You are part of a project team working in the development environment created in Oracle Cloud Infrastructure (OCI). You realize that the CIDR block specified for one of the subnets in a Virtual Cloud Network (VCN) is not correct and want to delete the subnet. While deleting you get an error indicating that there are still resources that you must delete first. The error includes the OCID of the VNIC that is in the subnet. Which of the following action you will take to troubleshoot this issue?
A. Use OCI CLI to call "network vnic" and "compute vnic-attachment" operations to find out the parent resource of the VNIC.
B. Use OCI CLI to delete the VNIC first and then delete the subnet.
C. Use OCI CLI to delete the subnet using -force option.
D. Copy and paste OCID of the VNIC in the search box of the OCI Console to find out the parent resource of the VNIC.
You are a solution architect working with a startup that has decided to move their workload to Oracle Cloud Infrastructure. Since their workload is small, upon architecting, you decide its sufficient to use 8 compute instances to run their workload. The company wants to use a common storage for their instances. So, you propose the idea of attaching a block volume to multiple instances to provide a common storage. Which of the below option is NOT true for such a solution?
A. If the block volume is already attached to an instance as read/write non-shareable you can't attach it to another instance until you detach it from the first instance.
B. Block volumes attached as read-only are configured as shareable by default.
C. You can delete a block volume from one instance without detaching it from all other instances there by keeping other instance's storage intact.
D. Once you attach a block volume to an instance as read-only, it can only be attached to other instances as read-only.
You have been asked to implement a bespoke financial application in Oracle Cloud Infrastructure using virtual machine instances controlled by Autoscaling across multiple Availability Domains. The application stores transaction logs, intermediate transaction data, and audit data and needs to store this on a persistent, durable data store accessible from all of the application servers. The application requires the file system to be mounted in the /audit folder on the Linux file system. The system needs to tolerate the failure of two or more Fault Domains and still maintain data integrity. The solution should be as low maintenance as possible. What storage architecture should you suggest?
A. Use locally attached NVMe instances and configure RAID 0 replication between servers.
B. Implement a single instance and install an NFS server, configure and create an NFS share, and mount this as /audit on the application instances.
C. Store the data on Oracle Object Storage mounted at the /audit mount point on all the Linux instances using the default mount options.
D. Use File Storage Service(FSS). Configure FSS to operate from all Availability Domains the application servers operate in and mount the file system in the /audit folder.
You are trying to troubleshoot the configuration of your Oracle Cloud Infrastructure (OCI) Load Balancing service. You have a backend HTTP service for which you have created a backend set in the load balancer. You have configured health checks for the backend set. Although the health checks appear good, customers sometimes experience transaction failures. Which of the following options will definitely lead to this problem?
A. You are NOT using regional subnets in your Virtual Cloud Network. With Availability Domain (AD) specific subnet. the compute instances of the backend service running in the subnet have issues when the AD is down.
B. You are using OCI Domain Name System. You have misconfigured the 'A' record with the wrong IP address leading to requests not getting routed correctly.
C. You are using iSCI for block volume attachment to the compute instances in your backed HTTP service. TCP/IP configuration of your block volume attachment is not configured correctly, leading to issues in your backend service.
D. You are running a TCP-level health check against your HTTP service. The TCP handshake can succeed and indicate that the service is up even when the HTTP service has issues.
You are working as a solution architect for a customer in Frankfurt, which uses multiple compute instance VMs spread among three Availability Domains in the Oracle Cloud Infrastructure (OCI) eu- frankfurt-1 region. The compute instances do not have public IP addresses and are running in private subnets inside a Virtual Cloud Network (VCN). You have set up OCI Autoscaling feature for the compute instances, but find out that instances cannot be auto scaled. You have enabled monitoring on the instances. What could be wrong in this situation?
A. You need to assign a reserved public IP address to the compute instances.
B. You need to set up a Service Gateway to send metrics to the OCI Monitoring service.
C. Autoscaling only works for instances with public IP addresses.
D. Autoscaling only works with single availability domains.
You are creating an Oracle Cloud Infrastructure Dynamic Group. To determine the members of this group
you are defining a set of matching rules.
Which of the following are the supported variables to define conditions in the matching rules? (Choose
Two)
A. instance.compartment.id -the OCID of the compartment where the instance resides.
B. instance.tenancy.id -the OCID of the tenancy where the instance resides.
C. tag.
D. iam.policy.id - the OCID of the IAM policy to apply to the group.
You are building a demo for a customer that showcases Oracle Cloud Infrastructure (OCI) Events service and Oracle Functions. You plan to create an event every time an image is uploaded to an OCI Object Storage bucket. You have also created a function that is listening to the event and processes the image for face recognition. Choose the two actions from below that are NOT required to run the demo successfully.
A. You must specify an action type while creating an Event service and specify the function you want to trigger.
B. Creating an event rule is not permitted for OCI Object storage.
C. The function must be deployed only to Oracle Kubernetes Engine (OKE).
D. You have to enable Object Storage buckets to emit events for state changes.
E. You must deploy the function that does facial recognition for the demo to work.
An online gaming application is deployed to multiple Availability Domains in the Oracle Cloud Infrastructure (OCI) us-ashburn-1 region. Considering the high volume of traffic that the gaming application handles, the company has hired you to ensure that the data stored by the application is scalable, highly available, and disaster resilient. In the event of failure, the Recovery Time Objective (RTO) and Recovery Point Objective (RPO) must be less than 2 hours. Which Disaster Recovery strategy should be used to achieve the RTO and RPO requirements in the event of a system failure?
A. Configure hourly block volumes backups using the OCI Command Line Interface (CLI).
B. Create a user defined backup policy with a schedule of generating daily backups for block volumes.
C. Configure hourly block volumes backups through the OCI Storage Gateway service.
D. Create a user defined backup policy with a schedule of generating hourly backups for block volumes.
A fast growing E-commerce company has deployed their online shopping application on Oracle Cloud Infrastructure. The application was deployed on compute instances with Autoscaling configuration for application servers fronted by a load balancer and OCI Autonomous Transaction Processing (ATP) in the backend. In order to promote their e-commerce platform 50% discount was announced on all the products for a limited period. During the day 1 of promotional period it was observed that the application is running slow and company's hotline is flooded with complaints. What could be two possible reasons for this situation?
A. The health check on some of the backend servers has failed and the load balancer has taken those servers temporarily out of rotation.
B. As part of Autoscaling, the load balancer shape has dynamically changed to a larger shape to handle more incoming traffic and the system was slow for a short time during this change.
C. The health check on some of the backend servers has failed and the load balancer was rebooting these servers.
D. Autoscaling has already scaled to the maximum number of instances specified in the configuration and there is no room for scaling further.
You are tasked with backing up your data using Oracle Cloud Infrastructure Block Volume service. When you are finalizing your block volume backup schedule, which of the following two are valid considerations for your backup plan? (Choose Two)
A. Number of stored backups: How many backups you need to keep available and the deletion schedule for those you no longer need.
B. Governance: Tagging of backups so you can capture backup related API calls through the Audit service.
C. Frequency: How often you want to back up your data.
D. Location: Determine the Object Store Bucket where the backups will be stored.
E. Encryption: Whether to use your own key to encrypt your volume backups.
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