1Z0-1084-22 Online Practice Questions and Answers

Correct Answer: B

check the steps for Creating, Deploying, and Invoking a Helloworld Function https://docs.cloud.oracle.com/en-us/iaas/Content/Functions/Tasks/functionscreatingfirst.htm in step 7 that will deploy the funcation 7- Enter the following single Fn

Project command to build the function and its dependencies as a Docker image called helloworld-func, push the image to the specified Docker registry, and deploy the function to Oracle Functions in the helloworld-app:

$ fn -v deploy --app helloworld-app

The -v option simply shows more detail about what Fn Project commands are doing (see Using the Fn Project CLI with Oracle Functions).

Correct Answer: D

If you are running your Kubernetes cluster on Oracle Container Engine for Kubernetes (commonly known as OKE), you can have OCI automatically provision load balancers for you by creating a Service of type LoadBalancer instead of (or in addition to) installing an ingress controller like Traefik or Voyage YAML file

When you apply this YAML file to your cluster, you will see the new service is created. After a short time (typically less than a minute) the OCI Load Balancer will be provisioned.

https://oracle.github.io/weblogic-kubernetes-operator/faq/oci-lb/

Correct Answer: D

Specifying Alternative Load Balancer Shapes 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. https://docs.cloud.oracle.com/en-us/iaas/Content/ContEng/Tasks/contengcreatingloadbalancer.htm

Correct Answer: BE

Service Choreography Service choreography is a global description of the participating services, which is defined by exchange of messages, rules of interaction and agreements between two or more endpoints. Choreography employs a decentralized approach for service composition. the decision logic is distributed, with no centralized point.

Choreography, in contrast, does not rely on a central coordinator. and all participants in the choreography need to be aware of the business process, operations to execute, messages to exchange, and the timing of message exchanges.

Correct Answer: C

Having created an API gateway and deployed one or more APIs on it, you'll typically want to limit the rate at which front-end clients can make requests to back-end services. For example, to:

-maintain high availability and fair use of resources by protecting back ends from being overwhelmed by too many requests

-prevent denial-of-service attacks

-constrain costs of resource consumption

- restrict usage of APIs by your customers' users in order to monetize APIs You apply a rate limit globally to all routes in an API deployment specification. If a request is denied because the rate limit has been exceeded, the response header

specifies when the request can be retried.

You can add a rate-limiting request policy to an API deployment specification by:

using the Console editing a JSON file

Correct Answer: C

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: 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

Correct Answer: BE

https://www.techjini.com/blog/microservices/

Correct Answer: C

https://www.oracle.com/webfolder/technetwork/tutorials/FAQs/oci/Functions-FAQ.pdf Oracle Functions is a fully managed, multi-tenant, highly scalable, on-demand, Functions-as-a- Service platform. It is built on enterprise-grade Oracle Cloud Infrastructure and powered by the Fn Project open source engine. Use Oracle Functions (sometimes abbreviated to just Functions) when you want to focus on writing code to meet business needs.

Correct Answer: AD

Oracle SQL Developer Web in Autonomous Data Warehouse provides a development environment and a data modeler interface for Autonomous Databases. SQL Developer Web is available for databases with both dedicated Exadata infrastructure and shared Exadata infrastructure. https://docs.cloud.oracle.com/en-us/iaas/Content/Database/Tasks/adbtools.htm

Correct Answer: C

A cascading failure is a failure that grows over time as a result of positive feedback. It can occur when a portion of an overall system fails, increasing the probability that other portions of the system fail. the circuit breaker pattern prevents the service from performing an operation that is likely to fail. For example, a client service can use a circuit breaker to prevent further remote calls over the network when a downstream service is not functioning properly. This can also prevent the network from becoming congested by a sudden spike in failed retries by one service to another, and it can also prevent cascading failures. Self-healing circuit breakers check the downstream service at regular intervals and reset the circuit breaker when the downstream service starts functioning properly. https://blogs.oracle.com/developers/getting-started-with-microservices-part-three