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Oracle 1z0-1084-22 Exam Syllabus Topics:

Topic	Details
Topic 1	Utilize OCI Monitoring service to view metrics Explain the fundamentals of cloud native and discuss the key pillars of cloud native development
Topic 2	Create integration between systems using OCI streaming service Explain the microservices architecture and discuss the design methodology of microservices
Topic 3	Create API gateways to process traffic from API clients and route it to back-end services Leveraging Serverless Technologies for Cloud Native Development
Topic 4	Build event-driven serverless applications using OCI event service Explain DevOps and discuss the role of container orchestration
Topic 5	Explain cloud native testing and discuss measures for testing cloud native applications Develop Serverless Application with Oracle Functions

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Oracle Cloud Infrastructure 2022 Developer Professional Sample Questions (Q35-Q40):

NEW QUESTION # 35
You are developing a serverless application with Oracle Functions and Oracle Cloud Infrastructure Object Storage- Your function needs to read a JSON file object from an Object Storage bucket named "input-bucket" in compartment "qa-compartment". Your corporate security standards mandate the use of Resource Principals for this use case.
Which two statements are needed to implement this use case?

• A. No policies are needed. By default, every function has read access to Object Storage buckets in the tenancy
• B. Set up a policy to grant your user account read access to the bucket:
  allow user XYZ to read objects in compartment qa-compartment where target .bucket, name-'input-bucket'
• C. Set up the following dynamic group for your function's OCID: Name: read-file-dg Rule: resource . id = ' ocid1. f nf unc. ocl -phx. aaaaaaaakeaobctakezj z5i4uj j 7g25q7sx5mvr55pms6f 4da !
• *D. Set up a policy with the following statement to grant read access to the bucket:
  allow dynamic-group read-file-dg to read objects in compartment qa-compartment where target .bucket .name=' input-bucket **
• E. Set up a policy to grant all functions read access to the bucket:
  allow all functions in compartment qa-compartment to read objects in target.bucket.name='input-bucket'

Answer: C,D Explanation:
When a function you've deployed to Oracle Functions is running, it can access other Oracle Cloud Infrastructure resources. For example:
- You might want a function to get a list of VCNs from the Networking service.
- You might want a function to read data from an Object Storage bucket, perform some operation on the data, and then write the modified data back to the Object Storage bucket.
To enable a function to access another Oracle Cloud Infrastructure resource, you have to include the function in a dynamic group, and then create a policy to grant the dynamic group access to that resource.
https://docs.cloud.oracle.com/en-us/iaas/Content/Functions/Tasks/functionsaccessingociresources.htm
NEW QUESTION # 36
Which statement accurately describes Oracle Cloud Infrastructure (OCI) Load Balancer integration with OCI Container Engine for Kubernetes (OKE)?

• A. OCI Load Balancer instance must be manually provisioned for each Kubernetes service that requires traffic balancing.
• B. OKE service provisions an OCI Load Balancer instance for each Kubernetes service with LoadBalancer type in the YAML configuration.
• C. OKE service provisions a single OCI Load Balancer instance shared with all the Kubernetes services with LoadBalancer type in the YAML configuration.
• D. OCI Load Balancer instance provisioning is triggered by OCI Events service for each Kubernetes service with LoadBalancer type in the YAML configuration.

Answer: C Explanation:
If you are running your Kubernetes cluster on Oracle Container Engine for Kubernetes (commonly known as OKE), you can have OCI automatically provision load balancers for you by creating a Service of type LoadBalancer instead of (or in addition to) installing an ingress controller like Traefik or Voyage YAML file

When you apply this YAML file to your cluster, you will see the new service is created. After a short time (typically less than a minute) the OCI Load Balancer will be provisioned.

https://oracle.github.io/weblogic-kubernetes-operator/faq/oci-lb/
NEW QUESTION # 37
A service you are deploying to Oracle infrastructure (OCI) Container En9ine for Kubernetes (OKE) uses a docker image from a private repository Which configuration is necessary to provide access to this repository from OKE?

• A. Create a docker-registry secret for OCIR with API key credentials on the cluster, and specify the imagepullsecret property in the application deployment manifest.
• B. Create a dynamic group for nodes in the cluster, and a policy that allows the dynamic group to read repositories in the same compartment.
• C. Create a docker-registry secret for OCIR with identity Auth Token on the cluster, and specify the image pull secret property in the application deployment manifest.
• D. Add a generic secret on the cluster containing your identity credentials. Then specify a registrycredentials property in the deployment manifest.

Answer: C Explanation:
Pulling Images from Registry during Deployment
During the deployment of an application to a Kubernetes cluster, you'll typically want one or more images to be pulled from a Docker registry. In the application's manifest file you specify the images to pull, the registry to pull them from, and the credentials to use when pulling the images. The manifest file is commonly also referred to as a pod spec, or as a deployment.yaml file (although other filenames are allowed).
If you want the application to pull images that reside in Oracle Cloud Infrastructure Registry, you have to perform two steps:
- You have to use kubectl to create a Docker registry secret. The secret contains the Oracle Cloud Infrastructure credentials to use when pulling the image. When creating secrets, Oracle strongly recommends you use the latest version of kubectl To create a Docker registry secret:
1- If you haven't already done so, follow the steps to set up the cluster's kubeconfig configuration file and (if necessary) set the KUBECONFIG environment variable to point to the file. Note that you must set up your own kubeconfig file. You cannot access a cluster using a kubeconfig file that a different user set up.
2- In a terminal window, enter:
$ kubectl create secret docker-registry <secret-name> --docker-server=<region-key>.ocir.io --docker-username='<tenancy-namespace>/<oci-username>' --docker-password='<oci-auth-token>' --docker-email='<email-address>' where:
<secret-name> is a name of your choice, that you will use in the manifest file to refer to the secret . For example, ocirsecret
<region-key> is the key for the Oracle Cloud Infrastructure Registry region you're using. For example, iad. See Availability by Region.
ocir.io is the Oracle Cloud Infrastructure Registry name.
<tenancy-namespace> is the auto-generated Object Storage namespace string of the tenancy containing the repository from which the application is to pull the image (as shown on the Tenancy Information page). For example, the namespace of the acme-dev tenancy might be ansh81vru1zp. Note that for some older tenancies, the namespace string might be the same as the tenancy name in all lower-case letters (for example, acme-dev).
<oci-username> is the username to use when pulling the image. The username must have access to the tenancy specified by <tenancy-name>. For example, [email protected] . If your tenancy is federated with Oracle Identity Cloud Service, use the format oracleidentitycloudservice/<username>
<oci-auth-token> is the auth token of the user specified by <oci-username>. For example, k]j64r{1sJSSF-;)K8
<email-address> is an email address. An email address is required, but it doesn't matter what you specify. For example, [email protected]
- You have to specify the image to pull from Oracle Cloud Infrastructure Registry, including the repository location and the Docker registry secret to use, in the application's manifest file.
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/Registry/Tasks/registrypullingimagesfromocir.htm
NEW QUESTION # 38
In the sample Kubernetes manifest file below, what annotations should you add to create a private load balancer In oracle Cloud infrastructure Container Engine for Kubermetes?

A)

B)

C)

D)

• A. Option C
• B. Option D
• C. Option B
• D. Option A

Answer: B Explanation:
https://docs.cloud.oracle.com/en-us/iaas/Content/ContEng/Tasks/contengcreatingloadbalancer.htm?TocPath=Services%7CExample%20Network%20Resource%20Configuration%7CUpgrading%20the%20Version%20of%20Kubernetes%20Running%20on%20a%20Master%20Node%7C_____2 Creating Internal Load Balancers in Public and Private Subnets You can create Oracle Cloud Infrastructure load balancers to control access to services running on a cluster:
When you create a 'custom' cluster, you select an existing VCN that contains the network resources to be used by the new cluster. If you want to use load balancers to control traffic into the VCN, you select existing public or private subnets in that VCN to host the load balancers.
When you create a 'quick cluster', the VCN that's automatically created contains a public regional subnet to host a load balancer. If you want to host load balancers in private subnets, you can add private subnets to the VCN later.
Alternatively, you can create an internal load balancer service in a cluster to enable other programs running in the same VCN as the cluster to access services in the cluster. You can host internal load balancers in public subnets and private subnets.
To create an internal load balancer hosted on a public subnet, add the following annotation in the metadata section of the manifest file:
service.beta.kubernetes.io/oci-load-balancer-internal: "true"
To create an internal load balancer hosted on a private subnet, add both following annotations in the metadata section of the manifest file:
service.beta.kubernetes.io/oci-load-balancer-internal: "true"
service.beta.kubernetes.io/oci-load-balancer-subnet1: "ocid1.subnet.oc1..aaaaaa....vdfw" where ocid1.subnet.oc1..aaaaaa....vdfw is the OCID of the private subnet.
NEW QUESTION # 39
You are working on a cloud native e-commerce application on Oracle Cloud Infrastructure (OCI). Your application architecture has multiple OCI services, including Oracle Functions. You need to trigger these functions directly from other OCI services, without having to run custom code.
Which OCI service cannot trigger your functions directly?

• A. OCI Registry
• B. Oracle Integration
• C. OCI Events Service
• D. OCI API Gateway

Answer: A Explanation:
Overview of Functions:
Oracle Functions is a fully managed, multi-tenant, highly scalable, on-demand, Functions-as-a-Service platform. It is built on enterprise-grade Oracle Cloud Infrastructure and powered by the Fn Project open source engine. Use Oracle Functions (sometimes abbreviated to just Functions) when you want to focus on writing code to meet business needs.
The serverless and elastic architecture of Oracle Functions means there's no infrastructure administration or software administration for you to perform. You don't provision or maintain compute instances, and operating system software patches and upgrades are applied automatically. Oracle Functions simply ensures your app is highly-available, scalable, secure, and monitored. With Oracle Functions, you can write code in Java, Python, Node, Go, and Ruby (and for advanced use cases, bring your own Dockerfile, and Graal VM).
You can invoke a function that you've deployed to Oracle Functions from:
- The Fn Project CLI.
- The Oracle Cloud Infrastructure SDKs.
- Signed HTTP requests to the function's invoke endpoint. Every function has an invoke endpoint.
- Other Oracle Cloud services (for example, triggered by an event in the Events service) or from external services.
so You can then deploy your code, call it directly or trigger it in response to events, and get billed only for the resources consumed during the execution.
Invoking Oracle Functions from Other Oracle Cloud Infrastructure Services:
You can invoke functions in Oracle Functions from other Oracle Cloud Infrastructure services. Typically, you'll want an event in another service to trigger a request to invoke a function defined in Oracle Functions.
This functionality is currently available in:
1. The Events service. For more information, see Overview of Events.
2.The Notifications service. For more information, see Notifications Overview. For a scenario, see Scenario A: Automatically Resize VMs.
3.The API Gateway service. For more information, see Adding a Function in Oracle Functions as an API Gateway Back End.
4.The Oracle Integration service, using the OCI Signature Version 1 security policy. For more information, see Configure Oracle Integration to Call Oracle Cloud Infrastructure Functions with the REST Adapter in Using the REST Adapter with Oracle Integration.

so OCI Registry services cannot trigger your functions directly
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/Functions/Tasks/functionsintegratingwithother.htm
https://docs.cloud.oracle.com/en-us/iaas/Content/Functions/Concepts/functionsoverview.htm
https://blogs.oracle.com/cloud-infrastructure/announcing-notifications-triggers-for-serverless-functions
NEW QUESTION # 40
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