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Oracle 1z0-1084-26 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Cloud Native Applications and Containerization	33%	- Docker and Containerization 1. Containerization concepts 2. Docker architecture and components - Container Orchestration 1. Deploy containerized applications on Oracle Kubernetes Engine 2. Role of container orchestration - Oracle Cloud Infrastructure Registry 1. Pull container images from OCIR 2. Push container images to OCIR
Topic 2: Monitoring and Troubleshooting Cloud Native Applications	10%	- OCI Logging 1. Enable and manage logs 2. Search and analyze logs - OCI Monitoring 1. Use OCI Monitoring to view metrics - Monitoring, Logging, and Tracing 1. Perform monitoring, logging, and tracing tasks 2. Troubleshoot cloud native applications
Topic 3: Leveraging Serverless Technologies for Cloud Native Development	33%	- OCI Events 1. Build event-driven serverless applications - OCI Queue 1. Implement asynchronous messaging for microservices - Oracle Functions 1. Develop serverless applications with Oracle Functions - OCI Streaming 1. Integrate systems using OCI Streaming 2. Use streaming for serverless and managed application architectures - API Gateway 1. Process traffic from API clients 2. Route API traffic to backend services
Topic 4: Testing and Securing Cloud Native Applications	13%	- Cloud Native Testing 1. Testing strategies for cloud native applications 2. Cloud native testing methodologies - Cloud Native Security 1. Manage sensitive configuration information 2. Use OCI Vault to securely manage encryption keys 3. Apply security measures for cloud native development
Topic 5: Cloud Native Fundamentals	11%	- Cloud Native Principles 1. Fundamentals of cloud native development 2. Key pillars of cloud native development - Microservices Architecture 1. Microservices architecture 2. Microservices design methodology

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1z0-1084-26 Prüfungsinformationen & 1z0-1084-26 Prüfungsvorbereitung

Oracle Cloud Infrastructure Developer Professional 1z0-1084-26 Prüfungsfragen mit Lösungen (Q56-Q61):

56. Frage
You are designing the persistence layer for a multi-service financial application where each microservice must completely isolate its private persistent data to enforce a bounded context. Which database configuration strategy should you implement within a multi-tenant Oracle Database to satisfy this requirement with the lowest operational overhead?

A. Create a single container database (CDB) with shared tables for all microservices.
B. Assign a dedicated virtual machine DB system to each individual microservice.
C. Deploy a shared database schema with row-level security for all microservices.
D. Provision a single pluggable database (PDB) for each individual microservice.

Antwort: D

Begründung:
Oracle specifically recommends the multitenant database model for microservices because multiple Pluggable Databases can reside within one Container Database while retaining logical isolation. Oracle ' s microservices architecture guidance identifies PDBs as a strong persistence choice forbounded-context isolation, security, and high availability. Allocating a PDB per microservice isolates that service ' s private database objects while avoiding the infrastructure and operational overhead of provisioning an entire VM database system for every service. Shared schemas or shared tables weaken service autonomy and create tight coupling between bounded contexts. Because a CDB can host multiple isolated PDBs while sharing common database infrastructure and administration, option B best combines isolation with operational efficiency.

57. Frage
You need to push a new Docker container image to a repository in the Oracle Cloud Infrastructure (OCI) Registry. Which mechanism must you use to provide authentication?

A. Generate an Auth Token to complete the authentication via the OCI CLI.
B. Generate an API signing key to complete the authentication via the Docker CLI.
C. Generate an API signing key to complete the authentication via the OCI CLI.
D. Generate an Auth Token to complete the authentication via the Docker CLI.

Antwort: D

Begründung:
To push a new Docker container image to a repository in OCI Registry, you need to use an Auth Token to complete the authentication via the Docker CLI1. An Auth Token is a secure, auto-generated password that you can use to authenticate with OCI services such as OCI Registry1. You can generate an Auth Token in the Console by following these steps1:
* In the top-right corner of the Console, open the Profile menu and then click User settings to view the details.
* On the Auth Tokens page, click Generate Token.
* Enter a friendly description for the auth token. Avoid entering confidential information.
* Click Generate Token. The new auth token is displayed.
* Copy the auth token immediately to a secure location from where you can retrieve it later, because you won't see the auth token again in the Console.
* Close the Generate Token dialog. After generating an Auth Token, you need to log in to OCI Registry by entering docker login < region-key > .ocir.io in a terminal window on the client machine running Docker, where < region-key > corresponds to the key for the OCI Registry region you're using1. When prompted for a username, enter your username in the format < tenancy-namespace > / < username > , where < tenancy-namespace > is the auto-generated Object Storage namespace string of your tenancy1. When prompted for a password, enter the Auth Token you copied earlier1.

58. Frage
You are deploying a containerized database application on a host using the standard Docker engine. To prevent data loss when the container instance is destroyed or updated, you must configure a storage mechanism that isolates application data from the volatile container layer and guarantees persistence. Which TWO statements or approaches correctly describe Docker storage components that satisfy this requirement?

A. Configure the temporary filesystem mount, which persists database writes directly into the host memory even if the container is terminated.
B. Use Docker volumes, which are stored in a host directory fully managed by the Docker engine and protected from external host process modification.
C. Utilize the default container writable layer, which automatically persists database writes to the host root disk after the container is removed.
D. Rely on the Docker image layer cache, which commits all runtime transactional database updates back to the read-only parent image.
E. Use Docker bind mounts, which map a specific arbitrary path from the host filesystem directly into the container storage namespace.

Antwort: B,E

Begründung:
Persistent container data must be stored outside the container ' s ephemeral writable layer. Docker volumes provide Docker-managed storage that remains independently available from the lifecycle of an individual container. Bind mounts provide another persistence mechanism by mapping a specified host file or directory directly into the container. Oracle ' s Docker documentation demonstrates both data volumes and host-path mounts for externalizing files from containers and preserving them independently. The writable container layer is removed with the container, a tmpfs mount stores data in volatile memory rather than persistent disk, and Docker image layers are immutable and cannot receive normal runtime database writes. Therefore, Docker volumes and bind mounts are the two valid persistence approaches described.

59. Frage
Which feature is typically NOT associated with Cloud Native?

A. Application Servers
B. Containers
C. Service Meshes
D. Immutable Infrastructure
E. Declarative APIs

Antwort: A

Begründung:
The feature that is typically NOT associated with Cloud Native is " Application Servers. " Cloud Native architecture emphasizes lightweight, scalable, and containerized deployments, which often replace traditional monolithic application servers. Instead of relying on application servers, Cloud Native applications are typically deployed as containerized microservices that can be orchestrated and managed using container orchestration platforms like Kubernetes. This approach enables greater flexibility, scalability, and agility in deploying and managing applications. While application servers have been widely used in traditional application architectures, they are not a characteristic feature of Cloud Native architectures. Cloud Native architectures focus on containerization, declarative APIs, immutable infrastructure, and service meshes to enable efficient and scalable deployment and management of applications.

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

A. Serverless function execution is fully managed by third party.
B. Applications running on a FaaS (Functions as a Service) platform.
C. Application DevOps team is responsible for scaling.
D. Serverless function state should never be stored externally.
E. Long running tasks are perfectly suited for serverless.

Antwort: A,B

Begründung:
The two true statements for serverless computing and serverless architectures are: Applications running on a FaaS (Functions as a Service) platform: Serverless architectures typically involve running code in the form of functions on a serverless platform. These functions are event-driven and executed in response to specific triggers or events. Serverless function execution is fully managed by a third party: In serverless computing, the cloud provider takes care of the infrastructure management and resource provisioning. The execution of serverless functions is handled automatically by the platform, relieving developers from the responsibility of managing servers or infrastructure. It ' s important to note that long running tasks are not typically suited for serverless architectures due to the event-driven nature of serverless functions. Also, while serverless functions may have state, it is recommended to avoid external storage dependencies and instead leverage stateless functions whenever possible. Additionally, scaling in serverless architectures is typically handled automatically by the platform, rather than being the responsibility of the application DevOps team.

61. Frage
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