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Oracle 1z0-1084-22 Exam Syllabus Topics:

Topic	Details
Topic 1	Build event-driven serverless applications using OCI event service Explain DevOps and discuss the role of container orchestration
Topic 2	Monitoring & Troubleshooting Cloud Native Applications Perform Tasks around Monitoring, Logging, and Tracing
Topic 3	Explain cloud native testing and discuss measures for testing cloud native applications Develop Serverless Application with Oracle Functions
Topic 4	Create API gateways to process traffic from API clients and route it to back-end services Leveraging Serverless Technologies for Cloud Native Development
Topic 5	Apply security measures to overcome challenges with cloud native development Explain docker and the concepts around its architecture and components
Topic 6	Use OCI Logging service to enable, manage, and search logs Testing and Securing Cloud Native Applications
Topic 7	Discuss various strategies for testing cloud native applications Cloud Native Applications And Containerization
Topic 8	Utilize OCI Monitoring service to view metrics Explain the fundamentals of cloud native and discuss the key pillars of cloud native development

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Oracle Cloud Infrastructure 2022 Developer Professional Sample Questions (Q17-Q22):

NEW QUESTION # 17
What are two of the main reasons you would choose to implement a serverless architecture?

A. Improved In-function state management
B. Easier to run long-running operations
C. Automatic horizontal scaling
D. No need for integration testing
E. Reduced operational cost

Answer: C,E

Explanation:
Serverless computing refers to a concept in which the user does not need to manage any server infrastructure at all. The user does not run any servers, but instead deploys the application code to a service provider's platform. The application logic is executed, scaled, and billed on demand, without any costs to the user when the application is idle.
Benefits of the Serverless or FaaS
So far almost every aspect of Serverless or FaaS is discussed in a brief, so let's talk about the pros and cons of using Serverless or FaaS Reduced operational and development cost Serverless or FaaS offers less operational and development cost as it encourages to use third-party services like Auth, Database and etc.
Scaling
Horizontal scaling in Serverless or FaaS is completely automatic, elastic and managed by FaaS provider. If your application needs more requests to be processed in parallel the provider will take of that without you providing any additional configuration.
References:
https://medium.com/@avishwakarma/serverless-or-faas-a-deep-dive-e67908ca69d5
https://qvik.com/news/serverless-faas-computing-costs/
https://pages.awscloud.com/rs/112-TZM-766/images/PTNR_gsc-serverless-ebook_Feb-2019.pdf

NEW QUESTION # 18
You want to push a new image in the Oracle Cloud Infrastructure (OCI) Registry. Which two actions do you need to perform?

A. Generate an auth token to complete the authentication via Docker CLI.
B. Generate an OCI tag namespace in your repository.
C. Assign an OCI defined tag via OCI CLI to the image.
D. Assign a tag via Docker CLI to the image.
E. Generate an API signing key to complete the authentication via Docker CLI.

Answer: A,D

Explanation:
Pushing Images Using the Docker CLI:
You use the Docker CLI to push images to Oracle Cloud Infrastructure Registry.
To push an image, you first use the docker tag command to create a copy of the local source image as a new image (the new image is actually just a reference to the existing source image). As a name for the new image, you specify the fully qualified path to the target location in Oracle Cloud Registry where you want to push the image, optionally including the name of a repository.
For example, assume you have a local image named acme-web-app:latest. Let's say you want to push this image to Oracle Cloud Infrastructure Registry with a name of acme-web-app:version2.0.test into a repository called project01 in the Ashburn region of the acme-dev tenancy. When you use the docker tag command, you'd name the new image with the fully qualified path to its destination, in the format <region-key>.ocir.io/<tenancy-namespace>/<repo-name>/<image-name>:<tag>. So in this case, you'd name the new image iad.ocir.io/ansh81vru1zp/project01/acme-web-app:version2.0.test. Subsequently, when you use the docker push command, the image's name ensures it is pushed to the correct destination.
To push images to Oracle Cloud Infrastructure Registry using the Docker CLI:
If you already have an auth token, go to the next step. Otherwise:

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.
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/Registry/Tasks/registrypushingimagesusingthedockercli.htm

NEW QUESTION # 19
Which two are characteristics of microservices?

A. Microservices communicate over lightweight APIs.
B. Microservices can be independently deployed.
C. Microservices can be implemented in limited number of programming languages.
D. All microservices share a data store.
E. Microservices are hard to test in isolation.

Answer: A,B

Explanation:
Learn About the Microservices Architecture
If you want to design an application that is multilanguage, easily scalable, easy to maintain and deploy, highly available, and that minimizes failures, then use the microservices architecture to design and deploy a cloud application.
In a microservices architecture, each microservice owns a simple task, and communicates with the clients or with other microservices by using lightweight communication mechanisms such as REST API requests.
The following diagram shows the architecture of an application that consists of multiple microservices.

Microservices enable you to design your application as a collection of loosely coupled services. Microservices follow the share-nothing model, and run as stateless processes. This approach makes it easier to scale and maintain the application.
The API layer is the entry point for all the client requests to a microservice. The API layer also enables the microservices to communicate with each other over HTTP, gRPC, and TCP/UDP.
The logic layer focuses on a single business task, minimizing the dependencies on the other microservices. This layer can be written in a different language for each microservice.
The data store layer provides a persistence mechanism, such as a database storage engine, log files, and so on. Consider using a separate persistent data store for each microservice.
Typically, each microservice runs in a container that provides a lightweight runtime environment.
Loosely coupled with other services - enables a team to work independently the majority of time on their service(s) without being impacted by changes to other services and without affecting other services

References:
https://docs.oracle.com/en/solutions/learn-architect-microservice/index.html
https://microservices.io/patterns/microservices.html
https://www.techjini.com/blog/microservices/

NEW QUESTION # 20
You are deploying an API via Oracle Cloud Infrastructure (OCI) API Gateway and you want to implement request policies to control access Which is NOT available in OCI API Gateway?

A. Providing authentication and authorization
B. Limiting the number of requests sent to backend services
C. Enabling CORS (Cross-Origin Resource Sharing) support
D. Controlling access to OCI resources

Answer: D

Explanation:
Adding Request Policies and Response Policies to API Deployment Specifications:
You can control the behavior of an API deployment you create on an API gateway by adding request and response policies to the API deployment specification:
a request policy describes actions to be performed on an incoming request from a caller before it is sent to a back end a response policy describes actions to be performed on a response returned from a back end before it is sent to a caller You can use request policies to:
limit the number of requests sent to back-end services
enable CORS (Cross-Origin Resource Sharing) support
provide authentication and authorization
You can add request and response policies that apply globally to all routes in an API deployment specification, and also (in some cases) request and response policies that apply only to particular routes.
Note the following:
No response policies are currently available.
API Gateway request policies and response policies are different to IAM policies, which control access to Oracle Cloud Infrastructure resources.
You can add request and response policies to an API deployment specification by:
using the Console
editing a JSON file
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/APIGateway/Tasks/apigatewayaddingrequestpolicies.htm

NEW QUESTION # 21
You are working on a serverless DevSecOps application using Oracle Functions. You have deployed a Python function that uses the Oracle Cloud Infrastructure (OCI) Python SDK to stop any OC1 Compute instance that does not comply with your corporate security standards There are 3 non compliant OCI Compute instances.
However, when you invoke this function none of the instances were stopped. How should you troubleshoot this?

A. Enable function tracing in the OCI console, and go to OCI Monitoring console to see the function stack trace.
B. There is no way to troubleshoot a function running on Oracle Functions.
C. Enable function remote debugging in the OCI console, and use your favorite IDE to inspect the function running on Oracle Functions.
D. Enable function logging in the OCI console, include some print statements in your function code and use logs to troubleshoot this.

Answer: D

Explanation:
Storing and Viewing Function Logs:
When a function you've deployed to Oracle Functions is invoked, you'll typically want to store the function's logs so that you can review them later. You specify where Oracle Functions stores a function's logs by setting a logging policy for the application containing the function.
You can specify that Oracle Functions:
Stores logs in Oracle Cloud Infrastructure. Until an Oracle Cloud Infrastructure logging service is released, Oracle Functions stores logs as files in a storage bucket in Oracle Cloud Infrastructure Object Storage.
Note that to view function logs in a storage bucket, the group to which you belong must have been granted access with the following identity policy statements:
Allow group <group-name> to manage object-family in compartment <compartment-name> Allow group <group-name> to read objectstorage-namespaces in compartment <compartment-name> (Usually created when configuring your tenancy for function development. See Create a Policy to Give Oracle Functions Users Access to Oracle Cloud Infrastructure Registry Repositories.) Stores logs by exporting them to an external logging destination like Papertrail. Note that to use an external logging destination, you must have set up a VCN with public subnets and an internet gateway (see Create the VCN and Subnets to Use with Oracle Functions, if they don't exist already).
You set application logging policies in the Console.
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/Functions/Tasks/functionsexportingfunctionlogfiles.htm

NEW QUESTION # 22
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