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Home Oracle 1z0-1072-23

Oracle 1z0-1072-23 Exam Practice Questions (P. 1)

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Question #1
You create a file system and then add a 2 GB file. You then take a snapshot of the file system.
What would be the total meteredBytes shown by the File Storage service after the hourly update cycle is complete?
  1. A
    2 GB
  2. B
    2.5 GB
  3. C
    3 GB
  4. D
    4 GB

Correct Answer:
A
chatbot-img GPT-4o - Answer
The correct answer is indeed A, 2 GB. This is because when you take a snapshot of a file system in Oracle Cloud Infrastructure, the snapshot itself initially doesn’t consume any extra storage. The meteredBytes reflect the actual data stored before any snapshots are accounted for, and since you added a 2 GB file to the file system, that's the total storage you're billed for at that time. Snapshots only start using additional storage when data changes after the snapshot is taken.

Question #2
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?
  1. A
    Export your current image in the VDI format and copy to an Object Storage bucket. Import it as a custom image. Select native mode to ensure the best possible performance.
  2. B
    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.
  3. C
    Export your current image in the QED format and copy to an Object Storage bucket. Import it as a custom image. Select emulated mode to ensure compatibility with legacy drivers.
  4. D
    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.

Correct Answer:
D
chatbot-img GPT-4o - Answer
When migrating legacy applications to OCI, especially when the existing CentOS version does not match OCI's provided images, using the QCOW2 format (as suggested in option D) is suitable. This choice allows for the migration of virtual server images by first copying them to an Object Storage bucket and then importing them as a custom image. Important to note, selecting emulated mode during the import process is crucial. This mode ensures compatibility with legacy drivers, which is essential for older applications that might depend on specific hardware interactions facilitated by these drivers. Thus, it combines both technical compatibility and performance considerations crucial for legacy systems.

Question #3
You just got a last minute request to create a set of instances in Oracle Cloud Infrastructure (OCI). The configuration and installed software are identical for every instance, and you already have a running instance in your OCI tenancy.
Which image option allows you to achieve this task with the least amount of effort?
  1. A
    Bring your own image and use it as a template for the new instances.
  2. B
    Select an image from the OCI Marketplace.
  3. C
    Create a custom image and use it as a template for the new instances.
  4. D
    Use Oracle-provided images and customize the installation using a third-party tool.

Correct Answer:
C
chatbot-img GPT-4o - Answer
In this scenario, creating a custom image from a running instance that already has the required configuration and software is the most efficient strategy. This process ensures all new instances are consistent with minimal effort, as it eliminates the need for individual installations and configurations on each new machine. Use the custom image as a base for launching new instances to maintain uniformity across your cloud infrastructure swiftly.

Question #4
Which THREE protocols are supported by the Oracle Cloud Infrastructure (OCI) private Network Load Balancers?
  1. A
    HTTP
  2. B
    UDP
  3. C
    ICMP
  4. D
    TCP
  5. E
    iSCSI
  6. F
    BGP

Correct Answer:
BCD
chatbot-img GPT-4o - Answer
Oracle Cloud Infrastructure's private Network Load Balancers accurately support UDP, ICMP, and TCP as key protocols. These protocols, integral at Layer 4 of the OSI model, provide diverse load-balancing functionalities—UDP for connectionless data delivery, ICMP primarily for diagnostic and control activities, and TCP for reliable, ordered data transmission between applications.

Question #5
You have an instance running in Oracle Cloud Infrastructure (OCI) that cannot be live-migrated during an infrastructure maintenance event. OCI schedules a maintenance due date within 14 to 16 days and sends you a notification.
What would happen if you choose not to proactively reboot the instance before the scheduled maintenance due date?
  1. A
    You will receive another notification to reboot within the next 14 days.
  2. B
    The instance will get terminated.
  3. C
    The instance is either reboot-migrated or rebuilt in place for you.
  4. D
    You will receive another notification to reboot within the next 7 days.

Correct Answer:
C
chatbot-img GPT-4o - Answer
The correct response is indeed C. In OCI, if you don't manually reboot your instance ahead of Oracle's scheduled maintenance, OCI will automatically handle the situation. This involves either reboot-migrating or rebuilding your instance in place, ensuring continuous service without requiring your direct intervention. This automatic handling is part of Oracle’s proactive approach to maintain service availability and infrastructure reliability during maintenance events.

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