You set up a bastion host in your VCN to only allow your IP address (140.19.2.140) to establish SSH connections to your Compute Instances that are deployed in a private subnet. The Compute Instances have an attached Network Security Group with a Source Type: Network Security Group (NSG), Source NSG: NSG-050504. To secure the bastion host, you added the following ingress rules to its Network Security Group:
However, after checking the bastion host logs, you discovered that there are IP addresses other than your own that can access your bastion host.
What is the root cause of this issue? (Choose the best answer.)
You created an Oracle Linux compute instance through the Oracle Cloud Infrastructure (OCI) management console then immediately realize you forgot to add an SSH key file. You notice that OCI compute service provides instance console connections that supports adding SSH keys for a running instance. Hence, you created the console connection for your Linux server and activated it using the connection string provided. However, now you get prompted for a username and password to login.
What option should you recommend to add the SSH key to your running instance, while minimizing the administrative overhead? (Choose the best answer.)
If you created an instance without an SSH key, you can use the serial console to boot into maintenance mode and add or reset the SSH key for the opc user or reset the password for the opc user. Alternately, you can stop the instance, attach the boot volume to a new instance, and configure SSH on the new instance.
https://docs.oracle.com/en-us/iaas/Content/Compute/Tasks/accessinginstance.htm
You have created a geolocation steering policy in the Oracle Cloud Infrastructure (OCI) Traffic Management service, with this configuration:
What happens to requests that originate in Africa? (Choose the best answer.)
This policy currently has no global catch-all. No global catch-all means that queries not matching any of the above rules will receive a random answer. Global Catche-all need to set up if the traffic does not meet any condition in the pool and you still want to serve the request. Default is serve randomly.
https://www.oracle.com/a/ocom/docs/cloud/traffic-management-100.pdf
The boot volume on your Oracle Linux instance has run out of space. Your application has crashed due to a lack of swap space, forcing you to increase the size of the boot volume.
Which step should NOT be included in the process used to solve the issue? (Choose the best answer.)
You are asked to deploy a new application that has been designed to scale horizontally. The business stakeholders have asked that the application be deployed in us-phoenix-1.
Normal usage requires 2 OCPUs. You expect to have few spikes during the week, that will require up to 4 OCPUs, and a major usage uptick at the end of each month that will require 8 OCPUs.
What is the most cost-effective approach to implement a highly available and scalable solution? (Choose the best answer.)
