1Z0-1084-22 Online Practice Questions and Answers

Correct Answer: DE

Applications in the Function services In Oracle Functions, an application is:

1.

a logical grouping of functions

2.

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

When you define an application in Oracle Functions, you specify the subnets in which to run the functions in the application.

Correct Answer: B

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.

Correct Answer: A

CAP THEOREM

"CONSISTENCY, AVAILABILITY and PARTITION TOLERANCE are the features that we want in our distributed system together"

Of three properties of shared-data systems (Consistency, Availability and tolerance to network Partitions) only two can be achieved at any given moment in time.

Correct Answer: A

The serverless and elastic architecture of Oracle Functions means there's no infrastructure administration or software administration for you to perform. You don't provision or maintain compute instances, and operating system software patches and upgrades are applied automatically. Oracle Functions simply ensures your app is highly-available, scalable, secure, and monitored. With Oracle Functions, you can write code in Java, Python, Node, Go, and Ruby (and for advanced use cases, bring your own Dockerfile, and Graal VM). You can then deploy your code, call it directly or trigger it in response to events, and get billed only for the resources consumed during the execution.

Correct Answer: B

1.

Create Notifications Topic and Subscription If a suitable Notifications topic doesn't already exist, then you must log in to the Console as a tenancy administrator and create it. Whether you use an existing topic or create a new one, add an email address as a subscription so that you can monitor that email account for notifications

2.

Using the Console to Create a Rule Use the Console to create a rule with a pattern that matches bucket creation events emitted by Object Storage. Specify the Notifications topic you created as an action to deliver matching events. To test your rule, create a bucket. Object Storage emits an event which triggers the action. Check the email specified in the subscription to receive your notification

https://docs.cloud.oracle.com/en-us/iaas/Content/Events/Concepts/eventsgetstarted.htm https://docs.cloud.oracle.com/en-us/iaas/Content/Events/Concepts/filterevents.htm

Correct Answer: D

Oracle Cloud Infrastructure Web Application Firewall (WAF) is a cloud-based, Payment Card Industry (PCI) compliant, global security service that protects applications from malicious and unwanted internet traffic. WAF can protect any

internet facing endpoint, providing consistent rule enforcement across a customer's applications.

WAF provides you with the ability to create and manage rules for internet threats including Cross- Site Scripting (XSS), SQL Injection and other OWASP-defined vulnerabilities. Unwanted bots can be mitigated while tactically allowed desirable

bots to enter. Access rules can limit based on geography or the signature of the request.

Correct Answer: D

In the API Gateway service, there are two types of policy:

-

a request policy describes actions to be performed on an incoming request from a caller before it is sent to a back end

-

a response policy describes actions to be performed on a response returned from a back end before it is sent to a caller

You can use request policies to:

-limit the number of requests sent to back-end services

-enable CORS (Cross-Origin Resource Sharing) support

-provide authentication and authorization

Correct Answer: C

Invoking a function returns a FunctionInvokeSubnetNotAvailable message and a 502 error (due to a DHCP Options issue)

When you invoke a function that you've deployed to Oracle Functions, you might see the following error message:

{"code":"FunctionInvokeSubnetNotAvailable","message":"dhcp options ocid1.dhcpoptions........ does not exist or Oracle Functions is not authorized to use it"}

Fn: Error invoking function. status: 502 message: dhcp options ocid1.dhcpoptions........ does not exist or Oracle Functions is not authorized to use it If you see this error:

Double-check that a policy has been created to give Oracle Functions access to network resources.

Service Access to Network Resources

When Oracle Functions users create a function or application, they have to specify a VCN and a subnet in which to create them. To enable the Oracle Functions service to create the function or application in the specified VCN and subnet,

you must create an identity policy to grant the Oracle Functions service access to the compartment to which the network resources belong. To create a policy to give the Oracle Functions service access to network resources:

Log in to the Console as a tenancy administrator.

Create a new policy in the root compartment:

Open the navigation menu. Under Governance and Administration, go to Identity and click Policies. Follow the instructions in To create a policy, and give the policy a name (for example, functions- service-network-access).

Specify a policy statement to give the Oracle Functions service access to the network resources in the compartment:

Allow service FaaS to use virtual-network-family in compartment For example:

Allow service FaaS to use virtual-network-family in compartment acme-network Click Create.

Double-check that the set of DHCP Options in the VCN specified for the application still exists.

Correct Answer: D

After a new version of Kubernetes has been released and when Container Engine for Kubernetes supports the new version, you can use Container Engine for Kubernetes to upgrade master nodes running older versions of Kubernetes. Because Container Engine for Kubernetes distributes the Kubernetes Control Plane on multiple Oracle-managed master nodes (distributed across different availability domains in a region where supported) to ensure high availability, you're able to upgrade the Kubernetes version running on master nodes with zero downtime. Having upgraded master nodes to a new version of Kubernetes, you can subsequently create new node pools running the newer version. Alternatively, you can continue to create new node pools that will run older versions of Kubernetes (providing those older versions are compatible with the Kubernetes version running on the master nodes). Note that you upgrade master nodes by performing an `in-place' upgrade, but you upgrade worker nodes by performing an `out-of-place' upgrade. To upgrade the version of Kubernetes running on worker nodes in a node pool, you replace the original node pool with a new node pool that has new worker nodes running the appropriate Kubernetes version. Having 'drained' existing worker nodes in the original node pool to prevent new pods starting and to delete existing pods, you can then delete the original node pool.

Correct Answer: C