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The Oracle 1z0-1084-22 certification exam covers a wide range of topics related to the Oracle Cloud Infrastructure platform, including cloud-native development, security, networking, storage, and administration. The exam is designed to test the candidate's ability to develop, deploy, and manage applications on the Oracle Cloud Infrastructure platform using various tools and services provided by Oracle. Candidates are required to have a strong understanding of cloud computing concepts and principles, as well as experience working with programming languages like Java, Python, and JavaScript.
Passing the Oracle 1z0-1084-22 exam is a great way to demonstrate to potential employers that you have the skills and knowledge required to develop on the Oracle Cloud Infrastructure platform. This certification can help you stand out in a competitive job market and open up new opportunities for career advancement. Additionally, certified professionals may be eligible for higher salaries and more challenging projects.
The Oracle 1z0-1084-22 exam, also known as the Oracle Cloud Infrastructure 2022 Developer Professional exam, is a certification exam that measures the skills and knowledge of professionals in developing and deploying applications on Oracle Cloud Infrastructure. This exam is ideal for developers, architects, and IT professionals who have experience in programming, cloud computing, and Oracle technologies.
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Oracle Cloud Infrastructure 2022 Developer Professional Sample Questions (Q39-Q44):
NEW QUESTION # 39
Given a service deployed on Oracle Cloud infrastructure Container Engine for Kubernetes (OKE), which annotation should you add in the sample manifest file to specify a 400 Mbps load balancer?
- A. service . beta. kubernetes . lo/oci-load-balancer-shape: 400Mbps
- B. service . beta . kubernetes . lo/oci-load-balancer-size: 400Mbps
- C. service.beta, kubernetes. lo/oci-load-balancer-kind: 400Mbps
- D. service, beta, kubernetes. lo/oci-load-balancer-value: 4 00Mbps
Answer: A
Explanation:
The shape of an Oracle Cloud Infrastructure load balancer specifies its maximum total bandwidth (that is, ingress plus egress). By default, load balancers are created with a shape of 100Mbps. Other shapes are available, including 400Mbps and 8000Mbps.
To specify an alternative shape for a load balancer, add the following annotation in the metadata section of the manifest file:
service.beta.kubernetes.io/oci-load-balancer-shape: <value>
where value is the bandwidth of the shape (for example, 100Mbps, 400Mbps, 8000Mbps).
For example:
apiVersion: v1
kind: Service
metadata:
name: my-nginx-svc
labels:
app: nginx
annotations:
service.beta.kubernetes.io/oci-load-balancer-shape: 400Mbps
spec:
type: LoadBalancer
ports:
- port: 80
selector:
app: nginx
https://github.com/oracle/oci-cloud-controller-manager/blob/master/docs/load-balancer-annotations.md
NEW QUESTION # 40
Which two are characteristics of microservices?
- A. Microservices can be implemented in limited number of programming languages.
- B. All microservices share a data store.
- C. Microservices communicate over lightweight APIs.
- D. Microservices are hard to test in isolation.
- E. Microservices can be independently deployed.
Answer: C,E
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 # 41
What is the communication method between different Cloud native applications services?
- A. Complex and asynchronous
- B. Basic and synchronous
- C. Complex and synchronous
- D. Basic and asynchronous
Answer: D
Explanation:
What Is Cloud Native?
Cloud native technologies are characterized by the use of containers, microservices, serverless functions, development pipelines, infrastructure expressed as code, event-driven applications, and Application Programming Interfaces (APIs). Cloud native enables faster software development and the ability to build applications that are resilient, manageable, observable, and dynamically scalable to global enterprise levels.
When constructing a cloud-native application, you'll want to be sensitive to how back-end services communicate with each other. Ideally, the less inter-service communication, the better. However, avoidance isn't always possible as back-end services often rely on one another to complete an operation.
While direct HTTP calls between microservices are relatively simple to implement, care should be taken to minimize this practice. To start, these calls are always synchronous and will block the operation until a result is returned or the request times outs. What were once self-contained, independent services, able to evolve independently and deploy frequently, now become coupled to each other. As coupling among microservices increase, their architectural benefits diminish.
Executing an infrequent request that makes a single direct HTTP call to another microservice might be acceptable for some systems. However, high-volume calls that invoke direct HTTP calls to multiple microservices aren't advisable. They can increase latency and negatively impact the performance, scalability, and availability of your system. Even worse, a long series of direct HTTP communication can lead to deep and complex chains of synchronous microservices calls, shown in Figure 4-9:
A message queue is an intermediary construct through which a producer and consumer pass a message. Queues implement an asynchronous, point-to-point messaging pattern.
Events
Message queuing is an effective way to implement communication where a producer can asynchronously send a consumer a message.
References:
https://www.xenonstack.com/blog/cloud-native-architecture/
https://www.oracle.com/sa/cloud/cloud-native/
https://www.oracle.com/technetwork/topics/entarch/cloud-native-app-development-wp-3664668.pdf
NEW QUESTION # 42
Which is NOT a valid option to execute a function deployed on Oracle Functions?
- A. Trigger by an event in Oracle Cloud Infrastructure Events service
- B. Invoke from Docker CLI
- C. Send a signed HTTP requests to the function's invoke endpoint
- D. Invoke from Oracle Cloud Infrastructure CLI
- E. Invoke from Fn Project CLI
Answer: B
Explanation:
You can invoke a function that you've deployed to Oracle Functions in different ways:
Using the Fn Project CLI.
Using the Oracle Cloud Infrastructure CLI.
Using the Oracle Cloud Infrastructure SDKs.
Making a signed HTTP request to the function's invoke endpoint. Every function has an invoke endpoint.
Each of the above invokes the function via requests to the API. Any request to the API must be authenticated by including a signature and the OCID of the compartment to which the function belongs in the request header. Such a request is referred to as a 'signed' request. The signature includes Oracle Cloud Infrastructure credentials in an encrypted form.
NEW QUESTION # 43
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 API signing key to complete the authentication via Docker CLI.
- B. Generate an OCI tag namespace in your repository.
- C. Generate an auth token to complete the authentication via Docker CLI.
- D. Assign an OCI defined tag via OCI CLI to the image.
- E. Assign a tag via Docker CLI to the image.
Answer: C,E
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 # 44
......
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