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| Section | Weight | Objectives |
|---|---|---|
| Testing and Securing Cloud Native Applications | 13% | - Cloud Native Testing
|
| Monitoring and Troubleshooting Cloud Native Applications | 10% | - OCI Logging
|
| Cloud Native Fundamentals | 11% | - Cloud Native Principles
|
| Leveraging Serverless Technologies for Cloud Native Development | 33% | - OCI Events
|
| Cloud Native Applications and Containerization | 33% | - Docker and Containerization
|
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NEW QUESTION # 13
In the shared responsibility model, who should perform patching, upgrading, and maintaining of the worker nodes in provisioned Oracle Container Engine for Kubernetes (OKE) clusters?
Answer: B
Explanation:
In the shared responsibility model, Oracle is responsible for securing the underlying cloudinfrastructure and platform services, while customers are responsible for securing theirdata and applications within the cloud4. For provisioned OKE clusters, Oracle manages the control plane (master nodes) of the Kubernetes cluster, while customers manage the data plane (worker nodes) of the cluster5. Therefore, it is the responsibility of the customer to perform patching, upgrading, and maintaining of the worker nodes in provisioned OKE clusters5. Customers can use tools such as Terraform or kubectl to automate these tasks5.
NEW QUESTION # 14
Which token authentication policy configuration parameter should be defined when adjusting for potential clock synchronization differences between the external OAuth2 identity provider and the OCI API Gateway?
Answer: D
Explanation:
maxClockSkewInSeconds specifies the maximum expected difference between the system clock of the token issuer and the OCI API Gateway. Oracle documents this value as part of token/JWT authentication policy configuration. The gateway accounts for the configured skew when evaluating time-dependent JWT claims such as nbf (not before) and exp (expiration), preventing otherwise valid tokens from being rejected because of minor clock differences between systems. Oracle currently documents a valid range from 0 through 120 seconds for the JWT policy. maxCacheDurationInHours controls caching behavior rather than clock synchronization, while SSL verification relates to certificate validation. allowedClockVariance is not the documented OCI API Gateway property. Therefore, B is the correct configuration parameter.
NEW QUESTION # 15
Which TWO statements are correct regarding Docker images and containers? (Choose two.)
Answer: B,D
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.
NEW QUESTION # 16
You have built a custom container image for your microservice and successfully pushed it to Oracle Cloud Infrastructure Registry (OCIR). Which OCI CLI command should you run to cryptographically sign the pushed image using a master encryption key managed in OCI Vault and upload the resulting signature?
Answer: D
Explanation:
Oracle explicitly documents oci artifacts container image-signature sign-upload for signing a Container Registry image and uploading its image signature. The operation requires the image OCID, compartment OCID, Vault master encryption key OCID, key-version OCID, and an approved RSA signing algorithm such as SHA_256_RSA_PKCS_PSS. Container Registry image-management commands are organized under the OCI CLI artifacts container command group, which is why the other command paths are invalid. container- engine relates to OKE rather than image-signature creation, and there is no container-registry image-signature top-level CLI group. Oracle ' s Container Registry documentation provides the exact command shown in option B for signing an already-pushed image using a key stored in OCI Vault.
NEW QUESTION # 17
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?
Answer: B
Explanation:
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.
NEW QUESTION # 18
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