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NEW QUESTION 53
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: A
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 54
What is the communication method between different Cloud native applications services?
Answer: C
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 55
Which statements is incorrect with regards to the Oracle Cloud Infrastructure (OCI) Notifications service?
Answer: B
Explanation:
Notification service supports subscriptions topics: E-Mail, Function, Https, PagerDuty and Slack
Alarms: Notifications sends alarm messages when alarms are breached. The alarm message is sent to the topic specified in the alarm. For example, an alarm message might be configured for high CPU usage. See Managing Alarms.
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/Notification/Concepts/notificationoverview.htm
NEW QUESTION 56
What is the open source engine for Oracle Functions?
Answer: C
Explanation:
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.
NEW QUESTION 57
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