[2022] Verified 1Z0-1084-21 Dumps Q&As – 1 Year Free & Quickly Updates [Q36-Q59]

NO.36 You are tasked with developing an application that requires the use of Oracle Cloud Infrastructure (OCI) APIs to POST messages to a stream in the OCI Streaming service.
Which statement is incorrect?

The request must include an authorization signing string including (but not limited to) x-content-sha256, content-type, and content-length headers.

The Content-Type header must be Set to application/j son

An HTTP 401 will be returned if the client’s clock is skewed more than 5 minutes from the server’s.

The request does not require an Authorization header.

NO.37 How do you perform a rolling update in Kubernetes?

kubect1 rolling-update

kubect1 upgrade <deployment-name> -image=*image:v2

kubect1 update -c <container>

kubect1 rolling-update <deployment-name> -image=image

NO.38 You want to push a new image in the Oracle Cloud Infrastructure (OCI) Registry. Which two actions do you need to perform?

Assign a tag via Docker CLI to the image.

Generate an auth token to complete the authentication via Docker CLI.

Generate an API signing key to complete the authentication via Docker CLI.

Assign an OCI defined tag via OCI CLI to the image.

Generate an OCI tag namespace in your repository.

NO.39 Given a service deployed on Oracle Cloud infrastructure Container Engine for Kubernetes (OKE), which annotation should you add in the sample manifest file to specify a 400 Mbps load balancer?

service.beta, kubernetes. lo/oci-load-balancer-kind: 400Mbps

service, beta, kubernetes. lo/oci-load-balancer-value: 4 00Mbps

service . beta. kubernetes . lo/oci-load-balancer-shape: 400Mbps

service . beta . kubernetes . lo/oci-load-balancer-size: 400Mbps

NO.40 In a Linux environment, what is the default locations of the configuration file that Oracle Cloud Infrashtructure CLI uses for profile information/

/etc/.oci/config

/usr/local/bin/config

SHOME/.oci/config

/usr/bin/oci/config

NO.41 What can you use to dynamically make Kubernetes resources discoverable topublic DNS servers?

ExternalDNS

CoreDNS

DynDNS

kubeDNS

NO.42 You have written a Node.js function and deployed it to Oracle Functions. Next, you need to call this function from a microservicewritten in Java deployed on Oracle Cloud Infrastructure (OCI) Container Engine for Kubernetes (OKE).
Which can help you to achieve this?

Use the OCI CLI with kubect1 to invoke the function from the microservice.

Oracle Functions does not allow a microservice deployed on OKE to invoke a function.

OKE does not allow a microservice to invoke a function from Oracle Functions.

Use the OCI Java SDK to invoke the function from the microservice.

NO.43 Which is NOT a supported SDk Oracle Cloud Infrastructure (OCI)?

Go SDK

Java SDK

NET SDK

Ruby SDK

Python SDK

NO.44 What is thecommunication method between different Cloud native applications services?

Complex and asynchronous

Basic and synchronous

Complex and synchronous

Basic and asynchronous

Explanation
What Is Cloud Native?
Cloud native technologies arecharacterized 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 developmentand 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 longseries 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

NO.45 Which testingapproaches is a must for achieving high velocity of deployments and release of cloud-native applications?

Integration testing

A/B testing

Automated testing

Penetration testing

NO.46 Which one of the statements describes a service aggregator pattern?

It isimplemented in each service separately and uses a streaming service

It involves implementing a separate service that makes multiple calls to other backend services

It uses a queue on both sides of the service communication

It involves sending events through a message broker

NO.47 Which is NOT a supported SDK on Oracle Cloud Infrastructure (OCI)?

Ruby SDK

Java SDK

Python SDK

Go SDK

.NET SDK

NO.48 Which two statements accurately describe an Oracle Functions application?

Asmall block of code invoked in response to an Oracle Cloud Infrastructure (OCI) Events service

A Docker image containing all the functions that share the same configuration

An application based on Oracle Functions, Oracle Cloud Infrastructure (OCI) Events and OCI API Gateway services

A common context to store configuration variables that are available to all functions in the application

A logical group of functions

NO.49 In the sample Kubernetesmanifest file below, what annotations should you add to create a private load balancer In oracle Cloud infrastructure Container Engine for Kubermetes?

A)

B)

C)

D)

Option A

Option B

Option C

Option D

NO.50 Which header is NOT required when signing GET requests to Oracle Cloud Infrastructure APIs?

date or x-date

(request-target)

content-type

host

NO.51 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?

Use OCI virtual cloud network (VCN) segregation to control DDoS.

Use a third party service integration to implement a DDoS attack mitigation,

Use OCI API Gateway service and configure rate limiting.

Re-write your web service and implement rate limiting.

NO.52 Which two handle Oracle Functionsauthentication automatically?

Oracle Cloud Infrastructure SDK

cURL

Oracle Cloud Infrastructure CLl

Signed HTTP Request

Fn Project CLI

NO.53 Your organization uses a federated identity provider to login to your Oracle Cloud Infrastructure (OCI) environment. As a developer, you are writing a script to automate some operation and want to use OCI CLI to do that. Your security team doesn’t allow storing private keys on local machines.
How can you authenticate with OCI CLI?

Run oci setup keys and provide your credentials

Run oci session refresh -profile <profile_name>

Run oci session authenticate and provide your credentials

Run oci setup oci-cli-rc -file path/to/target/file

NO.54 Per CAP theorem, in which scenario do you NOTneed to make any trade-off between the guarantees?

when there are no network partitions

when the system is running in the cloud

when the system is running on-premise

when you are using load balancers

NO.55 Which two “Action Type” options are NOT available in an Oracle Cloud Infrastructure (OCI) Events rule definition?

Notifications

Functions

Streaming

Email

Slack

NO.56 A programmerIs developing a Node is application which will run in a Linux server on their on-premises data center. This application will access various Oracle Cloud Infrastructure (OC1) services using OCI SDKs.
What is the secure way to access OCI services with OCI Identity and Access Management (JAM)?

Create a new OCI IAM user associated with a dynamic group and a policy that grants the desired permissions to OCI services. Add the on-premises Linux server in the dynamic group.

Create an OCI IAM policy with theappropriate permissions to access the required OCI services and assign the policy to the on-premises Linux server.

Create a new OCI IAM user, add the user to a group associated with a policy that grants the desired permissions to OCI services. In the on-premises Linux server, generate the keypair used for signing API requests and upload the public key to the IAM user.

Create a new OCI IAM user, add the user to a group associated with a policy that grants the desired permissions to OCI services. In theon-premises Linux server, add the user name and password to a file used by Node.js authentication.

NO.57 You have deployed a Python application on Oracle Cloud Infrastructure Container Engine for Kubernetes.
However, during testing you found a bug that you rectified and created a new Docker image. You need to make sure that if this new Image doesn’t work then you can roll back to the previous version.
Using kubectl, which deployment strategies should you choose?

Rolling Update

Canary Deployment

Blue/Green Deployment

A/B Testing

NO.58 You are using Oracle Cloud Infrastructure (0CI) Resource Manager to manage your infrastructure lifecycle and wish to receive an email each time a Terraform action begins.
How should you use the OCI Events service to do this without writing any code?

Create an OCI Notifications topic and email subscription with the destination email address. Then create an OCI Events rule matching “Resource Manager Stack – Update” condition, and select the notification topic for the corresponding action.

Create an OCI Notification topic and email subscription with the destination email address. Then create an OCI Events rule matching “Resource Manager job – Create” condition, and select the notification topic for the corresponding action.

Create a rule in OCI Events service matching the “Resource Manager Stack – Update” condition. Then select “Action Type: Email” and provide the destination email address.

Create an OCI Email Delivery configuration with thedestination email address. Then create an OCI Events rule matching “Resource Manager Job – Create” condition, and select the email configuration for the corresponding action.

NO.59 What is the minimum of storage that a persistent volume claim can obtain in Oracle Cloud Infrastructure Container Engine for Kubernetes (OKE)?

50 GB

10 GB

1 GB

1 TB

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