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Oracle 1z0-1072-23 Exam Questions

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Oracle 1z0-1072-23 Sample Questions – Free Practice Test & Real Exam Prep

Question #1

You created a virtual cloud network (VCN) with three private subnets. Two of the subnets contain application servers and the third subnet contains a DB System. The application requires a shared file system, therefore you have provisioned one using the file storage service (FSS).You have also created the corresponding mount target in one of the application subnets. The VCN security lists are properly configured so that the application servers can access FSS. The security team changed the settings for the DB System to have read-only access to the file system. However when they test it, they are unable to access FSS. How would you allow access to FSS? 

  • Create an NFS export option that allows READ_ONLY access where the source is the CIDR range of the DB System subnet.
  • Create an instance principal for the DB System. Write an Identity and Access Management (IAM) policy that allows the instance principal read-only access to the file storage service. 
  • Modify the security list associated with the subnet where the mount target resides. Change the ingress rules corresponding to the DB System subnet to be stateless. 
  • Modify the security list associated with the subnet where the mount target resides. 
  • Change the ingress rules corresponding to the DB System subnet to be stateful. 
Question #2

You are a system administrator of your company and you are managing a complex environment consisting of compute instances running Oracle Linux on Oracle Cloud Infrastructure (OCI). It's your task to apply all the latest kernel security updates to all instances.Which OCI service will allow you to complete this task? 

  • OCI Streaming service 
  • OS Management service 
  • OCI Registry 
  • OCI Security Zones to achieve automatic security updates 
  • OCI Cloud Guard to monitor and install the security updates 
Explanation
OS Management service is the OCI service that will allow you to complete this task. OS Management service is a service that helps users automate patching and package management for Oracle Linux and Windows instances in OCI. It can also help users monitor and manage system configuration and compliance across their instances. The other options are not suitable for this task, as they do not provide the functionality of OS Management service. References: [OS Management Service]
Question #3

Which tool provides a diagram of the implemented topology of all Virtual Cloud Networks (VCNs) in a selected region and tenancy?

  • Network Watcher 
  • Traffic Analytics 
  • VCN Flow Logs
  • Network Visualizer 
Explanation
Network Visualizer is the tool that provides a diagram of the implemented topology of all VCNs in a selected region and tenancy. Network Visualizer is a feature of the OCI Networking service that allows users to view and manage their network resources in a graphical interface. It can help users understand their network topology, troubleshoot issues, and optimize performance. The other options are not tools that provide a diagram of the VCN topology, but rather other features or services of OCI Networking. References: [Network Visualizer] 
Question #4

You have objects stored in an OCI Object Storage bucket that you want to share with a partner company. You decide to use pre-authenticated requests to grant access to the objects. Which statement is true about preauthenticated requests?

  • You cannot edit a pre-authenticated request. 
  • Deleting a pre-authenticated request does not revoke user access to the associated bucket or object. 
  • You need to provide your OCI credentials to the partner company. 
  • Pre-authenticated requests can be used to delete buckets or objects. 
Explanation
You cannot edit a pre-authenticated request is a true statement about pre-authenticated requests. Pre-authenticated requests are URLs that allow users to access objects or buckets in OCI Object Storage without requiring additional authentication or authorization. Pre-authenticated requests can be created with an expiration date and time, and can be used for read or write operations. However, once created, pre-authenticated requests cannot be edited, but can only be deleted or extended. The other statements are false about pre-authenticated requests. References: [Pre-Authenticated Requests] 
Question #5

You are responsible for deploying an application on Oracle Cloud Infrastructure (OCI). The application is memory intensive and performs poorly if enough memory is not available. You have created an instance pool of Linux compute instances in OCI to host the application and defined Autoscaling Configuration for the instance pool.What should you do to ensure that the instance pool autoscales to prevent poor application performance? 

  • Install OCI SDK on all compute instances and create a script that triggers the autoscaling event if there is high memory usage. 
  • Configure the autoscaling policy to monitor memory usage and scale up the number of instances when it meets the threshold.
  • Install the monitoring agent on all compute instances, which triggers the autoscaling group. 
  • Configure the autoscaling policy to monitor CPU usage and scale up the number of instances when it meets the threshold 
Explanation
According to the Oracle Cloud Infrastructure documentation1, autoscaling enables you to automatically adjust the number of compute instances in an instance pool based on performance metrics such as CPU and memory utilization. You select a performance metric to monitor and set thresholds that the performance metric must reach to trigger an autoscaling event. When system usage meets a threshold, autoscaling dynamically resizes the instance pool in near-real time. As load increases, the pool scales out. As load decreases, the pool scales in. 
Therefore, option B is the correct answer, as it allows you to monitor the memory usage of your application and scale up the number of instances when it meets or exceeds a predefined threshold. This will prevent poor application performance due to insufficient memory. 
Question #6

When creating an Oracle Cloud Infrastructure (OCI) Virtual Cloud Network (VCN) with the VCN wizard, which THREE gateways are created automatically? 

  • Internet Gateway 
  • Local Peering Gateway 
  • Dynamic Routing Gateway 
  • NAT Gateway 
  • Storage Gateway 
  • Bastion Host 
  • Service Gateway 
Explanation
 Internet Gateway, NAT Gateway, and Service Gateway are three gateways that are created automatically when creating a VCN with the VCN wizard. An Internet Gateway allows public traffic between the VCN and the internet. A NAT Gateway allows private traffic from the VCN to access the internet without exposing the VCN resources to incoming internet connections. A Service Gateway allows private traffic from the VCN to access OCI services such as Object Storage, Email Delivery, and Notifications. The other options are not created automatically by the VCN wizard, but can be added manually later if needed. References: [VCN Wizard], [Gateways]
Question #7

Company XYZ is spending $300,000.00 USD per month in egress fees for 7 Petabytes that they consume for Outbound Data Transfer in North America with their current cloud provider. The company is seeking to lower that expense considerably without reducing consumption. You propose migration to OCI because the Gigabyte Outbound Data Transfer in North America costs just $0.0085 USD per month. With OCI, how much will they spend per month for 7 Petabytes of Outbound Data Transfer? (1 Petabyte = 1000 Terabytes) 

  • $59,500.00 
  • $150,000.00 
  • $59,415.00 
  • $0.00 (free with OCI) 
Question #8

You want to distribute DNS traffic to different endpoints based on the location of the end user. Which Traffic Management Steering Policy would you use?

  • IP Prefix 
  • Load Balancer 
  • Geolocation
  • Failover
Explanation
The explanation is that geolocation is a type of Traffic Management Steering Policy that allows you to distribute DNS traffic to different endpoints based on the location of the end user. Geolocation steering policies use geolocation data from third-party providers to map end user IP addresses to geographic regions. You can create rules that specify which endpoints to serve for each region or country, or use a default endpoint for unspecified regions.
Question #9

Which is NOT a valid action within the Oracle Cloud Infrastructure (OCI) Block Volume service? 

  • Expanding an existing volume in place with offline resizing. 
  • Restoring from a volume backup to a larger volume. 
  • Attaching a block volume to an instance in a different availability domain. 
  • Cloning an existing volume to a new, larger volume.
Explanation
Attaching a block volume to an instance in a different availability domain is not a valid action within the OCI Block Volume service. A block volume can only be attached to an instance in the same availability domain. The other options are valid actions that can be performed with the Block Volume service. References: [Block Volume Actions]
Question #10

You are in the process of migrating several legacy applications from on-premises to Oracle Cloud Infrastructure(OCI). The current servers are already virtualized. However, you notice that the version of CentOS currently running does not align with any of the Oracle-provided compute images.How would you migrate your existing virtual server images to OCI? 

  • Export your current image in the VMDK format and copy to an Object Storage bucket. Import it as a custom image. Select native mode to ensure the best possible performance.  
  • Export your current image in the VDI format and copy to an Object Storage bucket. Import it as a custom image. Select native modeto ensure the best possible performance.
  • Export your current image in the QED format and copy to an Object Storage bucket. Import it as a custom image. Select emulated modeto ensure compatibility with legacy drivers. 
  • Export your current image in the QCOW2 format and copy to an Object Storage bucket. Import it as a custom image. Select emulated mode to ensure compatibility with legacy drivers  
Explanation
Export your current image in the QCOW2 format and copy to an Object Storage bucket. Import it as a custom image. Select emulated mode to ensure compatibility with legacy drivers. The explanation is that QCOW2 is one of the supported formats for importing custom images to OCI. Custom images are images that you can create from your own on-premises or cloud servers and use them to launch instances in OCI. To import a custom image, you need to export your current image in a supported format, copy it to an Object Storage bucket, and then import it as a custom image using the OCI console or API. When you import a custom image, you can choose between native mode or emulated mode. Native mode offers better performance but requires compatible drivers and firmware. Emulated mode offers better compatibility but lower performance. 
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