1Z0-1084-21 Online Practice Questions and Answers

Correct Answer: B

this pattern isolates an operation that makes calls to multiple back-end microservices, centralizing its logic into a specialized microservice.

Correct Answer: A

CAP THEOREM

"CONSISTENCY, AVAILABILITY and PARTITION TOLERANCE are the features that we want in our

distributed system together"

Of three properties of shared-data systems (Consistency, Availability and tolerance to network Partitions)

only two can be achieved at any given moment in time.

Correct Answer: B

Testing using API mocks Developers are frequently tasked with writing code that integrates with other system components via APIs. Unfortunately, it might not always be desirable or even possible to actually access those systems during development. There could be security, performance or maintenance issues that make them unavailable ? or they might simply not have been developed yet. This is where mocking comes in: instead of developing code with actual external dependencies in place, a mock of those dependencies is created and used instead. Depending on your development needs this mock is made "intelligent" enough to allow you to make the calls you need and get similar results back as you would from the actual component, thus enabling development to move forward without being hindered by eventual unavailability of external systems you depend on

Correct Answer: C

https://docs.cloud.oracle.com/en-us/iaas/Content/API/Concepts/sdks.htm

Software Development Kits (SDKs) Build and deploy apps that integrate with Oracle Cloud Infrastructure services. Each SDK provides the tools you need to develop an app, including code samples and documentation to create, test, and troubleshoot. In addition, if you want to contribute to the development of the SDKs, they are all open source and available on GitHub. SDK for Java Python SDK Ruby SDK Go SDK

Correct Answer: D

Oracle Cloud Infrastructure Web Application Firewall (WAF) is a cloud-based, Payment Card Industry (PCI) compliant, global security service that protects applications from malicious and unwanted internet traffic. WAF can protect any internet facing endpoint, providing consistent rule enforcement across a customer's applications. WAF provides you with the ability to create and manage rules for internet threats including Cross- Site Scripting (XSS), SQL Injection and other OWASP-defined vulnerabilities. Unwanted bots can be mitigated while tactically allowed desirable bots to enter. Access rules can limit based on geography or the signature of the request.

Correct Answer: A

https://blogs.oracle.com/developers/creating-an-atp-instance-with-the-oci-service-broker https://blogs.oracle.com/cloud-infrastructure/integrating-oci-service-broker-with-autonomous- transaction-processing-in-the-real-world

Correct Answer: C

Token-based authentication for the CLI allows customers to authenticate their session interactively, then

use the CLI for a single session without an API signing key. This enables customers using an identity

provider that is not SCIM- supported to use a federated user account with the CLI and SDKs.

Starting a Token-based CLI Session

To use token-based authentication for the CLI on a computer with a web browser:

In the CLI, run the following command. This will launch a web browser.

oci session authenticate

In the browser, enter your user credentials. This authentication information is saved to the .config file.

Correct Answer: AB

When a function you've deployed to Oracle Functions is running, it can access other Oracle Cloud Infrastructure resources. For example:

-

You might want a function to get a list of VCNs from the Networking service.

-

You might want a function to read data from an Object Storage bucket, perform some operation on the

data, and then write the modified data back to the Object Storage bucket. To enable a function to access another Oracle Cloud Infrastructure resource, you have to include the function in a dynamic group, and then create a policy to grant the dynamic group access to that resource. https://docs.cloud.oracle.com/en-us/iaas/Content/Functions/Tasks/functionsaccessingociresources.htm

Correct Answer: B

Troubleshooting Oracle Functions

If you encounter an unexpected error when using an Fn Project CLI command, you can find out more

about the problem by starting the command with the string DEBUG=1 and running the command again.

For example:

$ DEBUG=1 fn invoke helloworld-app helloworld-func

Note that DEBUG=1 must appear before the command, and that DEBUG must be in upper case.

Correct Answer: C

In the API Gateway service, a back end is the means by which a gateway routes requests to the back- end services that implement APIs. If you add a private endpoint back end to an API gateway, you give the API gateway access to the VCN associated with that private endpoint. You can also grant an API gateway access to other Oracle Cloud Infrastructure services as back ends. For example, you could grant an API gateway access to Oracle Functions, so you can create and deploy an API that is backed by a serverless function. API Gateway service to create an API gateway, you can create an API deployment to access HTTP and HTTPS URLs. https://docs.cloud.oracle.com/en-us/iaas/Content/APIGateway/Tasks/ apigatewayusinghttpbackend.htm API Gateway service to create an API gateway, you can create an API deployment that invokes serverless functions defined in Oracle Functions. https://docs.cloud.oracle.com/en-us/iaas/Content/APIGateway/Tasks/ apigatewayusingfunctionsbackend.htm API Gateway service, you can define a path to a stock response back end https://docs.cloud.oracle.com/en-us/iaas/Content/ APIGateway/Tasks/ apigatewayaddingstockresponses.htm