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Oracle 1z0-1084-22 Exam Syllabus Topics:

Topic	Details
Topic 1	Create integration between systems using OCI streaming service Explain the microservices architecture and discuss the design methodology of microservices
Topic 2	Build event-driven serverless applications using OCI event service Explain DevOps and discuss the role of container orchestration
Topic 3	Apply security measures to overcome challenges with cloud native development Explain docker and the concepts around its architecture and components
Topic 4	Discuss various strategies for testing cloud native applications Cloud Native Applications And Containerization
Topic 5	Monitoring & Troubleshooting Cloud Native Applications Perform Tasks around Monitoring, Logging, and Tracing
Topic 6	Utilize OCI Monitoring service to view metrics Explain the fundamentals of cloud native and discuss the key pillars of cloud native development

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Oracle Cloud Infrastructure 2022 Developer Professional Sample Questions (Q19-Q24):

NEW QUESTION # 19
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 API signing key to complete the authentication via Docker CLI.
• C. Assign an OCI defined tag via OCI CLI to the image.
• D. Generate an OCI tag namespace in your repository.
• E. Generate an auth token to complete the authentication via Docker CLI.

Answer: A,E Explanation:
Pushing Images Using the 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 example, assume you have a local image named acme-web-app:latest. Let's say you want to push this image to Oracle Cloud Infrastructure Registry with a name of acme-web-app:version2.0.test into a repository called project01 in the Ashburn region of the acme-dev tenancy. When you use the docker tag command, you'd name the new image with the fully qualified path to its destination, in the format <region-key>.ocir.io/<tenancy-namespace>/<repo-name>/<image-name>:<tag>. So in this case, you'd name the new image iad.ocir.io/ansh81vru1zp/project01/acme-web-app:version2.0.test. Subsequently, when you use the docker push command, the image's name ensures it is pushed to the correct destination.
To push images to Oracle Cloud Infrastructure Registry using the Docker CLI:
If you already have an auth token, go to the next step. Otherwise:

On the Auth Tokens page, click Generate Token.
Enter a friendly description for the auth token. Avoid entering confidential information.
Click Generate Token. The new auth token is displayed.
Copy the auth token immediately to a secure location from where you can retrieve it later, because you won't see the auth token again in the Console.
Close the Generate Token dialog.
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/Registry/Tasks/registrypushingimagesusingthedockercli.htm
NEW QUESTION # 20
You are processing millions of files in an Oracle Cloud Infrastructure (OCI) Object Storage bucket. Each time a new file is created, you want to send an email to the customer and create an order in a database. The solution should perform and minimize cost, Which action should you use to trigger this email?

• A. Use OCI Events service and OCI Notification service to send an email each time a file is created.
• B. Schedule a cron job that monitors the OCI Object Storage bucket and emails the customer when a new file is created.
• C. Schedule an Oracle Function that checks the OCI Object Storage bucket every minute and emails the customer when a file is found.
• D. Schedule an Oracle Function that checks the OCI Object Storage bucket every second and emails the customer when a file is found.

Answer: A Explanation:
Oracle Cloud Infrastructure Events enables you to create automation based on the state changes of resources throughout your tenancy. Use Events to allow your development teams to automatically respond when a resource changes its state.
Here are some examples of how you might use Events:
Send a notification to a DevOps team when a database backup completes.
Convert files of one format to another when files are uploaded to an Object Storage bucket.
You can only deliver events to certain Oracle Cloud Infrastructure services with a rule. Use the following services to create actions:
Notifications
Streaming
Functions

References:
https://docs.cloud.oracle.com/en-us/iaas/Content/Events/Concepts/eventsoverview.htm
https://docs.cloud.oracle.com/en-us/iaas/Content/Notification/Concepts/notificationoverview.htm
NEW QUESTION # 21
Which two are required to enable Oracle Cloud Infrastructure (OCI) Container Engine for Kubernetes (OKE) cluster access from the kubect1 CLI?

• A. OCI Identity and Access Management Auth Token
• B. An SSH key pair with the public key added to cluster worker nodes
• C. Install and configure the OCI CLI
• D. Tiller enabled on the OKE cluster
• E. A configured OCI API signing key pair

Answer: C,E Explanation:
Setting Up Local Access to Clusters
To set up a kubeconfig file to enable access to a cluster using a local installation of kubectl and the Kubernetes Dashboard:
Step 1: Generate an API signing key pair
Step 2: Upload the public key of the API signing key pair
Step 3: Install and configure the Oracle Cloud Infrastructure CLI
Step 4: Set up the kubeconfig file
Step 5: Verify that kubectl can access the cluster
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/ContEng/Tasks/contengdownloadkubeconfigfile.htm
NEW QUESTION # 22
Your Oracle Cloud Infrastructure Container Engine for Kubernetes (OKE) administrator has created an OKE cluster with one node pool in a public subnet. You have been asked to provide a log file from one of the nodes for troubleshooting purpose.
Which step should you take to obtain the log file?

• A. ssh into the node using public key.
• B. ssh into the nodes using private key.
• C. It is impossible since OKE is a managed Kubernetes service.
• D. Use the username open and password to login.

Answer: B Explanation:
Kubernetes cluster is a group of nodes. The nodes are the machines running applications. Each node can be a physical machine or a virtual machine. The node's capacity (its number of CPUs and amount of memory) is defined when the node is created. A cluster comprises:
- one or more master nodes (for high availability, typically there will be a number of master nodes)
- one or more worker nodes (sometimes known as minions)
Connecting to Worker Nodes Using SSH
If you provided a public SSH key when creating the node pool in a cluster, the public key is installed on all worker nodes in the cluster. On UNIX and UNIX-like platforms (including Solaris and Linux), you can then connect through SSH to the worker nodes using the ssh utility (an SSH client) to perform administrative tasks.
Note the following instructions assume the UNIX machine you use to connect to the worker node:
Has the ssh utility installed.
Has access to the SSH private key file paired with the SSH public key that was specified when the cluster was created.
How to connect to worker nodes using SSH depends on whether you specified public or private subnets for the worker nodes when defining the node pools in the cluster.
Connecting to Worker Nodes in Public Subnets Using SSH
Before you can connect to a worker node in a public subnet using SSH, you must define an ingress rule in the subnet's security list to allow SSH access. The ingress rule must allow access to port 22 on worker nodes from source 0.0.0.0/0 and any source port To connect to a worker node in a public subnet through SSH from a UNIX machine using the ssh utility:
1- Find out the IP address of the worker node to which you want to connect. You can do this in a number of ways:
Using kubectl. If you haven't already done so, follow the steps to set up the cluster's kubeconfig configuration file and (if necessary) set the KUBECONFIG environment variable to point to the file. Note that you must set up your own kubeconfig file. You cannot access a cluster using a kubeconfig file that a different user set up. See Setting Up Cluster Access. Then in a terminal window, enter kubectl get nodes to see the public IP addresses of worker nodes in node pools in the cluster.
Using the Console. In the Console, display the Cluster List page and then select the cluster to which the worker node belongs. On the Node Pools tab, click the name of the node pool to which the worker node belongs. On the Nodes tab, you see the public IP address of every worker node in the node pool.
Using the REST API. Use the ListNodePools operation to see the public IP addresses of worker nodes in a node pool.
2- In the terminal window, enter ssh [email protected]<nodeipaddress> to connect to the worker node, where <nodeipaddress> is the IP address of the worker node that you made a note of earlier. For example, you might enter ssh [email protected]
Note that if the SSH private key is not stored in the file or in the path that the ssh utility expects (for example, the ssh utility might expect the private key to be stored in ~/.ssh/idrsa), you must explicitly specify the private key filename and location in one of two ways:
Use the -i option to specify the filename and location of the private key. For example, ssh -i ~/.ssh/mykeys/myhostkeyfilename [email protected] Add the private key filename and location to an SSH configuration file, either the client configuration file (~/.ssh/config) if it exists, or the system-wide client configuration file (/etc/ssh/sshconfig). For example, you might add the following:
Host 192.0.2.254 IdentityFile ~/.ssh/mykeys/myhostkeyfilename
For more about the ssh utility's configuration file, enter man sshconfig Note also that permissions on the private key file must allow you read/write/execute access, but prevent other users from accessing the file. For example, to set appropriate permissions, you might enter chmod 600 ~/.ssh/mykeys/myhostkey_filename. If permissions are not set correctly and the private key file is accessible to other users, the ssh utility will simply ignore the private key file.
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/ContEng/Tasks/contengconnectingworkernodesusingssh.htm
NEW QUESTION # 23
Given a service deployed on Oracle Cloud Infrastructure Container Engine far Kubernetes (OKE), which annotation should you add in the sample manifest file below to specify a 400 Mbps load balancer?

• A. service.beta.kubernetes.io/oci-load-balancer-shape: 400Mbps
• B. service.beta.kubernetes.io/oci-load-balancer-size: 400Mbps
• C. service.beta.kubernetes.io/oci-load-balancer-value: 400Mbps
• D. service, beta, kubernetes . io/oci-load-balancer-kind: 400Mbps

Answer: A Explanation:
Overview of Load Balancing:
SHAPE
A template that determines the load balancer's total pre-provisioned maximum capacity (bandwidth) for ingress plus egress traffic. Available shapes include 10Mbps, 100 Mbps, 400 Mbps, and 8000 Mbps.
oci-load-balancer-shape: A template that determines the load balancer's total pre-provisioned maximum capacity (bandwidth) for ingress plus egress traffic. Available shapes include 100Mbps, 400Mbps, and 8000Mbps. Cannot be modified after load balancer creation.
All annotations are prefixed with service.beta.kubernetes.io/. For example:
kind: Service
apiVersion: v1
metadata:
name: nginx-service
annotations:
service.beta.kubernetes.io/oci-load-balancer-shape: "400Mbps"
service.beta.kubernetes.io/oci-load-balancer-subnet1: "ocid..."
service.beta.kubernetes.io/oci-load-balancer-subnet2: "ocid..."
spec:
...
References:
https://docs.cloud.oracle.com/en-us/iaas/Content/Balance/Concepts/balanceoverview.htm
https://github.com/oracle/oci-cloud-controller-manager/blob/master/docs/load-balancer-annotations.md
NEW QUESTION # 24
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