1z0-1072-21 Exam Practice Questions prepared by Oracle Professionals [Q68-Q91]

1z0-1072-21 Oracle

admin • November 15, 2022

1z0-1072-21 Exam Practice Questions prepared by Oracle Professionals [Q68-Q91]

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1z0-1072-21 Exam Practice Questions prepared by Oracle Professionals

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Oracle 1z0-1072-21 Exam Syllabus Topics:

Topic	Details
Topic 1	DNS and traffic management configuration DB system configuration and management
Topic 2	Vulnerability Scan and Web Application Firewall Configuration Public and private IP addresses and virtual NIC descriptions
Topic 3	Object storage versioning, lifecycle management, and maintenance rule implementation Implementation and management of virtual cloud networks
Topic 4	Virtual cloud network routing configuration OS management description and configuration
Topic 5	Layer-7 Load balancer description and configuration Configuring Data Guard, Security Zones and Security Advisors
Topic 6	Understanding the performance layer of block volumes Understanding the observation and management platform
Topic 7	Public and Private DNS Zone Descriptions Object storage configuration and management

NO.68 Which five are the required parameters to launch an instance in Oracle Cloud Infrastructure? (Choose five.)

subnet

Availability Domain

Virtual Cloud Network

host name

instance shape

image operating system

private IP address

Explanation
References:https://docs.cloud.oracle.com/iaas/Content/Compute/Concepts/computeoverview.htm

NO.69 Whichtwo choices are true for Autonomous Data Warehouse (ADW)? (Choose two.)

Billing stops only when the ADW is terminated

Billing stops for both CPU usage and storage usage when ADW is stopped

Billing for compute stops when ADW is stopped

Billingfor storage continues when ADW is stopped

Explanation
When Autonomous Databas instance is stopped,
CPU billing is halted based on full-hour cycles of usage
Billing for storage continues as long as the service instance exists.
and When AutonomousDatabase instance is started, the CPU billing is initiated

NO.70 You have hired a new employee to run reports from the Autonomous Data Warehouse (ADW) and are not confident in their SQL writing ability.
Into which consumer group will you assign this individual to minimize the impact of their code?

Lowest

Medium

Highest

High

Low

Explanation
in ADW, The tnsnames.ora file provided with the credentials zip file contains three database service names identifiable as high, medium, and low. The predefined service names provide differentlevels of performance and concurrency for Autonomous Data Warehouse.
high: The High database service provides the highest level of resources to each SQL statement resulting in the highest performance, but supports the fewest number of concurrent SQL statements. Any SQL statement in this service can use all the CPU and IO resources in your database. The number of concurrent SQL statements that can be run in this service is 3, this number is independent of the number of OCPUs in your database.
medium: The Medium database service provides a lower level of resources to each SQL statement potentially resulting a lower level of performance, but supports more concurrent SQL statements. Any SQL statement in this service can use multiple CPU and IO resources in yourdatabase. The number of concurrent SQL statements that can be run in this service depends on the number of OCPUs in your database.
low: The Low database service provides the least level of resources to each SQL statement, but supports the most number of concurrent SQL statements. Any SQL statement in this service can use a single CPU and multiple IO resources in your database. The number of concurrent SQL statements that can be run in this service can be up to 300 times the number of OCPUs.
The predefinedservice names provide different levels of performance and concurrency for Autonomous DB Choose whichever database service offers the best balance of performance and concurrency.
Use the low database service name. to minimize the impact of their SQLs to by low consumer group

NO.71 Your on-premises hosted application uses Oracle database server. Your database administrator must have access to the database server for managing the application. Your database server is sized for seasonal peak workloads, which results in high licensing costs. You want to move your application to Oracle Cloud Infrastructure (OCI) to take advantage of CPU scaling options.
Which database offering on OCI would you select?

bare metal DB systems

VM DBsystems

Autonomous Transactions Processing (ATP)

Autonomous Data Warehouse (ADW)

Explanation
– In, Oracle Autonomous Database, Customers are not given OS logons or SYSDBA privileges to prevent phishing attacking.
– If a bare metal DB system requiresmore 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.
You cannot change the number of CPU cores for a virtual machine DB system in the same way as metal DB system. Instead, you must change the shape to one with a different number of OCPUs Changing the shape does not impact the amount of storage available to the DB system. However, the new shape can have different memory and network bandwidth characteristics, and you might need to reapply any customizations to these aspects after the change.

NO.72 In what two ways does Oracle Cloud Infrastructure (OCI) file storage service differ from OCI object storage and block volume services?

You can move object storage buckets, block volumes and file storage mount targets between compartments.

File Storage uses the network file system (NFS) protocol, whereas block volume uses iSCSI.

Block volume service Is NVMe based, while file storage service is not.

File storage mount target does not provide a private IP address, while the object storage bucket provides one.

Explanation
The mount target provides the IP address or DNS name that is used together with a unique export path to mount the file system.
You can move mount targets from one compartment to another.

NO.73 You are running several Linux based operating systems in your on .premises environment that you want to import to OCI as custom images. You can launch your imported images as OCI compute Virtual machines.
Which two modes below can be usedto launch these imported Linux VMs?

Native

Mixed

Paravirtualized

Emulated

Explanation
You can use the Console or API to import exported images from Object Storage. To import an image, you need read access to the Object Storage object containing the image.
during the Import you can select the Launch mode:
For custom images where the image format is .oci, Oracle Cloud Infrastructure selects the applicable launch mode based on the launch mode for the source image.
For custom images exported from Oracle Cloud Infrastructure where the image type is QCOW2, select Native Mode.
To import other custom images select Paravirtualized Mode or Emulated Mode. For more information, see Bring Your Own Image (BYOI).

NO.74 Which statement is true about cloning a volume?

Youneed to detach a volume before cloning from it.

A cloned volume is the same as a snapshot that has a dependency on the source volume.

You can change the block volume size when cloning a volume.

You can create a clone for a volume across regions.

Explanation
References:https://docs.cloud.oracle.com/iaas/Content/Block/Tasks/cloningavolume.htm?tocpath=Services%7CB

NO.75 Which two statements are true about restoring a block volume from a manual or policy-based block volume backup? (Choose two.)

It can be restored as new volumes with different sizes from the backups

It can be restored as a new volume to any AD acrossdifferent regions

It must be restored as a new volume to the same availability domain (AD) on which the original block volume backup resides

It can be restored as a new volume to any AD in the same region

Explanation
A – Backups are encrypted andstored in Oracle Cloud Infrastructure Object Storage, and can be restored as new volumes to any availability domain within the same region they are stored.
D- You can restore a block volume backup to a larger volume size. To do this, check Custom Block Volume Size (GB), and then specify the new size. You can only increase the size of the volume, you cannot decrease the size.

NO.76 D18912E1457D5D1DDCBD40AB3BF70D5D
Which two methods are supportedfor migrating your on-premises Oracle database to an Oracle Autonomous Transaction Processing (ATP) database in Oracle Cloud Infrastructure? (Choose two.)

Load text files into ATP using SQL Developer.

Use RMAN duplicate.

Use Oracle Data Pump.

Transfer the physical database files and re-create the database.

Use database backup and restore.

Reference:https://docs.oracle.com/en/solutions/migrate-to-atp/index.html#GUID-28E5A683-6DC6-4A07- BB1C-55F020D4C1CD

NO.77 Which statement is true about a pre-authenticated request in Oracle Cloud Infrastructure Object Storage?

You cancreate only 1, 000 pre-authenticated requests per bucket.

You can create a pre-authenticated request only for public buckets.

You cannot retire a pre-authenticated request before it expires.

You cannot extend the expiration date on a pre-authenticated request.

Explanation
https://docs.cloud.oracle.com/iaas/Content/Object/Tasks/usingpreauthenticatedrequests.htm You can create an unlimited number of pre-authenticated requests.
You can’t edit a pre-authenticated request. If you want to change user access options in response to changing requirements, you must create a new preauthenticated request.
URL: https://docs.cloud.oracle.com/iaas/Content/Object/Tasks/managingbuckets.htm You can change a bucket’s access from public to private or from private to public. Changing the type of access doesn’t affect existing pre-authenticated requests. Existing pre-authenticated requestsstill work.

NO.78 Your company has decided to move a few applications to Oracle Cloud and you have been asked to design it for both High Availability (HA) and Disaster Recovery (DR).
Which two should youconsider while designing your Oracle Cloud Infrastructure architecture? (Choose two.)

Region

Instance Shape

Compartments

Availability Domain

Explanation
References:https://blogs.oracle.com/cloud-infrastructure/migration-and-disaster-recovery-in-the-oracle-cloud-wi

NO.79 Which two are NOT an image source when launching a new compute instance? (Choose two.)

boot volume

custom image

Object Storage

bare metal instance

NO.80 Which statement is true regarding Autonomous Transaction Processing (ATP)?

A database name cannot be used concurrently forboth an Autonomous Data Warehouse (ADW) and an ATP database

After terminating a database, the database name is available for immediate reuse

A maximum of 8 cores can be enabled for an ATP database

A maximum of 2 TB of storage can be enabled for anATP database

Explanation
The database name must be unique among all Autonomous Data Warehouses and Autonomous Databases in your tenancy in the same region.

Terminating an Autonomous Transaction Processing database permanently deletes the instance andremoves all automatic backups. You cannot recover a terminated database.
the maximum number of CPUs and maximum storage capacity that can be provisioned in Oracle Autonomous Database In the current release up to 128 CPUs and 128TB can be provisioned fromthe cloud console.
Customers requiring more resources need to call their Oracle account team

NO.81 You have two NFS clientsrunning in two different subnets within the same Oracle Cloud Infrastructure (OCI) Virtual Cloud Network (VCN). You have created a shared file system for the two NFS clients who want to connect to the same file system, but you want to restrict one of the clients to have READ access while the other has READ/Write access. Which OCr feature would you leverage to meet this requirement?

Use VCN security rules to control access for the NFS clients

Use OCI Identity Access Management to control access for the NFS clients

Use File Storage NFS Export Options to control access for the NFS clients

Use NFS security to control access for the NES clients

Explanation
Oracle Cloud Infrastructure File Storage service provides a durable, scalable, secure,enterprise-grade network file system. You can connect to a File Storage service file system from any bare metal, virtual machine, or container instance in your Virtual Cloud Network (VCN). You can also access a file system from outside the VCN using OracleCloud Infrastructure FastConnect and Internet Protocol security (IPSec) virtual private network (VPN).
EXPORT
Exports control how NFS clients access file systems when they connect to a mount target. File systems are exported (made available) through mounttargets. Each mount target maintains an export set which contains one or many exports. A file system must have at least one export in one mount target in order for instances to mount the file system. The information used by an export includes the file system OCID, mount target OCID, export set OCID, export path, and client export options. For more information, see Managing Mount Targets.
EXPORT SET
Collection of one or more exports that control what filesystems the mount target exports using NFSv3 protocol and how those file systems are found using the NFS mount protocol. Each mount target has an export set. Each file system associated with the mount target has at least one export in the export set.
EXPORT PATH
A path that is specified when an export is created. It uniquely identifies the file system within the mount target, letting you associate up to 100 file systems to a single mount target. This path is unrelated to any path within the file system itself, or the client mount point path.
EXPORT OPTIONS
NFS export options are a set of parameters within the export that specify the level of access granted to NFS clients when they connect to a mount target. An NFS export options entry within an export defines access for a single IP address or CIDR block range. For more information, see Working with NFS Export Options.

NO.82 Which two Oracle CloudInfrastructure database services allow you to dynamically both scale CPU and storage? (Choose two.)

bare metal DB system

virtual machine DB system

Autonomous Data Warehouse (ADW)

Autonomous Transaction Processing (ATP)

Explanation
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 shapeuses a single node, running databases on the DB system nodes are sequentially stopped and then restarted on the new shape so not dynamic

NO.83 You deployed an Oracle Cloud Infrastructure (OCI) compute instance (VM.Standard2.16) to run a SQL database. After a few weeks, you need to increase disk performance by using NVMe disks but keeping the same number of CPUs. As a first step, you terminate the instance and preserve the boot volume.
What is the next step?

Create a new instance using a VM.DenseIO2.16 shape using the preserved boot volume and move the SQL Database data to block volume

Create a new instance using a VM.DenseIO2.8 shape using the preserved boot volume and move the SQL Database data to NVMe disks

Create a new instance using a VM.Standard1.16 shape using the preserved boot volume and move the SQL Database data to NVMe disks

Create a new instance using a VM.DenseIO2.16 shape using the preserved boot volume move the SQL Database data to NVMe disks

Explanation
to Increase disk performance by using NVMe disks you can use Dense IO Shape also as the number of CPUs will not change so we should VM.DenseIO2.16

NO.84 What is true about data guard set up with fast-start failover (FSFO) in Oracle Cloud Infrastructure (OCI)?

The best practice for high availability and durability is to run the primary, standby, and observer in separate availability domains (ADs).

When you configure data guard using OCI console, the default mode is set to maxprotection.

You cannot create the standby DB system in a different AD from the primary DB system.

You cannot use database command line interface (CLI) to set up data guardwith FSFO.

Explanation
References:
The best practice for high availability and durability is to run the primary, standby, and observer in separate availability domains. The observer determines whether or not to failover to a specific target standby database
https://docs.cloud.oracle.com/en-us/iaas/Content/Database/Tasks/usingDG.htm#ConfiguringObserverOptional

NO.85 How can you provide users access to an existing compartment?

by granting users access to a compartment when the compartment is created

by adding users to a group and defining a policy to provide the group access to the compartment

by adding users to a compartment. All users in the compartment will have access to the objects in the compartment.

bygranting access directly to the user when the user is created

Explanation
A policy is a document that specifies who can access which Oracle Cloud Infrastructure resources that your company has, and how. A policy simply allows a group to work in certainways with specific types of resources in a particular compartment In general, here’s the process an IAM administrator in your organization needs to follow:
Define users, groups, and one or more compartments to hold the cloud resources for your organization.
Create one or more policies, each written in the policy language.
Place users into the appropriate groups depending on the compartments and resources they need to work with.
Provide the users with the one-time passwords that they need in order to accessthe Console and work with the compartments. For more information,

NO.86 You are planning to deploy a multi-region web application in Oracle Cloud Infrastructure (OCI). You have customers in North America, Asia and Europe who will access the application.
What service is available in OCI to help you choose the regions the lowest latency to these markets?

Internet Intelligence

FastConnect

IPsec VPN

DNS Zone Management

NO.87 Which two statements are true about an Oracle Cloud Infrastructure object storage bucket? (Choose two.)

You can associate a bucket with multiple compartments

You cannot change a bucket from private topublic after it is created

You can associate a bucket with only a single compartment

You cannot edit or append data to an object, but you can replace the entire object

Explanation
A bucket is associated with a single compartment.
You can’t edit or append data to an object, but you can replace the entire object.

NO.88 You have a shared file system between two web servers using File Storage Service (FSS) and you were tasked to create a backup plan for this environment to protect the data placed into the shared file system.
What is the recommended approach to create this backup usingFSS features?

Implement a backup policy to execute a snapshot of the shared volume.

Implement a backup policy to copy data from the shared volume to object storage.

Compress the data that is in the shared volume and copy it into a differentfolder on the boot volume disk.

Use the rsync tool to send data from the shared volume to a boot volume disk.

Use the rsync tool to send data from the shared volume to a block volume.

NO.89 WhichDNS resource record type is used to point a host name to an IPv4 address?

ALIAS

CNAME

AAAA

Explanation
References:https://docs.cloud.oracle.com/iaas/Content/DNS/Reference/supporteddnsresource.htm?tocpath=Servi

NO.90 Your organization has deployed a large, complex application across multiple compute instances in Oracle Cloud Infrastructure (OCI). These compute instances also have block volume storage attached to them. You want tocreate a time consistent backup of these block volume storage.
Which implementation strategy should be used?

Create a manual backup of each volume

Use scripts available in OCI to backup block volume storage

Group volumes in a volume group firstand then use available scripts in OCI

Group volumes in a volume group and create a manual backup of the volume group

Explanation
The Oracle Cloud Infrastructure Block Volume service provides you with the capability to group together multiple volumes ina volume group. A volume group can include both types of volumes, boot volumes, which are the system disks for your Compute instances, and block volumes for your data storage. You can use volume groups to create volume group backups and clones that are point-in-time and crash-consistent.
This simplifies the process to create time-consistent backups of running enterprise applications that span multiple storage volumes across multiple instances. You can then restore an entire group of volumes from a volume group backup.
To create a backup of the volume group
Open the navigation menu. Under Core Infrastructure, go to Block Storage and click Volumes Groups.
In the Volume Groups list, click Create Volume Group Backup in the Actions menu for the volume group you want to create a backup for.

NO.91 You have compartments C and D under the root compartment in your Oracle Cloud Infrastructure (OCI) tenancy; compartment C contains asub-compartment also named D.
You are trying to move this sub-compartment D to the parent compartment D like shown in the picture, but the move fails.

What is the reason for this error?