無料PDF1z0-1084-26受験対策解説集 |最初の試行で簡単に勉強して試験に合格する &信頼できるOracle Oracle Cloud Infrastructure Developer Professional

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Oracle 1z0-1084-26 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Cloud Native Fundamentals	11%	- Cloud Native Principles 1. Explain the fundamentals of cloud native and discuss the key pillars of cloud native development - Microservices Architecture 1. Explain the microservices architecture and discuss the design methodology of microservices
Topic 2: Monitoring & Troubleshooting Cloud Native Applications	10%	- Monitoring, Logging, and Tracing 1. Perform tasks around monitoring, logging, and tracing - OCI Monitoring 1. Utilize OCI Monitoring Service to view metrics - OCI Logging 1. Use OCI Logging Service to enable, manage, and search logs
Topic 3: Testing and Securing Cloud Native Applications	13%	- Cloud Native Security 1. Apply security measures to overcome challenges with cloud native development - Cloud Native Testing 1. Analyze and evaluate cloud native testing methodologies and develop effective strategies for testing cloud native applications - OCI Vault 1. Use OCI Vault to securely store and manage encryption keys and sensitive configuration information
Topic 4: Cloud Native Applications and Containerization	33%	- Oracle Kubernetes Engine 1. Develop and deploy containerized applications on Oracle Kubernetes Engine - OCI Registry 1. Use OCI Registry to pull and push container images - Container Orchestration 1. Discuss the role of container orchestration - Docker and Containerization 1. Explain Docker and the concepts around its architecture and components
Topic 5: Leveraging Serverless Technologies for Cloud Native Development	33%	- API Gateway 1. Create API gateways to process traffic from API clients and route it to back-end services - Oracle Functions 1. Develop serverless applications with Oracle Functions - OCI Streaming 1. Create integration between systems using OCI Streaming Service - OCI Queue 1. Facilitate asynchronous messaging for microservices with OCI Queue - OCI Events 1. Build event-driven serverless applications using OCI Events Service

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Oracle Cloud Infrastructure Developer Professional 認定 1z0-1084-26 試験問題 (Q99-Q104):

質問 # 99
You developed a microservices-based application that runs in an Oracle Cloud Infrastructure (OCI) Container Engine for Kubernetes (OKE) cluster. It has multiple endpoints that need to be exposed to the public internet.
What is the most cost-effective way to expose multiple application endpoints without adding unnecessary complexity to the application?

A. Create a separate load balancer instance for each service using the lowest 100 Mbps option.
B. Use a ClusterIP service type in Kubernetes for each of your service endpoints using a load balancer to expose the endpoints.
C. Deploy an Ingress Controller and use it to expose each endpoint with its own routing endpoint.
D. Use a NodePort service type in Kubernetes for each of your service endpoints using the node ' s public IP address to access the applications.

正解：C

解説：
An Ingress Controller is a Kubernetes resource that provides advanced routing and load balancing for your applications running on a Kubernetes cluster1. An Ingress Controller allows you to define rules that specify how to route traffic to different services in your cluster based on the host name or path of the incoming request1. By deploying an Ingress Controller and using it to expose multiple application endpoints, you can achieve the following benefits1:
* Cost-effectiveness: You only need to create one load balancer instance per cluster, instead of one per service, which reduces the cost of exposing your applications.
* Simplicity: You only need to manage one set of routing rules for all your services, instead of configuring each service separately, which simplifies the application deployment and maintenance.
* Flexibility: You can use different types of Ingress Controllers, such as NGINX or Traefik, that offer various features and customization options for your routing needs.

質問 # 100
You have been asked to update an OKE cluster to a network configuration that has the least attack surface while the deployed applications are still directly available for access from the Internet. Which is a valid OKE cluster network configuration that meets this requirement? (Choose the best answer.)

A. Private subnets for nodes, the Kubemetes API endpoint, and load balancers
B. Private subnets for nodes; public subnets for the Kubemetes API endpoint and load balancers
C. Private subnets for nodes and the Kubemetes API endpoint; public subnets for load balancers
D. Private subnet for the Kubemetes API endpoint; public subnets for nodes and load balancers

正解：C

解説：
The valid OKE cluster network configuration that meets the requirement of having the least attack surface while still allowing direct access to the deployed applications from the Internet is: Private subnets for nodes and the Kubernetes API endpoint; public subnets for load balancers. By placing the nodes and the Kubernetes API endpoint in private subnets, they are not directly accessible from the Internet, reducing the attack surface.
The load balancers, on the other hand, are placed in public subnets, allowing them to be accessed from the Internet and serve as the entry point for accessing the deployed applications. This configuration ensures that the critical components of the cluster, such as the nodes and the API endpoint, are protected within the private network, while still providing accessibility to the applications through the load balancers. It helps to enhance security by limiting direct access to the internal components of the cluster while maintaining the availability of the deployed applications.

質問 # 101
You are developing a continuous integration (CI) pipeline running on an Oracle Cloud Infrastructure (OCI) Compute instance that automatically builds and pushes container images to Container Registry (OCIR). You need to configure dynamic group membership and write the minimum required IAM policies to authorize this Compute instance to push images to repositories within a compartment named qa-compartment.
Which TWO steps must you perform to achieve this authorization?

A. Add an IAM policy statement: Allow dynamic-group ci-pipeline-dg to manage repos in compartment qa-compartment
B. Add an IAM policy statement: Allow dynamic-group ci-pipeline-dg to inspect repos in compartment qa- compartment
C. Create a dynamic group named ci-pipeline-dg with the matching rule: ANY {instance.id = ' ocid1.
instance.oc1.phx.exampleinstanceocid ' }
D. Add an IAM policy statement: Allow dynamic-group ci-pipeline-dg to use repos in compartment qa- compartment
E. Create a dynamic group named ci-pipeline-dg with the matching rule: ANY {container.instance = ' ocid1.instance.oc1.phx.exampleinstanceocid ' }

正解：A、C

解説：
OCI dynamic groups identify Compute instances using the documented instance.id attribute, making B valid.
Oracle Container Registry documentation also shows manage repos as a policy capable of authorizing image pushes within a specified compartment, making D the sufficient policy among the supplied choices. container.
instance is not a valid Compute-instance matching variable, while inspect repos provides only discovery-level permissions. use repos does not supply the repository update permissions required for pushing images. For stricter production least privilege, Oracle additionally documents conditioning a manage repos policy to specific permissions such as REPOSITORY_READ, REPOSITORY_UPDATE, and REPOSITORY_CREATE; however, that granular variant is not offered among these choices. Therefore, B and D are the correct selections.

質問 # 102
Which statement is NOT valid regarding OCI Identity and Access Management (IAM) policies written for OKE Workload Identity?

A. The policy statement must be scoped strictly at the tenancy level and cannot be written to restrict access to a specific compartment.
B. The policy condition must specify the Kubernetes namespace, service account name, and OKE cluster OCID.
C. The policy condition must explicitly define request.principal.type with the value set to workload.
D. The policy subject must be specified as any-user rather than a specific IAM group or dynamic group name.

正解：A

解説：
Oracle ' s documented OKE Workload Identity policy pattern is Allow any-user to < verb > < resource > in < location > where all {...} with conditions identifying request.principal.type= ' workload ' , the Kubernetes namespace, service account, and cluster OCID. Crucially, Oracle defines < location > as either the entire tenancyor a specific compartment. Oracle even provides examples granting a workload access only to resources in a named compartment. Consequently, C is false because workload-identity policies do not have to be tenancy-wide. Options A, B, and D accurately describe the standard policy structure: any-user is narrowed through workload-specific conditions, and those conditions identify the exact OKE workload by cluster, namespace, and service account. This enables fine-grained least-privilege access without storing OCI credentials inside pods.

質問 # 103
When creating an alarm query in the OCI Monitoring service, which MQL trigger rule evaluates the lack of incoming raw metric data points as the trigger criteria?

A. missing
B. non-zero
C. absence
D. threshold

正解：C

解説：
OCI Monitoring provides anabsencetrigger for alarms that must fire when a metric stops emitting data. Oracle
' s current documentation states that an absence alarm uses the MQL absent() statistic. It returns 1 when the metric is absent for the complete evaluation interval and 0 when data is present. An expression can therefore take the form CpuUtilization[1m].absent() or use groupBy() before absent() when separate dimensional streams must be evaluated. A threshold trigger, by contrast, evaluates numeric metric values against limits such as greater than 90 percent. missing and non-zero are not OCI Monitoring trigger-rule names for the required behavior. Thus, the correct trigger rule for detecting a lack of incoming metric data is absence.

質問 # 104
......

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