartment.

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Correct Answer: A

One possible IAM policy statement that allows API Gateway to access Oracle Functions in your compartment is:

ALLOW any-user to use functions-family in compartment <your-compartment-name> where ALL {request.principal.type = 'ApiGateway', request.resource.compartment.id = '<your-compartment-OCID>'}

This statement grants the any-user group the permission to use the functions-family resource type in the specified compartment, but only if the request is coming from an API Gateway and the function belongs to the same compartment as the API Gateway. For more information, see Create a Policy to Give API Gateways Access to Functions.


Question No. 3

Challenge 1

Implement Private DNS Names and Private DNS Resolver

Deploy a Serverless Function and Access Using an API Gateway

Deployment in OCI

Scenario

You have joined ACME as their new Cloud Solutions Architect. Your organization wants to verify if

they can execute their microservices deployed as serverless functions on another cloud provider

using Oracle Functions in OCI.

Preconfigured

To complete this requirement, you are provided with the following:

* Access to an OCI Tenancy, an assigned compartment, and OCI credentials.

* Access to Cloud Shell to execute the Fn CLI and Docker commands.

* Code for a sample Python function, ExamFunction-main.zip.

* Permissions to perform only the tasks within the challenge.

Note: Throughout your exam, ensure to use assigned Compartment99248134-

C01 and Region us-ashburn-1

Complete the following tasks in the provisioned OCI environment:

1. Create a new VCN with the name exam-vcn within your assigned compartment by using the

Start VCN Wizard.

2. Create a new Oracle Functions application named exam-app within your assigned

compartment by using the private subnet in your previously created VCN.

Ensure you use all defaults provided with the Create VCN with Internet Connectivity option.

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Correct Answer: A

Here are the steps to complete the challenge:

To create a new VCN with the name exam-vcn within your assigned compartment by using the Start VCN Wizard, follow these steps:

In the OCI Console, go to Networking and click Virtual Cloud Networks.

Select your assigned compartment from the list on the left.

Click Start VCN Wizard.

Select Create VCN with Internet Connectivity and click Start VCN Wizard.

Enter exam-vcn as the VCN Name and leave the other fields as default. Click Next.

Review the summary and click Create. This will create a VCN with a public subnet, a private subnet, an internet gateway, a NAT gateway, a service gateway, and a route table.

To create a new Oracle Functions application named exam-app within your assigned compartment by using the private subnet in your previously created VCN, follow these steps:

In the OCI Console, go to Developer Services and click Functions.

Select your assigned compartment from the list on the left.

Click Create Application.

Enter exam-app as the Application Name and select your previously created VCN from the VCN dropdown menu.

Select the private subnet from the Subnet dropdown menu and leave the other fields as default. Click Create. This will create an Oracle Functions application that can run serverless functions in a private subnet.


Question No. 4

You are running a mission-critical database application in Oracle Cloud Infrastructure (OCI).

You regular backups of your DB system to OCI Object Storage. Recently, you notice a failed

database back status in the console. * Ensure that the database is not active and running while

the backup is in progress.

What troubleshooting action can you perform to determine the cause of the backup failure?

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Correct Answer: C

Option A is incorrect because restarting the dcsagent program might be necessary if it has the status of stop/waiting to resolve a backup failure1. This is one of the possible database service agent issues that can cause backup failures.

Option B is incorrect because setting the database archiving mode to NOARCHIVELOG will prevent you from performing online backups.You need to set the database archiving mode to ARCHIVELOG to enable online backups1. This is one of the possible database issues that can cause backup failures.

Option C is correct because ensuring that your database host can connect to OCI Object Storage is essential for performing backups.You need to check the object store connectivity issues that can cause backup failures, such as firewall rules, proxy settings, network routes, and security lists1.


Question No. 5

Your company needs to migrate a business critical application from your data center to

Oracle Cloud Infrastructure (OCI). The application runs on Oracle * Deploy Virtual Machine RAC

DB system on OCI and use the Oracle Database Backup module with RMAN to migrate the

data from customer on-premises to OCI. The application server is WebLogic server running on

multiple 4-core servers and the database is deployed as an Oracle Database Enterprise Edition

RAC database on 2 servers (4-cores each). Which method of database migration should you

choose so that the application has minimal impact? (Choose the best answer.)

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Correct Answer: A

Option A is correct because deploying a Virtual Machine RAC DB system on OCI and using the ZDM tool for the database migration is a method that can minimize the impact on the application. ZDM is a software solution that allows you to directly and seamlessly migrate your on-premises Oracle Databases to the Oracle Cloud, whether in OCI or ExaCC.ZDM supports a wide range of Oracle Database versions, and ensures that there is minimal to no production downtime during the migration1.ZDM also supports migrating RAC databases to RAC databases on OCI2.

Option B is incorrect because deploying an Autonomous Transaction Processing Database on OCI and using the MV2ADB tool for the database migration is not a suitable method for this scenario. MV2ADB is a command-line tool that allows migrating data from an Oracle database on-premise to Oracle Autonomous Database in ''one-click''.It is based on Oracle Data Pump export and import utility3.However, MV2ADB does not support migrating RAC databases to Autonomous Database, nor does it support migrating Enterprise Edition databases to Autonomous Database4.

Option C is incorrect because deploying an Exadata Cloud Service Base rack and using Oracle Data Pump tool to migrate the data from customer on-premises to OCI is not a method that can minimize the impact on the application.Oracle Data Pump is a technology that enables you to move data and metadata from one database to another5. However, Oracle Data Pump requires intermediate storage for the dump files, which can add complexity and overhead. It also requires downtime during the export and import operations, which can affect the availability of the application.


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