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  1. Home
  2. Oracle Certification
  3. 1Z0-1084-21 Exam
  4. Oracle.1Z0-1084-21.v2022-03-23.q24 Dumps
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Question 16

In order to effectively test your cloud-native applications, you might utilize separate environments (development, testing, staging, production, etc.). Which Oracle Cloud Infrastructure (OC1) service can you use to create and manage your infrastructure?

Correct Answer: C
Explanation
Resource Manager is an Oracle Cloud Infrastructure service that allows you to automate the process of provisioning your Oracle Cloud Infrastructure resources. Using Terraform, Resource Manager helps you install, configure, and manage resources through the "infrastructure-as-code" model.
References:
https://docs.cloud.oracle.com/iaas/Content/ResourceManager/Concepts/resourcemanager.htm
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Question 17

You are a consumer of Oracle Cloud Infrastructure (OCI) Streaming service. Which API should you use to read and process the stream?

Correct Answer: B
Explanation
https://docs.cloud.oracle.com/en-us/iaas/Content/Streaming/Concepts/streamingoverview.htm
Building consumers to read and process messages from a stream using the GetMessages API .
How StreamingWorks:
The Streaming service provides a robust, scalable mechanism that you can use to produce and consume high volumes of data between application components.
Here's how Streaming works: a producer publishes messages to a stream, which is an append-only log. These messages are distributed among the partitions using the message's key.
Streams are divided into a number of partitions for scalability. Partitions allow you to distribute a stream by splitting messages across multiple nodes (or brokers). Each partition can be placed on a separate machine to allow multiple consumers to read a stream in parallel. Multiple consumers can read from any partition regardless of where the partition is hosted.
A consumer can read messages from one or more streams. Each message within a stream is marked with an offset value, so a consumer can pick up where it left off if it is interrupted.
You can use the Streaming service by:
A:Creating a stream using the Console or API.
B:Using a producer to publish data to the stream.
C:Building consumers to read and process stream using the GetMessages API . .
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/Streaming/Concepts/streamingoverview.htm
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Question 18

How do you perform a rolling update in Kubernetes?

Correct Answer: B
Explanation
https://docs.oracle.com/en/cloud/iaas/wercker-cloud/wercm/quickstarts/platforms/kubernetes/
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Question 19

As a cloud-native developer, you have written a web service for your company. You have used Oracle Cloud Infrastructure (OCI) API Gateway service to expose the HTTP backend. However, your security team has suggested that your web service should handle Distributed Denial-of-Service (DDoS) attack. You are time-constrained and you need to make sure that this is implemented as soon as possible.
What should you do in this scenario?

Correct Answer: C
Explanation
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 arate-limiting request policy to an API deployment specification by:
using the Console
editing a JSON file
{
"requestPolicies": {
"rateLimiting": {
"rateKey": "CLIENT_IP",
"rateInRequestsPerSecond": 10
}
},
"routes":[
{
"path": "/hello",
"methods": ["GET"],
"backend": {
"type": "ORACLE_FUNCTIONS_BACKEND",
"functionId": "ocid1.fnfunc.oc1.phx.aaaaaaaaab______xmq"
}
}
]
}
https://docs.cloud.oracle.com/en-us/iaas/Content/APIGateway/Tasks/apigatewaylimitingbackendaccess.htm
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Question 20

Which two statements accurately describe Oracle SQL Developer Web on Oracle Cloud Infrastructure (OCI) Autonomous Database?

Correct Answer: A,D
Explanation
Oracle SQL Developer WebOracle SQLDeveloper 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
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