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NEW QUESTION 39
Which testing approaches is a must for achieving high velocity of deployments and release of cloud-native applications?
Answer: B
Explanation:
Oracle Cloud Infrastructure provides a number of DevOps tools and plug-ins for working with Oracle Cloud Infrastructure services. These can simplify provisioning and managing infrastructure or enable automated testing and continuous delivery.
A/B Testing
While A/B testing can be combined with either canary or blue-green deployments, it is a very different thing. A/B testing really targets testing the usage behavior of a service or feature and is typically used to validate a hypothesis or to measure two versions of a service or feature and how they stack up against each other in terms of performance, discoverability and usability. A/B testing often leverages feature flags (feature toggles), which allow you to dynamically turn features on and off.
Integration Testing
Integration tests are also known as end-to-end (e2e) tests. These are long-running tests that exercise the system in the way it is intended to be used in production. These are the most valuable tests in demonstrating reliability and thus increasing confidence.
Penetration Testing
Oracle regularly performs penetration and vulnerability testing and security assessments against the Oracle cloud infrastructure, platforms, and applications. These tests are intended to validate and improve the overall security of Oracle Cloud Services.
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/API/Concepts/devopstools.htm
NEW QUESTION 40
You are developing a serverless application with Oracle Functions. Your function needs to store state in a database. Your corporate security Standards mandate encryption of secret information like database passwords.
As a function developer, which approach should you follow to satisfy this security requirement?
Answer: D
Explanation:
Oracle Functions: Using Key Management To Encrypt And Decrypt Configuration Variables Since this process involves multiple steps, I thought it would be helpful to give you an outline of the steps that we're going to take:
Create a KMS vault
Create a Master Encryption Key
Generate a Data Encryption Key (DEK) from the Master Encryption Key
Use the DEK plaintext return value to encrypt the sensitive value (offline) Store the encrypted sensitive value as a config variable in the serverless application Store the DEK ciphertext and the initVector used to encrypt the sensitive value as Function config variables Within the function, decrypt the DEK ciphertext back into plaintext using the OCID and Cryptographic Endpoint by invoking the OCI KMS SDK Decrypt the sensitive value using the decrypted DEK plaintext and the initVector
References:
https://blogs.oracle.com/developers/oracle-functions-using-key-management-to-encrypt-and-decrypt-configuration-variables
https://docs.oracle.com/en/database/other-databases/essbase/19.3/essad/encrypt-values-using-kms.html
NEW QUESTION 41
You have two microservices, A and B running in production. Service A relies on APIs from service B.
You want to test changes to service A without deploying all of its dependencies, which includes service B.
Which approach should you take to test service A?
Answer: D
Explanation:
Best Practices: API Mocking:
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 The most common term for creating simulated components is mocking, but others are also used, and partly apply to different things; stubbing, simulation, and virtualization. The basic concept is the same - instead of using an actual software component (an API in our case) - a "replacement" version of that API is created and used instead. It behaves as the original API, but lacks many of the functional and non-functional characteristics of the original component. Which term is applicable depends on the degree to which the mock-up corresponds to the actual API:
Stubbing: mostly a placeholder without real functionality
Mocking: basic functionality required for a specific testing or development purpose Simulation: complete functionality for testing or development purposes Virtualization: imulation that is deployed into an operational, manageable and controllable environment
References:
https://docs.oracle.com/en/solutions/build-governance-app-oracle-paas/test-custom-apis.html
https://www.soapui.org/learn/mocking/what-is-api-mocking/
NEW QUESTION 42
A developer using Oracle Cloud Infrastructure (OCI) API Gateway must authenticate the API requests to their web application. The authentication process must be implemented using a custom scheme which accepts string parameters from the API caller. Which method can the developer use In this scenario?
Answer: C
Explanation:
Using Authorizer Functions to Add Authentication and Authorization to API Deployments:
You can control access to APIs you deploy to API gateways using an 'authorizer function' (as described in this topic), or using JWTs (as described in Using JSON Web Tokens (JWTs) to Add Authentication and Authorization to API Deployments).
You can add authentication and authorization functionality to API gateways by writing an 'authorizer function' that:
1. Processes request attributes to verify the identity of a caller with an identity provider.
2.Determines the operations that the caller is allowed to perform.
3.Returns the operations the caller is allowed to perform as a list of 'access scopes' (an 'access scope' is an arbitrary string used to determine access).
Optionally returns a key-value pair for use by the API deployment. For example, as a context variable for use in an HTTP back end definition (see Adding Context Variables to Policies and HTTP Back End Definitions).
Create an authorizer function using request header authorization implemented using a custom scheme which accepts string parameters from the API caller.
Managing Input Parameters
In our case we will need to manage quite a few static parameters in our code. For example the URLs of the secrets service endpoints, the username and other constant parameterised data. We can manage these either at Application or Function level (an OCI Function is packaged in an Application which can contain multiple Functions). In this case I will create function level parameters. You can use the following command to create the parameters:
fn config function test idcs-assert idcsClientId aedc15531bc8xxxxxxxxxxbd8a193
References:
https://technology.amis.nl/2020/01/03/oracle-cloud-api-gateway-using-an-authorizer-function-for-client-secret-authorization-on-api-access/
https://docs.cloud.oracle.com/en-us/iaas/Content/APIGateway/Tasks/apigatewayusingauthorizerfunction.htm
https://www.ateam-oracle.com/how-to-implement-an-oci-api-gateway-authorization-fn-in-nodejs-that-accesses-oci-resources
NEW QUESTION 43
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