Oracle 1Z0-1084-21 Online Practice Questions and Exam Preparation

Oracle 1Z0-1084-21 Online Questions & Answers

• Question 31:

  You want to push a new image in the Oracle Cloud Infrastructure (OCI) Registry. Which two actions do you need to perform?

  A. Assign a tag via Docker CLI to the image.
  B. Generate an auth token to complete the authentication via Docker CLI.
  C. Generate an API signing key to complete the authentication via Docker CLI.
  D. Assign an OCI defined tag via OCI CLI to the image.
  E. Generate an OCI tag namespace in your repository.
  A. Assign a tag via Docker CLI to the image.
  B. Generate an auth token to complete the authentication via Docker CLI.

  ---

  You use the Docker CLI to push images to Oracle Cloud Infrastructure Registry. To push an image, you first use the docker tag command to create a copy of the local source image as a new image (the new image is actually just a reference to the existing source image). As a name for the new image, you specify the fully qualified path to the target location in Oracle Cloud Registry where you want to push the image, optionally including the name of a repository. for more details check the below link

  https://docs.cloud.oracle.com/en-us/iaas/Content/Registry/Tasks/registrypushingimagesusingthedockercli.htm

• Question 32:

  You are building a cloud native, serverless travel application with multiple Oracle Functions in Java, Python and Node.js. You need to build and deploy these functions to a single applications named travel-app. Which command will help you complete this task successfully?

  A. oci fn function deploy --ap travel-ap --all
  B. fn deploy --ap travel-ap -- all
  C. oci fn application --application-name-ap deploy --all
  D. fn function deploy --all --application-name travel-ap
  B. fn deploy --ap travel-ap -- all

  ---

  check the steps for Creating, Deploying, and Invoking a Helloworld Function https://docs.cloud.oracle.com/en-us/iaas/Content/Functions/Tasks/functionscreatingfirst.htm in step 7 that will deploy the funcation 7- Enter the following single Fn

  Project command to build the function and its dependencies as a Docker image called helloworld-func, push the image to the specified Docker registry, and deploy the function to Oracle Functions in the helloworld-app:

  $ fn -v deploy --app helloworld-app

  The -v option simply shows more detail about what Fn Project commands are doing (see Using the Fn Project CLI with Oracle Functions).

• Question 33:

  What is the open source engine for Oracle Functions?

  A. Apache OpenWhisk
  B. OpenFaaS
  C. Fn Project
  D. Knative
  C. Fn Project

  ---

  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.

• Question 34:

  How can you find details of the tolerations field for the sample YAML file below?

  

  A. kubectl list pod.spec.tolerations
  B. kubectl explain pod.spec.tolerations
  C. kubectl describe pod.spec tolerations
  D. kubectl get pod.spec.tolerations
  B. kubectl explain pod.spec.tolerations

  ---

  kubectl explain to List the fields for supported resources

  https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#explain

• Question 35:

  You are developing a serverless application with Oracle Functions and Oracle Cloud Infrastructure Object Storage- Your function needs to read a JSON file object from an Object Storage bucket named "input-bucket" in compartment "qacompartment". Your corporate security standards mandate the use of Resource Principals for this use case.

  Which two statements are needed to implement this use case?

  A. Set up a policy with the following statement to grant read access to the bucket:allow dynamic-group read-file-dg to read objects in compartment qa-compartment where target .bucket .name=' input-bucket *
  B. Set up the following dynamic group for your function's OCID: Name: read-file-dg Rule: resource.id = `ocid1.fnfunc.oc1.phx.aaaaaaaakeaobctakezjz5i4ujj7g25q7sx5mvr55pms6f4da'
  C. Set up a policy to grant all functions read access to the bucket:allow all functions in compartment qa-compartment to read objects in target.bucket.name='input-bucket'
  D. Set up a policy to grant your user account read access to the bucket:allow user XYZ to read objects in compartment qa-compartment where target .bucket, name-'input-bucket'
  E. No policies are needed. By default, every function has read access to Object Storage buckets in the tenancy
  A. Set up a policy with the following statement to grant read access to the bucket:allow dynamic-group read-file-dg to read objects in compartment qa-compartment where target .bucket .name=' input-bucket *
  B. Set up the following dynamic group for your function's OCID: Name: read-file-dg Rule: resource.id = `ocid1.fnfunc.oc1.phx.aaaaaaaakeaobctakezjz5i4ujj7g25q7sx5mvr55pms6f4da'

  ---

  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

• Question 36:

  What is the minimum amount of storage that a persistent volume claim can obtain In Oracle Cloud Infrastructure Container Engine for Kubemetes (OKE)?

  A. 1 TB
  B. 10 GB
  C. 1 GB
  D. 50 GB
  D. 50 GB

  ---

  https://docs.cloud.oracle.com/en-us/iaas/Content/ContEng/Concepts/contengprerequisites.htm

• Question 37:

  Which one of the following is NOT a valid backend-type supported by Oracle Cloud Infrastructure (OCI) API Gateway?

  A. STOCK_RESPONSE_BACKEND
  B. ORACLE_FUNCTIONS_BACKEND
  C. ORACLE_STREAMS_BACKEND
  D. HTTP_BACKEND
  C. ORACLE_STREAMS_BACKEND

  ---

  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

• Question 38:

  You are working on a serverless DevSecOps application using Oracle Functions. You have deployed a Python function that uses the Oracle Cloud Infrastructure (OCI) Python SDK to stop any OC1 Compute instance that does not comply

  with your corporate security standards There are 3 non compliant OCI Compute instances.

  However, when you invoke this function none of the instances were stopped. How should you troubleshoot this?

  A. There is no way to troubleshoot a function running on Oracle Functions.
  B. Enable function logging in the OCI console, include some print statements in your function code and use logs to troubleshoot this.
  C. Enable function remote debugging in the OCI console, and use your favorite IDE to inspect the function running on Oracle Functions.
  D. Enable function tracing in the OCI console, and go to OCI Monitoring console to see the function stack trace.
  B. Enable function logging in the OCI console, include some print statements in your function code and use logs to troubleshoot this.

  ---

  Storing and Viewing Function Logs When a function you've deployed to Oracle Functions is invoked, you'll typically want to store the function's logs so that you can review them later. You specify where Oracle Functions stores a function's logs by setting a logging policy for the application containing the function. You set application logging policies in the Console. Whenever a function is invoked in this application, its logs are stored according to the logging policy that you specified. you can view the logs for a function that have been stored in a storage bucket in Oracle Cloud Infrastructure Object Storage https://docs.cloud.oracle.com/en-us/iaas/Content/Functions/Tasks/functionsexportingfunctionlogfiles.htm

• Question 39:

  Which two are benefits of distributed systems?

  A. Privacy
  B. Security
  C. Ease of testing
  D. Scalability
  E. Resiliency
  D. Scalability
  E. Resiliency

  ---

  distributed systems of native-cloud like functions that have a lot of benefit like Resiliency and availability Resiliency and availability refers to the ability of a system to continue operating, despite the failure or sub-optimal performance of some of its components. In the case of Oracle Functions: The control plane is a set of components that manages function definitions. The data plane is a set of components that executes functions in response to invocation requests. For resiliency and high availability, both the control plane and data plane components are distributed across different availability domains and fault domains in a region. If one of the domains ceases to be available, the components in the remaining domains take over to ensure that function definition management and execution are not disrupted. When functions are invoked, they run in the subnets specified for the application to which the functions belong. For resiliency and high availability, best practice is to specify a regional subnet for an application (or alternatively, multiple AD-specific subnets in different availability domains). If an availability domain specified for an application ceases to be available, Oracle Functions runs functions in an alternative availability domain. Concurrency and Scalability Concurrency refers to the ability of a system to run multiple operations in parallel using shared resources. Scalability refers to the ability of the system to scale capacity (both up and down) to meet demand. In the case of Functions, when a function is invoked for the first time, the function's image is run as a container on an instance in a subnet associated with the application to which the function belongs. When the function is executing inside the container, the function can read from and write to other shared resources and services running in the same subnet (for example, Database as a Service). The function can also read from and write to other shared resources (for example, Object Storage), and other Oracle Cloud Services. If Oracle Functions receives multiple calls to a function that is currently executing inside a running container, Oracle Functions automatically and seamlessly scales horizontally to serve all the incoming requests. Oracle Functions starts multiple Docker containers, up to the limit specified for your tenancy. The default limit is 30 GB of RAM reserved for function execution per availability domain, although you can request an increase to this limit. Provided the limit is not exceeded, there is no difference in response time (latency) between functions executing on the different containers.

• Question 40:

  Which concept is NOT related to Oracle Cloud Infrastructure Resource Manager?

  A. Job
  B. Stack
  C. Queue
  D. Plan
  C. Queue

  ---

  https://docs.cloud.oracle.com/en-us/iaas/Content/ResourceManager/Concepts/resourcemanager.htm Following are brief descriptions of key concepts and the main components of Resource Manager. CONFIGURATION Information to codify your infrastructure. A Terraform configuration can be either a solution or a file that you write and upload. JOB Instructions to perform the actions defined in your configuration. Only one job at a time can run on a given stack; further, you can have only one set of Oracle Cloud Infrastructure resources on a given stack. To provision a different set of resources, you must create a separate stack and use a different configuration. Resource Manager provides the following job types: Plan: Parses your Terraform configuration and creates an execution plan for the associated stack. The execution plan lists the sequence of specific actions planned to provision your Oracle Cloud Infrastructure resources. The execution plan is handed off to the apply job, which then executes the instructions. Apply. Applies the execution plan to the associated stack to create (or modify) your Oracle Cloud Infrastructure resources. Depending on the number and type of resources specified, a given apply job can take some time. You can check status while the job runs. Destroy. Releases resources associated with a stack. Released resources are not deleted. For example, terminates a Compute instance controlled by a stack. The stack's job history and state remain after running a destroy job. You can monitor the status and review the results of a destroy job by inspecting the stack's log files. Import State. Sets the provided Terraform state file as the current state of the stack. Use this job to migrate local Terraform environments to Resource Manager. STACK The collection of Oracle Cloud Infrastructure resources corresponding to a given Terraform configuration. Each stack resides in the compartment you specify, in a single region; however, resources on a given stack can be deployed across multiple regions. An OCID is assigned to each stack.