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Worksheets997_5
Total questions: 22
Worksheet time: 13mins
Which of the following is NOT a good use case for the Oracle Cloud Infrastructure (OCI) Streaming service?
Meeting compliance requirements for data to remain unchanged over a long time, so that it can be retrieved for audit purposes.
Messaging with a pull-based communication model and the ability to feed multiple consumers with the same data independently.
Ingesting metric and log data to help make critical operational data more quickly available for indexing, analysis, and visualization.
Providing a unified entry point for cloud components to report their life cycle events for audit, accounting, and related activities.
Which of the following is NOT a good use case for using the functionality available in the Oracle Cloud Infrastructure (OCI) Events service?
Publish all events in a specific compartment to Oracle Streaming service for later analysis.
Triggers Function using Oracle Functions when new files are uploaded in an OCI Object Storage bucket.
Publish a notification when long lived tasks complete, such as OCI Autonomous Database backup completion.
Capture Monitoring Alarms and invoke Autoscaling of compute instances.
Trigger a notification when a function completes its execution.
You have deployed a multi-tier application with multiple compute instances in Oracle Cloud Infrastructure. You want to back up these volumes and have decided to use 'Volume Groups' feature. The Block volume and Compute instances exist in different compartments within your tenancy. Periodically, a few child compartments are moved under different parent compartments, and you notice that sometimes volume group backup fails.
What could be the cause?
The Identity and Access Management policy allowing backup failed to move when the compartment was moved.
You are exceeding your volume group backup quota configured.
You have the same block volume attached to multiple compute instances; if these compute instances are in different compartments then all concerned compartments must be moved at the same time.
A compute instance with multiple block volumes attached cannot move when a compartment is moved.
A global media organization is working on a project which lets users upload their videos to the site. After upload is complete, the video should be automatically processed by an Al algorithm. The algorithm will try to recognize certain actions in the videos so that it can be used to show related advertisements in future. The development team wants to focus on writing Al code and not worry about underlying infrastructure for high availability, scalability, security and monitoring.
Which Oracle Cloud Infrastructure (OCI) services would meet these requirements?
OCI Object Storage, OCI Events service and OCI Functions.
Oracle Container Engine for Kubernetes, OCI Notifications and OCI Object Storage.
OCI Events, Oracle Container Engine for Kubernetes and OCI Digital Assistant.
OCI Resource Manager, OCI Functions and OCI Events service.
You have decided to migrate your application to Oracle Cloud Infrastructure and use Oracle Functions to deploy your microservices.
Which monitoring metrics are available to help you calculate your total cost for using Oracle Functions per month? (Choose Two)
Amount of RAM used by your functions.
Length of time a function runs.
Number of times a function is invoked.
Amount of storage used by your functions.
Network bandwidth used by your functions.
As a solution architect, you are designing a web application to be deployed across multiple Oracle Cloud Infrastructures (OCI) regions for a global audience. Your goal is that users from each region should access the application web servers deployed in their own geographical OCI location.
Which OCI feature can be used to achieve this?
OCI Traffic Management IP Prefix steering policy
OCI Global Load balancers
OCI Public Load Balancers
OCI Traffic Management GeoLocation steering policy
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)
Number of stored backups: How many backups you need to keep available and the deletion schedule for those you no longer need.
Governance: Tagging of backups so you can capture backup related API calls through the Audit service.
Frequency: How often you want to back up your data.
Location: Determine the Object Store Bucket where the backups will be stored.
Encryption: Whether to use your own key to encrypt your volume backups.
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?
The health check on some of the backend servers has failed and the load balancer has taken those servers temporarily out of rotation.
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.
The health check on some of the backend servers has failed and the load balancer was rebooting these servers.
Autoscaling has already scaled to the maximum number of instances specified in the configuration and there is no room for scaling further.
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?
Configure hourly block volumes backups using the OCI Command Line Interface (CLI).
Create a user defined backup policy with a schedule of generating daily backups for block volumes.
Configure hourly block volumes backups through the OCI Storage Gateway service.
Create a user defined backup policy with a schedule of generating hourly backups for block volumes.
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.
You must specify an action type while creating an Event service and specify the function you want to trigger.
Creating an event rule is not permitted for OCI Object storage.
The function must be deployed only to Oracle Kubernetes Engine (OKE).
You have to enable Object Storage buckets to emit events for state changes.
You must deploy the function that does facial recognition for the demo to work.
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)
instance.compartment.id -the OCID of the compartment where the instance resides.
instance.tenancy.id -the OCID of the tenancy where the instance resides.
tag...value -the tag namespace and tag key.
iam.policy.id - the OCID of the 1AM policy to apply to the group.
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) eufrankfurt-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?
You need to assign a reserved public IP address to the compute instances.
You need to set up a Service Gateway to send metrics to the OCI Monitoring service.
Autoscaling only works for instances with public IP addresses.
Autoscaling only works with single availability domains.
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?
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.
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.
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.
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 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?
Use locally attached NVMe instances and configure RAID 0 replication between servers.
Implement a single instance and install an NFS server, configure and create an NFS share, and mount this as /audit on the application instances.
Store the data on Oracle Object Storage mounted at the /audit mount point on all the Linux instances using the default mount options.
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 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?
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.
Block volumes attached as read-only are configured as shareable by default.
You can delete a block volume from one instance without detaching it from all other instances there by keeping other instance's storage intact.
Once you attach a block volume to an instance as read-only, it can only be attached to other instances as read-only.
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?
Use OCI CLI to call "network vnic" and "compute vnic-attachment" operations to find out the parent resource of the VNIC.
Use OCI CLI to delete the VNIC first and then delete the subnet.
Use OCI CLI to delete the subnet using -force option.
Copy and paste OCID of the VNIC in the search box of the OCI Console to find out the parent resource of the VNIC.
A customer has a Virtual Machine instance running in their Oracle Cloud Infrastructure tenancy. They realized that they wrongly picked a smaller shape for their compute instance. They are reaching out to you to help them fix the issue. Which of the below options is best recommended to suggest to the customer?
OCI doesn't allow such an operation.
Change the shape of instance without reboot, but stop all the applications running on instance beforehand to prevent data corruption.
Delete the running instance and spin up a new instance with the desired shape.
Change the shape of the virtual machine instance using the Change Shape feature available in the console.
You have configured backups for your Oracle Cloud Infrastructure (OCI) 2-node RAC DB systems on virtual machines. In the console, the database backup displays a Failed status.
Which of the following options is the most likely reason for this backup issue?
The master key stored in OCI Key Management for encryption and decryption of data in the database is not accessible to the backup service.
The auth token being used by the Object Store Swift endpoint is incorrect.
The allocated storage on the OCI File Storage service file system attached with the database is full.
The RMAN backup agent is not compatible with the version of database being used.
An E-Commerce company wants to deploy their web application for Oracle Database on Oracle Cloud Infrastructure (OCIJ DB Systems. In compliance with the business continuity program of the business, they need to provide a Recovery Point Objective (RPO) of 1 hour and a Recovery Time Objective (RTO) of 5 minutes. The web application should be highly available within the region and meet the RTO and RPO requirements in case of a region outage.
Which approach is the most suitable and cost effective configuration for this scenario?
Deploy a 1 node VM Oracle database in one region and replicate the database to a 1 node VM Oracle database in another region using a manual setup and configuration of Oracle Data Guard.
Deploy a 2 node Virtual Machine (VM) Oracle RAC database in one region and replicate the database to a 2 node VM Oracle RAC database in another region using a manual setup and configuration of Oracle Data Guard.
Deploy an Autonomous Transaction Processing (Serverless) database in one region and replicate it to an Autonomous Transaction Processing (Serverless) database in another region using Oracle GoldenGate.
Deploy a 1 node VM Oracle database in one region. Manually Configure a Recovery Manager (RMAN) database backup schedule to take hourly database backups. Asynchronously copy the database backups to object storage in another OCI region. If the primary OCI region is unavailable, launch a new 1 node VM Database in the other OCI region and restore the production database from the backup.
You have been asked to create a mobile application which will be used for submitting orders by users of a popular E-Commerce site. The application is built to work with Autonomous Transaction Processing - Serverless (ATP-S) database as the backend and HTML5 on Oracle Application Express as the front end. During the peak usage of the application you notice that the application response time is very slow. ATP-S database is deployed with 3 CPU cores and 1 TB of memory.
Which two options are expensive or impractical ways to improve the application response times?
Identify the maximum memory capacity needed for peak times and scale the memory for the ATPS database to that number. ATP-S will scale the memory down when not needed.
Use the Machine Learning (ML) feature of the ATP-S database iteratively to tune the SQL queries used by the application.
Scale up CPU core count and memory during peak times.
Enable auto scaling for CPU cores on ATP-S database.
Identify the maximum CPU capacity needed for peak times and scale the CPU core count for the ATP-S database to that number. ATP-S will scale the CPU core count down when not needed.
You have deployed art application server irt a private Subnet irt your virtual cloud network (VCN). For the database, you have provisioned an Autonomous Transaction Processing (ATP) serverless instance. However, you are unable to connect to the database instance from your application server.
Which two steps would you need to enable this connectivity?
Add an internet gateway to your VCN and add a route rule to your private subnet route table.
CIDR: 0.0.0.0/0
Target: Internet Gateway
Add a remote peering connection from your VCN to the ATP VCN
Add a stateful egress rule to the security list associated with your private subnet.
Destination CIDR: 0.0.0.0/0
Protocols: All Protocols
Create a NAT Gateway and add the following route rule to the route table of private subnet.
CIDR: 0.0.0.0/0
Target: NAT Gateway
As part of planning the network design on Oracle Cloud Infrastructure, you have been asked to create an Oracle Cloud Infrastructure Virtual Cloud Network (VCN) with 3 subnets, one in each Availability Domain. Each subnet needs to have a minimum of 64 usable IP addresses.
What is the smallest subnet and VCN size you should use to implement this design? The requirements are static, so no growth is expected.
122 for the VCN; 124 for the subnets
/23 for the VCN; /25 for the subnets
/24 for the VCN; /24 for the subnets
/22 for the VCN; /25 for the subnets
