1z0-1104-25 Sample Questions Answers

To provision a compute instance named IAD-SP-PBT-1-VM-01 in the IAD-SP-PBT-PUBSNET-01 public subnet with the specified configuration (Oracle Linux 8 image, VM Standard A1 Flex shape), follow these steps based on the Oracle Cloud Infrastructure (OCI) Compute documentation.

Step-by-Step Solution for Task 5: Provision a Compute Instance

Log in to the OCI Console:

Use your OCI credentials to log in to the OCI Console (https://console.us-ashburn-1.oraclecloud.com ).

Ensure you have access to the assigned compartment.

Navigate to Compute Instances:

From the OCI Console, click the navigation menu (hamburger icon) on the top left.

UnderCompute, selectInstances.

Create a New Compute Instance:

Click theCreate Instancebutton.

Configure the Instance Details:

Name:Enter IAD-SP-PBT-1-VM-01.

Compartment:Select the assigned compartment.

Placement:Choose the availability domain (e.g., AD-1) based on your region’s availability.

Select the Image:

UnderImage and Shape, clickChange Image.

SelectOracle Linux 8from the platform images list.

ClickSelect Image.

Choose the Shape:

ClickChange Shape.

SelectVM Standardcategory.

ChooseA1 Flexfrom the shape options.

Configure the OCPUs (e.g., 1 OCPU) and memory (e.g., 6 GB) as needed for A1 Flex, then clickSelect Shape.

Configure Networking:

UnderNetworking, ensure theVirtual Cloud Networkis set to IAD-SP-PBT-VCN-01.

Set theSubnetto IAD-SP-PBT-PUBSNET-01 (public subnet with CIDR 10.0.1.0/24).

EnableAssign a public IPv4 addressto allow external connectivity.

Leave the default security list or assign a custom one if configured previously.

Set Up SSH Access:

UnderAdd SSH Keys, either:

Upload your public SSH key file, or

Paste your public SSH key manually.

This ensures you can access the instance via SSH.

Launch the Instance:

ClickCreateto provision the compute instance.

Wait for the instance to reach theRunningstate (this may take a few minutes).

Note the Instance OCID:

Once the instance is running, go to the instance details page for IAD-SP-PBT-1-VM-01.

Copy theOCIDdisplayed (e.g., ocid1.instance.oc1..).

OCID of the Created Compute Instance

Enter the OCID of the created compute instance (IAD-SP-PBT-1-VM-01) into the text box. The exact OCID will be available after Step 9 (e.g., ocid1.instance.oc1..).

Notes

Ensure the security zone IAD_SAP-PBT-CSZ-01 and its associated recipe IAD-SP-PBT-CSP-01 allow compute instance creation in the public subnet (10.0.1.0/24).

Verify network connectivity by testing SSH access using the public IP assigned to the instance.

Task 7: Verify the OCI Certificate with Load Balancer

Step 1: Obtain the Public IP of the Load Balancer

Log in to the OCI Console.

Navigate toNetworking>Load Balancers.

Click on PBT-CERT-LB-01.

Note thePublic IP Addressfrom the load balancer details page.

Step 2: Verify HTTPS Connection Using Cloud Shell

Open the OCI Cloud Shell from the top-right corner of the OCI Console.

Run the following command, replacing with the public IP you noted:

curl -k https://

Expected output: You should see the text "You are visiting Web Server 1" if the connection is successful. The -k flag ignores certificate validation errors (common during initial testing with self-signed or newly issued certificates).

If you encounter an error, ensure the load balancer is active, the listener is configured correctly, and the backend server (PBT-CERT-VM-01) is reachable.

Step 3: Verify in a Web Browser

Open a web browser.

Enter the following URL, replacing with the public IP you noted:

https://

If prompted with a certificate warning (e.g., due to a self-signed certificate or untrusted CA), accept the risk and proceed (click "Advanced" and "Proceed" or similar, depending on your browser).

Verify that the web page displays the text "You are visiting Web Server 1" from the index.html file created on PBT-CERT-VM-01.

Step 4: Troubleshoot (if needed)

If the text is not displayed:

Check the load balancer health status underBackend Sets>Healthin the OCI Console.

Ensure the security list PBT-CERT-LB-SL-01 allows port 443 and the compute instance security list allows port 80.

Verify the Apache service is running on PBT-CERT-VM-01 by SSHing in and running sudo systemctl status httpd.

Task 6: Create Load Balancer and Attach Certificate

Step 1: Create the Load Balancer

Log in to the OCI Console.

Navigate toNetworking>Load Balancers.

ClickCreate Load Balancer.

Enter the following details:

Name: PBT-CERT-LB-01

Compartment: Select your assigned compartment.

Load Balancer Type: SelectPublic.

Virtual Cloud Network: Select PBT-CERT-VCN-01.

Subnet: Select LB-Subnet-PBT-CERT-SNET-02.

Shape: Choose a shape (e.g., 10 Mbps, adjust based on needs).

ClickNext.

Leave backend sets and listeners as default for now (we’ll configure the listener next).

ClickCreate Load Balancerand wait for it to be provisioned.

Step 2: Create a Listener

Once the load balancer is created, go to theLoad Balancerspage and click on PBT-CERT-LB-01.

UnderResources, clickListeners.

ClickCreate Listener.

Enter the following details:

Name: PBT-CERT-LB_LTSN_01

Protocol: SelectHTTPS.

Port: Enter 443.

Certificate: ClickAdd Certificate, then select the PBT-CERT-01 certificate (e.g., PBT-CERT-0199008677labuser01) created in Task 5.

Leave other settings (e.g., SSL handling) as default unless specified.

ClickCreate.

Step 3: Configure the Backend Set

In the PBT-CERT-LB-01 details page, underResources, clickBackend Sets.

ClickCreate Backend Set(if not already created).

Enter basic details (e.g., name like PBT-CERT-BS-01).

Add a backend server:

IP Address: Use the private IP of PBT-CERT-VM-01 (find this in the instance details underCompute>Instances).

Port: 80 (HTTP, as configured on the web server).

Protocol: HTTP.

ClickCreate.

Step 4: Attach the Security List to the Subnet

Navigate toNetworking>Virtual Cloud Networks.

Select PBT-CERT-VCN-01 and clickSubnets.

Click on LB-Subnet-PBT-CERT-SNET-02.

UnderSecurity Lists, ensure PBT-CERT-LB-SL-01 is attached. If not:

ClickEdit.

Remove the default security list and add PBT-CERT-LB-SL-01.

ClickSave Changes.

Step 5: Verify the Configuration

Ensure the load balancer health status is OK (check underBackend Sets>Health).

Test by accessing https:// in a browser (replace with the public IP from the load balancer details).

Challenge 1: Integrate TLS Certificate Issued by the OCI Certificates Service with Load Balancer

Task 1: Create and Configure a Virtual Cloud Network (VCN)

Step 1: Create the Virtual Cloud Network (VCN)

Log in to the OCI Console.

Navigate toNetworking>Virtual Cloud Networks.

ClickCreate Virtual Cloud Network.

SelectVCN with Internet Connectivity(to include an Internet Gateway by default).

Enter the following details:

Name: PBT-CERT-VCN-01

Compartment: Select your assigned compartment.

VCN CIDR Block: 10.0.0.0/16

Leave other settings as default (e.g., create a new public subnet and route table).

ClickCreate Virtual Cloud Network. Wait for the VCN to be created.

Step 2: Create Subnet 1 (Compute-Subnet-PBT-CERT)

In the VCN details page for PBT-CERT-VCN-01, clickSubnetsunderResources.

ClickCreate Subnet.

Enter the following details:

Name: Compute-Subnet-PBT-CERT

Subnet Type: Regional

CIDR Block: 10.0.1.0/24

Route Table: Select the default route table created with the VCN.

Subnet Access: Public Subnet (to allow internet access).

DNS Resolution: Enabled.

ClickCreate.

Step 3: Create Subnet 2 (LB-Subnet-PBT-CERT-SNET-02)

In the VCN details page, clickSubnetsunderResources.

ClickCreate Subnet.

Enter the following details:

Name: LB-Subnet-PBT-CERT-SNET-02

Subnet Type: Regional

CIDR Block: 10.0.2.0/24

Route Table: Select the default route table created with the VCN.

Subnet Access: Public Subnet (to allow internet access for the load balancer).

DNS Resolution: Enabled.

ClickCreate.

Step 4: Verify Internet Gateway

In the VCN details page, underResources, clickInternet Gateways.

Ensure an Internet Gateway is listed and attached to PBT-CERT-VCN-01. If not created, clickCreate Internet Gateway, name it (e.g., PBT-CERT-IGW), and attach it.

Step 5: Configure Route Table

In the VCN details page, underResources, clickRoute Tables.

Select the default route table or create a new one named PBT-CERT-RT-01.

ClickAdd Route Rule. 4 -Destination CIDR Block: 0.0.0.0/0

Target Type: Internet Gateway

Target: Select the Internet Gateway created (e.g., PBT-CERT-IGW).

ClickAdd Route Ruleand save.

Step 6: Create Security List for Subnet 1 (Compute-Subnet-PBT-CERT)

In the VCN details page, underResources, clickSecurity Lists.

ClickCreate Security List.

Enter the following:

Name: PBT-CERT-CS-SL-01

Compartment: Your assigned compartment.

Add the following ingress rule:

Source CIDR: 0.0.0.0/0 (allow from any source, adjust as per security needs)

IP Protocol: TCP

Source Port Range: All

Destination Port Range: 22 (for SSH)

Allows: Traffic

ClickCreate.

Step 7: Create Security List for Subnet 2 (LB-Subnet-PBT-CERT-SNET-02)

In the VCN details page, underResources, clickSecurity Lists.

ClickCreate Security List.

Enter the following:

Name: PBT-CERT-LB-SL-01

Compartment: Your assigned compartment.

Add the following ingress rule:

Source CIDR: 0.0.0.0/0 (allow from any source, adjust as per security needs)

IP Protocol: TCP

Source Port Range: All

Destination Port Range: 443 (for HTTPS)

Allows: Traffic

ClickCreate.

Step 8: Retrieve and Enter VCN OCID

Go to the VCN details page for PBT-CERT-VCN-01.

Copy theOCIDfrom the VCN information section.

Enter the OCID in the provided text box.

Task 3: Create a Master Encryption Key

Step 1: Access the OCI Vault

Log in to the OCI Console.

Navigate toIdentity & Security>Vault.

Select the root compartment.

Locate and click on the vault named PBI_Vault_SP.

Step 2: Create the Master Encryption Key

In the PBI_Vault_SP vault details page, underResources, clickKeys.

ClickCreate Key.

Enter the following details:

Name: Replace with your username (e.g., if your username is 99008677-lab.user01, remove special characters like - and . to get 99008677labuser01, then use PBT-CERT-MEK-0199008677labuser01).

Key Shape: SelectRSAwith4096 bits.

Protection Mode: SelectHSM(Hardware Security Module) if available, orSoftwareif HSM is not required (based on vault capabilities).

Compartment: Ensure it’s set to the root compartment (where PBI_Vault_SP resides).

Leave other settings (e.g., key usage) as default unless specified.

ClickCreate Keyand wait for the key to be generated.

Step 3: Retrieve and Enter the OCID

After the key is created, go to theKeyssection under PBI_Vault_SP.

Click on the key named PBT-CERT-MEK-01 (e.g., PBT-CERT-MEK-0199008677labuser01).

Copy theOCID(a long string starting with ocid1.key., unique to your tenancy) from the key details page.

Enter the copied OCID exactly as it appears into the provided text box.

Task 4: Create a Certificate Authority (CA)

Create a certificate authority, where:

CA name: PBT-CERT-CA-01-

For example, if your username is 99008677-lab.user01, then the certificate authority name should be PBT-CERT-CA-01990086771abuser01

Ensure you eliminate special characters from the user name.

Common name: PBT-CERT-OCICA-01

Master Encryption Key: PBT-CERT-MEK-01 (created in the previous task)

Answer: See the solution below in Explanation.

Task 4: Create a Certificate Authority (CA)

Step 1: Access the OCI Vault

Log in to the OCI Console.

Navigate toIdentity & Security>Vault.

Select the root compartment.

Locate and click on the vault named PBI_Vault_SP.

Step 2: Create the Certificate Authority

In the PBI_Vault_SP vault details page, underResources, clickCertificate Authorities.

ClickCreate Certificate Authority.

Enter the following details:

Name: Replace with your username (e.g., if your username is 99008677-lab.user01, remove special characters like - and . to get 99008677labuser01, then use PBT-CERT-CA-0199008677labuser01).

Common Name: Enter PBT-CERT-OCICA-01.

Master Encryption Key: Select the PBT-CERT-MEK-01 key created in Task 3 (e.g., PBT-CERT-MEK-0199008677labuser01).

Subject: Leave as default or adjust (e.g., Organization, Country) if required by your setup.

Validity Period: Set as needed (e.g., 10 years), or use the default.

Compartment: Ensure it’s set to the root compartment.

ClickCreate Certificate Authorityand wait for the CA to be provisioned.

Step 3: Verify the Certificate Authority

After creation, go to theCertificate Authoritiessection under PBI_Vault_SP.

Confirm the CA PBT-CERT-CA-01 (e.g., PBT-CERT-CA-0199008677labuser01) is listed and its status is active.