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Oracle Cloud Infrastructure 2022 Developer Professional Sample Questions (Q30-Q35):NEW QUESTION # 30
Which concepthe following steps reference Console instructionsCloud Infrastructure Resource Manager?
Answer: B
Explanation:
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.
the following steps reference Console instructions
Create a Terraform configuration.
Create a stack.
Run a plan job, which produces an execution plan.
Review the execution plan.
If changes are needed in the execution plan, update the configuration and run a plan job again.
Run an apply job to provision resources.
Review state file and log files, as needed.
You can optionally reapply your configuration, with or without making changes, by running an apply job again.
Optionally, to release the resources running on a stack, run a destroy job.
NEW QUESTION # 31
Which two handle Oracle Functions authentication automatically?
Answer: C,E
Explanation:
If you use the Fn Project CLI or the Oracle Cloud Infrastructure CLI to invoke a function, authentication is handled for you. See Using the Fn Project CLI to Invoke Functions and Using the Oracle Cloud Infrastructure CLI to Invoke Functions.
If you use an Oracle Cloud Infrastructure SDK to invoke a function, you can use the SDK to handle authentication. See Using SDKs to Invoke Functions.
If you make a signed HTTP request to a function's invoke endpoint, you'll have to handle authentication yourself by including a signature and the OCID of the compartment to which the function belongs in the request header Fn Project CLI you can create an Fn Project CLI Context to Connect to Oracle Cloud Infrastructure and specify --provider oracle This option enables Oracle Functions to perform authentication and authorization using Oracle Cloud Infrastructure request signing, private keys, user groups, and policies that grant permissions to those user groups.
References:
https://blogs.oracle.com/developers/oracle-functions-invoking-functions-automatically-with-cloud-events
https://docs.cloud.oracle.com/en-us/iaas/Content/Functions/Tasks/functionsinvokingfunctions.htm
NEW QUESTION # 32
You encounter an unexpected error when invoking the Oracle Function named "myfunction" in application "myapp". Which can you use to get more information on the error?
Answer: D
Explanation:
Troubleshooting Oracle Functions
If you encounter an unexpected error when using an Fn Project CLI command, you can find out more about the problem by starting the command with the string DEBUG=1 and running the command again. For example:
$ DEBUG=1 fn invoke helloworld-app helloworld-func
Note that DEBUG=1 must appear before the command, and that DEBUG must be in upper case.
NEW QUESTION # 33
What are two of the main reasons you would choose to implement a serverless architecture?
Answer: A,D
Explanation:
Serverless computing refers to a concept in which the user does not need to manage any server infrastructure at all. The user does not run any servers, but instead deploys the application code to a service provider's platform. The application logic is executed, scaled, and billed on demand, without any costs to the user when the application is idle.
Benefits of the Serverless or FaaS
So far almost every aspect of Serverless or FaaS is discussed in a brief, so let's talk about the pros and cons of using Serverless or FaaS Reduced operational and development cost Serverless or FaaS offers less operational and development cost as it encourages to use third-party services like Auth, Database and etc.
Scaling
Horizontal scaling in Serverless or FaaS is completely automatic, elastic and managed by FaaS provider. If your application needs more requests to be processed in parallel the provider will take of that without you providing any additional configuration.
References:
https://medium.com/@avishwakarma/serverless-or-faas-a-deep-dive-e67908ca69d5
https://qvik.com/news/serverless-faas-computing-costs/
https://pages.awscloud.com/rs/112-TZM-766/images/PTNR_gsc-serverless-ebook_Feb-2019.pdf
NEW QUESTION # 34
A programmer Is 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)?
Answer: D
Explanation:
Set up an Oracle Cloud Infrastructure API Signing Key for Use with Oracle Functions:
Before using Oracle Functions, you have to set up an Oracle Cloud Infrastructure API signing key.
The instructions in this topic assume:
- you are using Linux
For more information and other options, see Required Keys and OCIDs.
The instructions below describe how to create a new ~/.oci directory, how to generate a new private key file and public key file in that ~/.oci directory, how to upload the public key to Oracle Cloud Infrastructure to create a new API signing key, and how to obtain a fingerprint for the public API key. Be aware that instructions and examples elsewhere in this documentation assume the ~/.oci directory exists and contains the private and public key files.
To set up an API signing key:
Log in to your development environment as a functions developer.
In a terminal window, confirm that the ~/.oci directory does not already exist. For example, by entering:
ls ~/.oci
Assuming the ~/.oci directory does not already exist, create it. For example, by entering:
mkdir ~/.oci
Generate a private key encrypted with a passphrase that you provide by entering:
$ openssl genrsa -out ~/.oci/<private-key-file-name>.pem -aes128 2048
where <private-key-file-name> is a name of your choice for the private key file (for example, john_api_key_private.pem).
For example:
$ openssl genrsa -out ~/.oci/john_api_key_private.pem -aes128 2048
Generating RSA private key, 2048 bit long modulus
....+++
....................................................................+++ e is 65537 (0x10001) Enter pass phrase for /Users/johndoe/.oci/john_api_key_private.pem:
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/Functions/Tasks/functionssetupapikey.htm
NEW QUESTION # 35
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