Oracle 1Z0-1072-21 Online Practice Questions and Exam Preparation

Oracle 1Z0-1072-21 Online Questions & Answers

• Question 61:

  Which two Oracle Cloud Infrastructure database services allow you to dynamically both scale CPU and storage? (Choose two.)

  A. bare metal DB system
  B. virtual machine DB system
  C. Autonomous Data Warehouse (ADW)
  D. Autonomous Transaction Processing (ATP)
  C. Autonomous Data Warehouse (ADW)
  D. Autonomous Transaction Processing (ATP)

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  If a bare metal DB system requires more compute node processing power, you can scale up (increase) the number of enabled CPU cores in the system without impacting the availability of that system but you can't increase the storage If the original DB system VM shape uses a single node, running databases on the DB system nodes are sequentially stopped and then restarted on the new shape so not dynamic

• Question 62:

  The Oracle Cloud Infrastructure Block Volume service lets you expand the size of block and boot volumes. Which three options below can you use to increase the size of your block volumes?

  A. Clone an existing volume to a new, larger volume
  B. You can only expand block volumes and not boot volumes
  C. Expand an existing volume in place with offline resizing
  D. Take a backup of your existing volume and restore from the volume backup to a larger volume
  E. Expand an existing volume in place with online resizing
  A. Clone an existing volume to a new, larger volume
  C. Expand an existing volume in place with offline resizing
  D. Take a backup of your existing volume and restore from the volume backup to a larger volume

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  The Oracle Cloud Infrastructure Block Volume service lets you expand the size of block volumes and boot volumes. You have three options to increase the size of your volumes:

  Expand an existing volume in place with offline resizing. See Resizing a Volume Using the Console for the steps to do this.

  Restore from a volume backup to a larger volume. See Restoring a Backup to a New Volume and Restoring a Boot Volume.

  Clone an existing volume to a new, larger volume. See Cloning a Volume and Cloning a Boot Volume.

• Question 63:

  Which service is NOT supported by Oracle Cloud Infrastructure CLI?

  A. load balancer
  B. compute
  C. database
  D. block volumes
  D. block volumes

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  References: https://docs.cloud.oracle.com/iaas/Content/API/Concepts/cliconcepts.htm#services

• Question 64:

  Your company uses the Oracle Cloud Infrastructure (OCI) Object Storage service to share large data sets with its data science team. The data science team consists of 20 people who work from offices in Washington, D.C., and Tokyo. While working in these offices, employees are assigned an IP address from the public IP range 129.146.31.0/27 Which two steps should you take to ensure that the Object Storage bucket used in this scenario was only accessible from these office locations? (Choose two.)

  A. Write an IAM policy that includes the conditional statement where request.networkSource.name =CorpNet
  B. Set the bucket visibility to public and only share the URL with the data science team via email
  C. Create a pre-authenticated request for each data set and only share with the data science team via email
  D. Create a Network Source named CorpNetwork with a CIDR block of 129.146.31.0/27
  E. Create a Network Source named CorpNetwork with a CIDR block of 129.146.0.0/16
  F. Write an IAM policy that includes the conditional statement where request.region = 129.146.31.0/27
  C. Create a pre-authenticated request for each data set and only share with the data science team via email
  E. Create a Network Source named CorpNetwork with a CIDR block of 129.146.0.0/16

• Question 65:

  In Oracle Cloud Infrastructure Container Engine for Kubernetes (OKE), what does a Replica Set do?

  A. It provides declarative updates for Pods.
  B. It maintains a stable set of replica Pods running at any given time.
  C. It ensures that all Nodes run a copy of a Pod.
  D. It exposes an application running on a set of Pods.
  D. It exposes an application running on a set of Pods.

• Question 66:

  What is the maximum CIDR range that can be assigned when configuring a Virtual Cloud Network?

  A. /16
  B. /26
  C. /24
  D. /8
  A. /16

• Question 67:

  You are designing a two-tier web application in Oracle Cloud Infrastructure (OCI). Your clients want to access the web servers from anywhere, but want to prevent access to the database servers from the Internet. Which is the recommended way to design the network architecture?

  A. Create public subnets for web servers and private subnets for database servers in your virtual cloud network (VCN), and associate separate internet gateways for each subnet.
  B. Create public subnets for web servers and associate a dynamic routing gateway with that subnet, and a private subnet for database servers with no association to dynamic gateway.
  C. Create public subnets for web servers and private subnets for database servers in your VCN, and associate separate security lists and route tables for each subnet.
  D. Create a single public subnet for your web servers and database servers, and associate only your web servers to internet gateway.
  C. Create public subnets for web servers and private subnets for database servers in your VCN, and associate separate security lists and route tables for each subnet.

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  When you create a subnet, by default it's considered public, which means instances in that subnet are allowed to have public IP addresses. Whoever launches the instance chooses whether it will have a public IP address. You can override

  that behavior when creating the subnet and request that it be private, which means instances launched in the subnet are prohibited from having public IP addresses. Network administrators can therefore ensure that instances in the subnet

  have no internet access, even if the VCN has a working internet gateway, and security rules and firewall rules allow the traffic.

  There are two optional gateways (virtual routers) that you can add to your VCN depending on the type of internet access you need:

  Internet gateway: For resources with public IP addresses that need to be reached from the internet (example: a web server) or need to initiate connections to the internet. NAT gateway: For resources without public IP addresses that need to

  initiate connections to the internet (example: for software updates) but need to be protected from inbound connections from the internet.

  Just having an internet gateway alone does not expose the instances in the VCN's subnets directly to the internet. The following requirements must also be met:

  The internet gateway must be enabled (by default, the internet gateway is enabled upon creation).

  The subnet must be public.

  The subnet must have a route rule that directs traffic to the internet gateway. The subnet must have security list rules that allow the traffic (and each instance's firewall must allow the traffic).

  The instance must have a public IP address.

• Question 68:

  Which two choices are true for Oracle Autonomous Database with Shared Exadata Infrastructure?

  A. Billing for storage usage continues when autonomous database is stopped.
  B. Billing stops for both CPU and storage usage when autonomous database is stopped.
  C. Billing for compute usage stops when autonomous database is stopped.
  D. Autonomous database does not support per-second billing.
  E. Billing does not stop when autonomous database is terminated.
  A. Billing for storage usage continues when autonomous database is stopped.
  C. Billing for compute usage stops when autonomous database is stopped.

• Question 69:

  You are running a mission-critical database application in Oracle Cloud Infrastructure (OCI). You take regular backups of your DB system to OCI object storage. Recently, you notice a failed database backup status in the console. What step can you take to determine the cause of the backup failure?

  A. Ensure that your database host can connect to OCI object storage.
  B. Ensure the database archiving mode is set to NOARCHIVELOG.
  C. Make sure that the database is not active and running while the backup is in progress.
  D. Don't restart the dcsagent program even if it has a status of stop/waiting.
  A. Ensure that your database host can connect to OCI object storage.

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  Database backups can fail for various reasons. Typically, a backup fails because either the database host cannot access the object store, or there are problems on the host or with the database configuration. First need to determining the Problem In the Console, a failed database backup either displays a status of Failed or hangs in the Backup in Progress or Creating state. If the error message does not contain enough information to point you to a solution, you can use the database CLI and log files to gather more data. Then, refer to the applicable section in this topic for a solution. Database Service Agent Issues Your Oracle Cloud Infrastructure Database makes use of an agent framework to allow you to manage your database through the cloud platform. Occasionally you might need to restart the dcsagent program if it has the status of stop/waiting to resolve a backup failure. Object Store Connectivity Issues Backing up your database to Oracle Cloud Infrastructure Object Storage requires that the host can connect to the applicable Swift endpoint. You can test this connectivity by using a Swift user. Host Issues One or more of the following conditions on the database host can cause backups to fail:

  -Interactive Commands in the Oracle Profile

  -The File System Is Full

  -Incorrect Version of the Oracle Database Cloud Backup Module

  -Changes to the Site Profile File (glogin.sql)

  Database Issues

  An improper database state or configuration can lead to failed backups.

  -Database Not Running During Backup

  - Archiving Mode Set to NOARCHIVELOG (When you provision a new database, the archiving mode is set to ARCHIVELOG by default. This is the required archiving mode for backup operations)

  -Stuck Database Archiver Process and Backup Failures

  -Temporary Tablespace Errors

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  RMAN Configuration and Backup Failures

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  RMAN Retention Policy and Backup Failures

  -Loss of Objectstore Wallet File and Backup Failures

  TDE Wallet and Backup Failures

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  Incorrect TDE Wallet Location Specification

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  Incorrect State of the TDE Wallet

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  Incorrect Configuration Related to the TDE Wallet

  -Missing TDE Wallet File

  As this is not new provisioned database and already in the ARCHIVELOG , regular backups of DB system to OCI object storage in places, so the best answers are,

  - Ensure that your database host can connect to the OCI object storage

  -Restart the database service agent

• Question 70:

  What is a valid option when exporting a custom image?

  A. object storage URL
  B. archive storage URL
  C. file storage service
  D. block volume
  A. object storage URL

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  You can use the Console or API to export images, and the exported images are stored in the Oracle Cloud Infrastructure Object Storage service. To perform an image export, you need write access to the Object Storage bucket for the image.