Oracle 1z0-1084-26 PDF Demo, 1z0-1084-26 Zertifizierungsantworten

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Oracle 1z0-1084-26 Exam Syllabus Topics:

Section	Weight	Objectives
Monitoring & Troubleshooting Cloud Native Applications	10%	- Application performance monitoring and tracing - Troubleshooting containerized and serverless workloads - Centralized logging and metrics collection
Testing and Securing Cloud Native Applications	13%	- Application security best practices - Secrets management with OCI Vault - Testing strategies and secure deployment configurations
Cloud Native Fundamentals	11%	- DevOps concepts and CI/CD workflows - OCI developer services and tools overview - Cloud-native principles and microservices architecture
Cloud Native Applications and Containerization	33%	- Building containerized applications with Docker - Oracle Container Registry (OCIR) usage - Deployment and management with Oracle Kubernetes Engine (OKE)
Leveraging Serverless Technologies for Cloud Native Development	33%	- Oracle Functions development and management - API-driven architectures using API Gateway - Event-driven architecture with OCI Events, Streaming, and Queue

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1z0-1084-26 Musterprüfungsfragen - 1z0-1084-26Zertifizierung & 1z0-1084-26Testfagen

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Oracle Cloud Infrastructure Developer Professional 1z0-1084-26 Prüfungsfragen mit Lösungen (Q124-Q129):

124. Frage
Which kubectl command syntax is valid for implementing a rolling update deployment strategy in Kubernetes? (Choose the best answer.)

A. kubectl rolling-update < deployment-name > --image=image:v2
B. kubectl update -c < container > --iniage=image: v2
C. kubectl upgrade -c < container > --image=image:v2
D. kubectl update < deployment-name > --image=image:v2

Antwort: A

Begründung:
The correct syntax for implementing a rolling update deployment strategy in Kubernetes using the kubectl command is: kubectl rolling-update < deployment-name > --image=image:v2 This command initiates a rolling update of the specified deployment by updating the container image to image:v2. The rolling update strategy ensures that the new version of the application is gradually deployed while maintaining availability and minimizing downtime.

125. Frage
Which statement is NOT valid regarding the structure and behavior of Docker images and containers?

A. Modifying an existing file within a running container copies the file from the read-only layer to the writable layer.
B. Running a Docker container adds a thin writable layer on top of the underlying read-only image layers.
C. Deleting a Docker container also permanently deletes the underlying image from the host system by default.
D. A Docker image is composed of a series of read-only layers that represent filesystem differences.

Antwort: C

Begründung:
Docker images and containers have separate lifecycles. Oracle describes a Docker image as a read-only template used to create containers, while image implementations consist of immutable read-only layers. A running container adds its own writable runtime state without changing those underlying image layers.
Removing a container with docker rm removes that container instance; deleting the corresponding image requires a separate image-removal operation such as docker rmi. Oracle ' s Cloud Shell documentation likewise explicitly uses docker rmi when deleting local images. Therefore, deleting a container doesnotautomatically or permanently delete its source image. Statements A, B, and D describe the layered and copy-on-write behavior associated with Docker containers, making C the invalid statement.

126. Frage
Your organization has deployed their e-commerce application on Oracle Container Engine for Kubernetes (OKE) and they are using the Oracle Cloud Infrastructure Registry (OCIR) service as their Docker image repository. They have deployed the OKE cluster using the ' custom create ' option, and their Virtual Cloud Network (VCN) has three public subnets with associated Route Tables, Security Lists, and Internet Gateway.
However, their application containers are failing to deploy. On investigation, they discover that the images are not being pulled from the designated OCIR repository, even though the YAML configuration has the correct path to the images. What is a valid concern here that needs to be further investigated?

A. Identity and Access Management (IAM) credentials need to be added for each user that deploys applications to the OKE cluster.
B. Security List rule for TCP port 22 needs to be added to connect to the OCIR service.
C. VCN hosting the OKE cluster worker nodes needs to have a NAT gateway to access OCIR repositories.
D. OKE cluster needs to have a secret with the credentials of their OCIR repository and use that secret in the Kubernetes deployment manifest.

Antwort: D

Begründung:
A valid concern that needs to be further investigated in this scenario is whether the OKE cluster has a secret with the credentials of the Oracle Cloud Infrastructure Registry (OCIR) repository and if that secret is being used in the Kubernetes deployment manifest. Here ' s why this concern is relevant: Access to the OCIR repository: In order for the OKE cluster to pull images from the OCIR repository, it needs proper authentication credentials. These credentials are typically provided in the form of a secret, which contains the necessary information to authenticate with the registry. Secret in the deployment manifest: The Kubernetes deployment manifest defines how the application containers should be deployed. It includes specifications such as the container image, resource requirements, and environment variables. To pull images from a private repository like OCIR, the deployment manifest needs to reference the appropriate secret that contains the registry credentials. If the images are not being pulled from the designated OCIR repository, it suggests that either the secret with the OCIR credentials is missing or it is not properly referenced in the deployment manifest. Further investigation should focus on verifying the presence and correctness of the secret, as well as confirming that it is correctly referenced in the deployment manifest for the application containers. By ensuring the presence of the secret and proper configuration in the deployment manifest, the OKE cluster will have the necessary credentials to access the OCIR repository and successfully deploy the application containers.

127. Frage
Which statement is NOT valid regarding pulling and pushing container images in Oracle Cloud Infrastructure Registry (OCIR)?

A. Container Registry is compliant with the Open Container Initiative (OCI) specification, allowing developers to use standard Docker CLI commands to push and pull images.
B. By default, executing a docker push command referencing a non-existent repository automatically creates a private repository in the user ' s home compartment.
C. Images stored in public repositories can be pulled by any client with internet access without requiring a previous docker login authentication.
D. To push a container image, you must tag the local image with a path that includes the registry ' s regional domain name and your tenancy ' s Object Storage namespace.

Antwort: B

Begründung:
Statement C is invalid. Oracle states that creating a repository before pushing is the normal workflow.
Automatic repository creation occurs only when the tenancy settingCreate repository on first push in root compartmentis enabled and the user has appropriate permissions. Even then, the new private repository is created in the tenancy ' sroot compartment, not a user ' s "home compartment." Oracle Container Registry is OCI-compliant and supports standard Docker commands. Public repositories can be pulled by anyone with internet access and the appropriate image URL without authenticating first. For pushing, Docker images are tagged using a registry path containing the regional registry domain, tenancy namespace, repository name, and version. The tenancy namespace is the automatically generated namespace associated with Object Storage. Therefore, C misstates both the default behavior and repository location.

128. Frage
Which statement is NOT valid regarding the comparison between cloud-native and cloud-based applications?

A. Cloud-native applications require manual host provisioning to scale their compute resources, whereas cloud-based applications scale automatically and dynamically by default.
B. Cloud-native applications utilize a microservices architecture to reduce the risk of downtime, whereas cloud-based applications are often more vulnerable to central failure points.
C. Cloud-native applications are built specifically for the cloud to minimize dependencies, whereas cloud- based applications are legacy systems modified to run in a cloud environment.
D. Cloud-native applications leverage pay-as-you-go pricing to optimize resource costs, whereas cloud- based applications can incur unnecessary expenses due to over-provisioning.

Antwort: A

Begründung:
Option C reverses a fundamental cloud-native characteristic. Oracle describes cloud-native applications as being designed for automated scale-up and scale-down in response to changing workload demand.
Technologies including containers, Kubernetes, serverless architectures, microservices, and automated DevOps processes are specifically intended to reduce manual infrastructure management. Oracle also identifies scalability, resilience, reduced operational overhead, and cost optimization through cloud consumption models as major cloud-native advantages. Applications migrated to cloud infrastructure without substantial architectural modernization can retain monolithic dependencies, fixed capacity assumptions, and manual provisioning practices. Therefore, claiming that cloud-native applications require manual host provisioning while cloud-based applications automatically scale by default is technically inverted. C is consequently the NOT valid statement among the available choices.

129. Frage
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