2024 Realistic Verified 1z0-1084-23 exam dumps Q&As – 1z0-1084-23 Free Update [Q40-Q57]

1z0-1084-23 Oracle

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April 8, 2024

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2024 Realistic Verified 1z0-1084-23 exam dumps Q&As – 1z0-1084-23 Free Update

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QUESTION 40
Which concept in OCI Queue is responsible for hiding a message from other consumers for a predefined amount of time after it has been delivered to a consumer?

Maximum retention period

Visibility timeout

Delivery count

Polling timeout

QUESTION 41
Which is ONE of the differences between a microservice and a serverless function?

Microservices are used for long running operations while serverless functions are used for short running operations.

Microservices are triggered by events while serverless functions are not.

Microservices are stateless while serverless functions are stateful.

Microservices always use a data store while serverless functions never use a data store.

QUESTION 42
A service you are deploying to Oracle Cloud Infrastructure (OCI) Container Engine for Kubernetes (OKE) uses a docker image from a private repository in OCI Registry (OCIR). Which configuration is necessary to provide access to this repository from OKE?

Create a docker-registry secret for OCIR with API key credentials on the cluster, and specify the imagePullSecret property in the application deployment manifest.

Create a docker-registry secret for OCIR with identity Auth Token on the cluster, and specify the imagePullSecret property in the application deployment manifest.

Create a dynamic group for nodes in the cluster, and a policy that allows the dynamic group to read repositories in the same compartment.

Add a generic secret on the cluster containing your identity credentials. Then specify a registryCredentials property in the deployment manifest.

QUESTION 43
A DevOps engineer is troubleshooting the Meshifyd application, which is running in an Oracle Cloud Infrastructure (OCI) environment. The engineer has set up the OCI Logging service to store access logs for the application but notices that the logs from the Meshifyd application are not showing up in the logging service.
The engineer suspects that there might be an issue with the logging configuration. Which two statements are potential reasons for logs from the Meshifyd application not showing up in the OCI Logging service?

The logconfig.json file has incorrect or missing OCID for the custom log in the logobjectId field.

The OCI Logging service is set up to pre access logs by creating a log group and custom log within the same compartment.

The logconfig.json file has incorrect or missing OCID for the custom log group in the logGroupObjectId field.

The logconfig.json file has incorrect or missing information in the application namespace in the src field.

The logconfig.json file has incorrect or missing information in the application namespace in the paths field.

QUESTION 44
Which of the following is NOT a criterion that is usually met by a microservice?

Tightly coupled

Highly maintainable

Independently deployable

Organized around business capabilities.

QUESTION 45
You have a containerized application that requires access to an Autonomous Transaction Processing (ATP) Database. Which option is NOT valid when the container is deployed in an OKE cluster? (Choose the best answer.)

Use Kubernetes secrets to configure environment variables on the container with ATP instance OCID, and OCI API credentials. Then use the CreateConnection API endpoint from the service runtime.

Create a Kubernetes secret with contents from the instance Wallet files. Use this secret to create a volume mounted to the appropriate path in the application deployment manifest.

Install the Oracle Cloud Infrastructure Service Broker on the Kubernetes cluster and deploy ServiceInstance and ServiceBinding resources for ATP. Then use the specified binding name as a volume in the application deployment manifest.

Enable Oracle REST Data Services for the required schemas and connect via HTTPS.

Explanation
The option that is not valid for connecting to an Autonomous Transaction Processing (ATP) Database from a container in Kubernetes is: Install the Oracle Cloud Infrastructure Service Broker on the Kubernetes cluster and deploy ServiceInstance and ServiceBinding resources for ATP. Then use the specified binding name as a volume in the application deployment manifest. The Oracle Cloud Infrastructure Service Broker is not used for connecting to an ATP Database from a container in Kubernetes. The Service Broker is used for provisioning and managing cloud services directly from Kubernetes. It allows you to create and manage instances of OCI services using Kubernetesresources like ServiceInstance and ServiceBinding. To connect to an ATP Database from a container in Kubernetes, you can use one of the following valid options: Enable Oracle REST Data Services for the required schemas and connect via HTTPS. This involves enabling and configuring Oracle REST Data Services (ORDS) for the schemas in the ATP Database. You can then connect to the ATP Database using RESTful endpoints provided by ORDS. Use Kubernetes secrets to configure environment variables on the container with ATP instance OCID and OCI API credentials. Then use the CreateConnection API endpoint from the service runtime. This approach involves configuring the necessary environment variables on the container to provide the ATP instance OCID and OCI API credentials. The application can then use the OCI SDK or REST API (such as the CreateConnection endpoint) to establish a connection to the ATP Database. Create a Kubernetes secret with contents from the instance Wallet files. Use this secret to create a volume mounted to the appropriate path in the application deployment manifest. This method involves creating a Kubernetes secret that contains the necessary credentials from the ATP Database’s instance wallet files. The secret can then be mounted as a volume in the application deployment, allowing the application to access the required credentials for connecting to the ATP Database. Both options 1 and 3 provide valid approaches for connecting to an ATP Database from a container in Kubernetes, depending on the specific requirements and preferences of the application.

QUESTION 46
Which TWO statements are correct regarding Docker images and containers? (Choose two.)

An image is a collection of immutable layers whereas a container is a running instance of an image.

A container can exist without an image but an image cannot exist without a container.

Only one container can be spawned from a given image at a time.

Writing and building a new Dockerfile is the only way you can create new Docker images.

If multiple containers are spawned from the same image, then they all use the same copy of that image in memory.

Explanation
Which TWO statements are correct regarding Docker images and containers? (Choose two.) Writing and building a new Dockerfile is the only way you can create new Docker images. A container can exist without an image but an image cannot exist without a container. Only one container can be spawned from a given image at a time. If multiple containers are spawned from the same image, then they all use the same copy of that image in memory. (Correct) An image is a collection of immutable layers whereas a container is a running instance of an image. (Correct) ChatGPT The correct statements regarding Docker images and containers are:
If multiple containers are spawned from the same image, then they all use the same copy of that image in memory. This statement is correct. When multiple containers are created from the same Docker image, they share the underlying layers of the image in memory. Each container has its own isolated filesystem and runtime environment, but they all use the same base image, which helps in efficient resource utilization. An image is a collection of immutable layers whereas a container is a running instance of an image. This statement is also correct. Docker images are composed of multiple layers, with each layer representing a specific change or addition to the previous layer. These layers are read-only and can be shared among multiple containers. On the other hand, a container is a lightweight and isolated runtime instance created from a specific image. It is a running process that has its own filesystem, network, and runtime configuration. The statements
“Writing and building a new Dockerfile is the only way you can create new Docker images” and “A container can exist without an image but an image cannot exist without a container” are incorrect. Docker images can be created in various ways, including using Dockerfiles, importing from existing images, or pulling from registries. Additionally, a container requires an image to run, so an image must exist before a container can be created from it.

QUESTION 47
You plan to implement logging in your services that will run in Oracle Cloud Infrastructure (OCI) Container Engine for Kubernetes (OKE). Which statement describes the appropriate logging approach?

All services log to standard output only.

Each service logs to its own log file.

All services log to an external logging system.

All serviceAAs log to a shared log file.

QUESTION 48
Which TWO statements are true for serverless computing and serverless architectures? (Choose two.)

Serverless function execution is fully managed by third party.

Serverless function state should never be stored externally.

Application DevOps team is responsible for scaling.

Applications running on a FaaS (Functions as a Service) platform.

Long running tasks are perfectly suited for serverless.

QUESTION 49
Which statement accurately describes the Oracle Cloud Infrastructure (OCI) Load Balancer integration with OCI Container Engine for Kubernetes (OKE)?

OCI Load Balancer instance provisioning is triggered by the OCI Events service for each Kubernetes service with LoadBalancer type in the YAML configuration.

OCI Load Balancer instance must be manually provisioned for each Kubernetes service that requires traffic balancing.

OKE service provisions a single OCI Load Balancer instance shared with all the Kubernetes services with LoadBalancer type in the YAML configuration.

OKE service provisions an OCI Load Balancer instance for each Kubernetes service with LoadBalancer type in the YAML configuration.

QUESTION 50
Which of the following is defined as a configurable, low-latency infrastructure layer that controls the interaction between a network of microservices? (Choose the best answer.)

Containers

Kubernetes

CI/CD Pipelines

DevOps

Service Mesh

QUESTION 51
(CHK_4>2) Which TWO statements are NOT valid regarding the Oracle Cloud Infrastructure (OCI) Streaming service? (Choose two.)

OCI Streaming stores all data for 24 hours by default, but that can be extended up to 7 days.B

Although OCI Streaming automatically encrypts all data while in transit, it is the developer’s responsibility to encrypt data at rest, if needed.

The throughput of a stream is defined by a partition. A partition provides 1 MB/sec data input and 2 MB/sec data output.

A stream can be configured with either a public or a private endpoint with support for customer managed encryption keys.

OCI Streaming can support up to 2,000 requests per second to each partition.

QUESTION 52
What can you use to dynamically make Kubernetes resources discoverable to public DNS servers? (Choose the best answer.)

kubeDNS

DynDNS

CoreDNS

ExternalDNS

QUESTION 53
You have just finished building and compiling the software required to implement the API microservice component. You need to rebuild the API docker image, and plan to tag it as: ocIdevops/api:latest Which docker command would re-create the API docker image?

docker build -t OCIdevops/api:latest

docker create -t OCIdevops/api:latest

docker image -t OCIdevops/api:latest

docker compile -t OCI devops/api:latest

QUESTION 54
Which TWO are characteristics of microservices? (Choose two.)

Microservices communicate over lightweight APIs.

Microservices can be implemented in limited number of programming languages.

All microservices share a data store.

Microservices are hard to test in isolation.

Microservices can be independently deployed.

QUESTION 55
Which TWO are required to access the Oracle Cloud Infrastructure (OCI) Container Engine for Kubernetes (OKE) cluster from the kubectl CLI? (Choose two.)

Install and configure the OCI CLI.

OCI Identity and Access Management (IAM) Auth Token.

Tiller enabled on the OKE cluster.

An SSH key pair with the public key added to the cluster worker nodes.

A configured OCI API signing key pair.

QUESTION 56
What are the TWO main reasons you would choose to implement a serverless architecture? (Choose two.)

Easier to run long-running operations

Improved in-function state management

Reduced operational cost

Automatic horizontal scaling

No need for integration testing

QUESTION 57
You encounter an unexpected error when invoking Oracle Functions from your Cloud Shell session named myfunction in the myapp application. Which option will get you more information on the error?

fn –verbose invoke myapp myfunction

fn –debug invoke myapp myfunction

Contact Oracle support with your error message

DEBUG=1 fn invoke myapp myfunction

Oracle 1z0-1084-23 Exam Syllabus Topics:

Topic	Details
Topic 1	Develop Serverless Applications with Oracle Functions Explain the fundamentals of cloud-native and discuss the key pillars of cloud-native development
Topic 2	Leverage OCI Service Mesh for Kubernetes Deployment Explain the microservices architecture and discuss the design methodology of microservices
Topic 3	Use OCIR to pull and push container images Apply security measures to overcome challenges with cloud-native development
Topic 4	Facilitate asynchronous messaging for microservices with OCI Queue Leveraging Serverless Technologies for Cloud Native Development
Topic 5	Discuss the role of container orchestration Discuss various strategies for testing cloud-native applications
Topic 6	Explain docker and the concepts around its architecture and components Perform Tasks around Monitoring, Logging, and Tracing