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Oracle Cloud Infrastructure 2022 Developer Professional Sample Questions (Q29-Q34):

NEW QUESTION # 29
Which two are required to enable Oracle Cloud Infrastructure (OCI) Container Engine for Kubernetes (OKE) cluster access from the kubect1 CLI?

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

Answer: A,C

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 # 30
You want to push a new image in the Oracle Cloud Infrastructure (OCI) Registry. Which two actions do you need to perform?

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

Answer: A,C

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 # 31
A pod security policy (PSP) is implemented in your Oracle Cloud Infrastructure Container Engine for Kubernetes cluster Which rule can you use to prevent a container from running as root using PSP?

• A. MustRunAsNonRoot
• B. forbiddenRoot
• C. RunOnlyAsUser
• D. NoPrivilege

Answer: A

Explanation:
What is a Pod Security Policy?
A Pod Security Policy is a cluster-level resource that controls security sensitive aspects of the pod specification. The PodSecurityPolicy objects define a set of conditions that a pod must run with in order to be accepted into the system, as well as defaults for the related fields. They allow an administrator to control the following:
Privilege Escalation
These options control the allowPrivilegeEscalation container option. This bool directly controls whether the no_new_privs flag gets set on the container process. This flag will prevent setuid binaries from changing the effective user ID, and prevent files from enabling extra capabilities (e.g. it will prevent the use of the ping tool). This behavior is required to effectively enforce MustRunAsNonRoot.
example:
# Require the container to run without root privileges.
rule: 'MustRunAsNonRoot'
Reference:
https://kubernetes.io/docs/concepts/policy/pod-security-policy/

NEW QUESTION # 32
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)?

• A. 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.
• B. Create an OCI IAM policy with the appropriate permissions to access the required OCI services and assign the policy to the on-premises Linux server.
• C. 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.
• D. 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, add the user name and password to a file used by Node.js authentication.

Answer: C

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 # 33
You are building a container image and pushing it to the Oracle Cloud Infrastructure Registry (OCIR). You need to make sure that these get deleted from the repository.
Which action should you take?

• A. Edit the tenancy global retention policy.
• B. In your compartment, write a policy to limit access to the specific repository.
• C. Create a group and assign a policy to perform lifecycle operations on images.
• D. Set global policy of image retention to "Retain All Images".

Answer: A

Explanation:
Deleting an Image
When you no longer need an old image or you simply want to clean up the list of image tags in a repository, you can delete images from Oracle Cloud Infrastructure Registry.
Your permissions control the images in Oracle Cloud Infrastructure Registry that you can delete. You can delete images from repositories you've created, and from repositories that the groups to which you belong have been granted access by identity policies. If you belong to the Administrators group, you can delete images from any repository in the tenancy.
Note that as well deleting individual images , you can set up image retention policies to delete images automatically based on selection criteria you specify (see Retaining and Deleting Images Using Retention Policies).
Note:
In each region in a tenancy, there's a global image retention policy. The global image retention policy's default selection criteria retain all images so that no images are automatically deleted. However, you can change the global image retention policy so that images are deleted if they meet the criteria you specify. A region's global image retention policy applies to all repositories in the region, unless it is explicitly overridden by one or more custom image retention policies.
You can set up custom image retention policies to override the global image retention policy with different criteria for specific repositories in a region. Having created a custom image retention policy, you apply the custom retention policy to a repository by adding the repository to the policy. The global image retention policy no longer applies to repositories that you add to a custom retention policy.
https://docs.cloud.oracle.com/en-us/iaas/Content/Registry/Tasks/registrymanagingimageretention.htm#:~:text=In%20each%20region%20in%20a,meet%20the%20criteria%20you%20specify.

NEW QUESTION # 34
......

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