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  • Based on Official Syllabus Topics of Actual Oracle 1Z0-1072-20 Exam [Q12-Q31]

Based on Official Syllabus Topics of Actual Oracle 1Z0-1072-20 Exam [Q12-Q31]

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Based on Official Syllabus Topics of Actual Oracle 1Z0-1072-20 Exam

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Oracle 1Z0-1072-20 Exam Syllabus Topics:

Topic Details
Topic 1
  • Describe the components of Compute service, including shapes, images, and custom images
  • Set up a Load Balancer
Topic 2
  • Architect High Availability and Disaster Recovery solutions
  • Apply core Identity and Access Management components
Topic 3
  • Use advanced database features, such as Dataguard, BYOL, Data encryption, RAC, and EXADATA
Topic 4
  • Architect High Availability (HA) using Explain resource locations
Topic 5
  • Troubleshoot options using console connections and boot volume
  • Discuss Load Balancer terminology and concepts

 

NEW QUESTION 12
You want an Oracle Cloud Infrastructure (OCI) compute instance in your compartment to make API calls to other services within OCI without storing credentials in a configuration file.
What do you need to do?

 
 
 
 

NEW QUESTION 13
Which two statements are true when Oracle Data Guard is configured (using the Console) between two Virtual Machine DB Systems deployed in Oracle Cloud Infrastructure? (Choose two.)

 
 
 
 
 
Reference:
https://docs.cloud.oracle.com/en-us/iaas/Content/Database/Concepts/overview.htm

NEW QUESTION 14
You are designing a networking infrastructure in multiple Oracle Cloud Infrastructure regions and require connectivity between workloads in each region. You have created a dynamic routing gateway (DRG) and a remote peering connection. However, your workloads are unable to communicate with each other.
What are two reasons for this? (Choose two.)

 
 
 
 
 
Explanation
Setting Up a Remote Peering
Create the RPCs: Each VCN administrator creates an RPC for their own VCN’s DRG.
Share information: The administrators share the basic required information.
Set up the required IAM policies for the connection: The administrators set up IAM policies to enable the connection to be established.
Establish the connection: The requestor connects the two RPCs (see Important Remote Peering Concepts for the definition of the requestor and acceptor).
Update route tables: Each administrator updates their VCN’s route tables to enable traffic between the peered VCNs as desired.
Update security rules: Each administrator updates their VCN’s security rules to enable traffic between the peered VCNs as desired.

NEW QUESTION 15
Which two are required to create an IPSec VPN connection? (Choose two.)

 
 
 
 

NEW QUESTION 16
You deployed a web server in Oracle Cloud Infrastructure using an ephemeral public IP. After a few changes in your web server configuration, you rebooted the server and a new public IP was associated to your instance.
What should you do to prevent this from happening again?

 
 
 
 
A public IP address is an IPv4 address that is reachable from the internet. If a resource in your tenancy needs to be directly reachable from the internet, it must have a public IP address. Depending on the type of resource, there might be other requirements.
There are two types of public IPs:
Ephemeral: Think of it as temporary and existing for the lifetime of the instance.
Reserved: Think of it as persistent and existing beyond the lifetime of the instance it’s assigned to. You can unassign it and then reassign it to another instance whenever you like. Exception: reserved public IPs on public load balancers.
To create a new reserved public IP in your pool
Confirm you’re viewing the region and compartment where you want to create the reserved public IP.
Open the navigation menu. Under Core Infrastructure, go to Networking and click Public IPs.
Click Create Reserved Public IP.
Enter the following:
Name: An optional friendly name for the reserved public IP. The name doesn’t have to be unique, and you can change it later. Avoid entering confidential information.
Compartment: Leave as is.
Tags:Optionally, you can apply tags. If you have permissions to create a resource, you also have permissions to apply free-form tags to that resource. To apply a defined tag, you must have permissions to use the tag namespace. For more information about tagging, see Resource Tags. If you are not sure if you should apply tags, skip this option (you can apply tags later) or ask your administrator.
Click Create Reserved Public IP.
To assign a reserved public IP to a private IP
Prerequisite: The private IP must not have an ephemeral or reserved public IP already assigned to it. If it does, first delete the ephemeral public IP, or unassign the reserved public IP.
Confirm you’re viewing the compartment that contains the instance with the private IP you’re interested in.
Open the navigation menu. Under Core Infrastructure, go to Compute and click Instances.
Click the instance to view its details.
Under Resources, click Attached VNICs.
The primary VNIC and any secondary VNICs attached to the instance are displayed.
Click the VNIC you’re interested in.
Under Resources, click IP Addresses.
The VNIC’s primary private IP and any secondary private IPs are displayed.
For the private IP you’re interested in, click the Actions icon (three dots), and then click Edit.
In the Public IP Address section, for Public IP Type, select the radio button for Reserved Public IP.
Enter the following:
Compartment: The compartment that contains the reserved public IP you want to assign.
Reserved Public IP: The reserved public IP you want to assign. You have three choices:
Create a new reserved public IP. You may optionally provide a friendly name for it. The name doesn’t have to be unique, and you can change it later. Avoid entering confidential information.
Assign a reserved public IP that is currently unassigned.
Move a reserved public IP from another private IP.
Click Update.

NEW QUESTION 17
Which two statements are true about Autonomous Data Warehouse (ADW) backup?

 
 
 
 
Explanation
Autonomous Database automatically backs up your database for you.In addition to automatic backups Autonomous Database also allows you take manual backups to your Oracle Cloud Infrastructure Object Storage. for example if you want to take a backup before a major change to make restore and recovery faster.
Also, Manual backups are only supported with buckets created in the standard storage tier if you provision an Autonomous Data Warehouse instance named ADWC1, the bucket name should be backup_adwc1 (the bucket name is lowercase)

NEW QUESTION 18
Which statement is true about Data Guard Implementation in DB systems?

 
 
 
 
An Oracle Data Guard implementation requires two DB systems, one containing the primary database and one containing the standby database. When you enable Oracle Data Guard for a virtual machine DB system database, a new DB system with the standby database is created and associated with the primary database. For a bare metal DB system, the DB system with the database that you want to use as the standby must already exist before you enable Oracle Data Guard.
Requirement details are as follows:
– Both DB systems must be in the same compartment.
– The DB systems must be the same shape type (for example, if the shape of the primary database is a virtual machine, then the shape of the standby database can be any other virtual machine shape).
– If your primary and standby databases are in different regions, then you must peer the virtual cloud networks (VCNs) for each database. See Remote VCN Peering (Across Regions).
– Configure the security list ingress and egress rules for the subnets of both DB systems in the Oracle Data Guard association to enable TCP traffic to move between the applicable ports. Ensure that the rules you create are stateful (the default).

NEW QUESTION 19
You have an Oracle Cloud Infrastructure (OCI) load balancer distributing traffic via an evenly-weighted round robin policy to your backend web servers. You notice that one of your web servers is receiving more traffic than other web servers.
How can you resolve this imbalance?

 
 
 
 
Explanation
Session persistence is a method to direct all requests originating from a single logical client to a single backend web server. Backend servers that use caching to improve performance, or to enable log-in sessions or shopping carts, can benefit from session persistence

NEW QUESTION 20
Which statement is true about Oracle Cloud Infrastructure (OCI) object storage support for server-side encryption?

 
 
 
 
References:
https://www.oracle.com/cloud/storage/object-storage-faq.html
– Oracle Object Storage supports server-side encryption. All data stored in Oracle Object Storage is automatically encrypted
– Encryption is automatically enabled for all data with no action required on the part of customers.
– Oracle encrypt both the object data and the user-defined metadata associated with the object.

NEW QUESTION 21
Which two Oracle Cloud Infrastructure database services allow you to dynamically both scale CPU and storage? (Choose two.)

 
 
 
 
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 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

NEW QUESTION 22
Which two statements are true about Oracle Cloud Infrastructure (OCI) DB Systems Data Guard service?

 
 
 
 
An Oracle Data Guard implementation requires two DB systems, one containing the primary database and one containing the standby database. When you enable Oracle Data Guard for a virtual machine DB system database, a new DB system with the standby database is created and associated with the primary database. For a bare metal DB system, the DB system with the database that you want to use as the standby must already exist before you enable Oracle Data Guard.
Requirement details are as follows:
– Both DB systems must be in the same compartment.
– The DB systems must be the same shape type (for example, if the shape of the primary database is a virtual machine, then the shape of the standby database can be any other virtual machine shape).
– If your primary and standby databases are in different regions, then you must peer the virtual cloud networks (VCNs) for each database.
– Configure the security list ingress and egress rules for the subnets of both DB systems in the Oracle Data Guard association to enable TCP traffic to move between the applicable ports. Ensure that the rules you create are stateful (the default).

NEW QUESTION 23
Which two options are true for Autonomous Transaction Processing (ATP) database? (Choose two.)

 
 
 
 
 
Explanation
You can scale up/down your Autonomous Database to scale both in terms of compute and storage only when needed, allows people to pay per use.
Oracle allows you to scale compute and storage independently, no need to do it together. these scaling activities fully online (no downtime required) in Details page Autonomous Database click Scale Up/Down. Click on arrow to select a value for CPU Core Count or Storage (TB).
Or Select auto scaling to allow the system to automatically use up to three times more CPU and IO resources to meet workload demand, compared to the database operating with auto scaling disabled.

NEW QUESTION 24
A company currently uses Microsoft Active Directory as its identity provider. The company recently subscribed to Oracle Cloud Infrastructure (OCI) to leverage the cloud platform for test and development. As the administrator, you configured the OCI tenancy to be federated with Microsoft Active Directory. Now you need to give access to developers so that they can start creating resources in their OCI accounts.
Which step will you perform to make sure you are not duplicating user creation inside of OCI tenancy?

 
 
 
 
Explanation
When working with your IdP, your administrator defines groups and assigns each user to one or more groups according to the type of access the user needs. Oracle Cloud Infrastructure also uses the concept of groups (in conjunction with IAM policies) to define the type of access a user has. As part of setting up the relationship with the IdP, your administrator can map each IdP group to a similarly defined IAM group, so that your company can re-use the IdP group definitions when authorizing user access to Oracle Cloud Infrastructure resources.

NEW QUESTION 25
When terminating a compute instance, you want to preserve the boot volume and its data.
Which step will you need to perform?

 
 
 
 
Explanation
References: The dialog will show you when you terminate the instance. If you want to preserve the boot volume associated with the instance, uncheck Permanently delete the attached Boot Volume.
https://docs.cloud.oracle.com/iaas/Content/Compute/Tasks/terminatinginstance.htm

NEW QUESTION 26
You have been notified of an application failure indicating that one or more of the Oracle Cloud Infrastructure (OCI) resources have become unavailable. After scanning the Compute and Database consoles, you notice that one of the DB Systems is missing.
What would you do to identify the reason for this missing resource?

 
 
 
 
You can filter results by request actions to zero in on only the events with operations that interest you. For example, say that you only want to know about instances that were deleted during a specific time frame. Select a delete request action filter to see only the events with delete operations Reference:
https://docs.cloud.oracle.com/en-us/iaas/Content/GSG/Tasks/usingaudit.htm

NEW QUESTION 27
You are working for a financial institution that is currently running two web applications in Oracle Cloud Infrastructure (OCI). All resources were created in the root compartment.
Your manager asked you to deploy new resources to support a proof-of-concept (PoC) for Oracle FlexCube.
You must ensure that the FlexCube resources are secured and cannot be affected by the team that manages the two web applications.
Which two tasks should you complete to ensure the required security of your resources? (Choose two.)

 
 
 
 
 

NEW QUESTION 28
You created a public subnet and an internet gateway in your virtual cloud network (VCN) of Oracle Cloud Infrastructure. The public subnet has an associated route table and security list. However, after creating several compute instances in the public subnet, none can reach the Internet.
Which two are possible reasons for the connectivity issue? (Choose two.)

 
 
 
 
 
An internet gateway as an optional virtual router that connects the edge of the VCN with the internet. To use the gateway, the hosts on both ends of the connection must have public IP addresses for routing. Connections that originate in your VCN and are destined for a public IP address (either inside or outside the VCN) go through the internet gateway. Connections that originate outside the VCN and are destined for a public IP address inside the VCN go through the internet gateway.
Working with Internet Gateways
You create an internet gateway in the context of a specific VCN. In other words, the internet gateway is automatically attached to a VCN. However, you can disable and re-enable the internet gateway at any time. Compare this with a dynamic routing gateway (DRG), which you create as a standalone object that you then attach to a particular VCN. DRGs use a different model because they’re intended to be modular building blocks for privately connecting VCNs to your on-premises network.
For traffic to flow between a subnet and an internet gateway, you must create a route rule accordingly in the subnet’s route table (for example, destination CIDR = 0.0.0.0/0 and target = internet gateway). If the internet gateway is disabled, that means no traffic will flow to or from the internet even if there’s a route rule that enables that traffic. For more information, see Route Tables.
For the purposes of access control, you must specify the compartment where you want the internet gateway to reside. If you’re not sure which compartment to use, put the internet gateway in the same compartment as the cloud network. For more information, see Access Control.
You may optionally assign a friendly name to the internet gateway. It doesn’t have to be unique, and you can change it later. Oracle automatically assigns the internet gateway a unique identifier called an Oracle Cloud ID (OCID). For more information, see Resource Identifiers.
To delete an internet gateway, it does not have to be disabled, but there must not be a route table that lists it as a target.
AS per compute instances can connect to the Internet so you use egress no ingress

NEW QUESTION 29
You have two line of business operations (LOB1, LOB2) leveraging Oracle Cloud Infrastructure. LOB1 is deployed in VCN1 in the OCI US East region, while LOB2 is deployed in VCN2 in the US West region. You need to peer VCN1 and VCN2 for disaster recovery and data backup purposes. To ensure you can utilize the OCI Virtual Cloud Network remote peering feature, which CIDR ranges should be used?

 
 
 
 
Explanation
VCN1 (10.0.0.0/16) will use the IP Range from 10.0.0.0 to 10.0.255.255 and the VNC 2 (172.16.0.0/16) will use the IP Range from 172.16.0.0 to 172.16.255.255 the will not be overlap between the 2 VCN

NEW QUESTION 30
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?

 
 
 
 
Explanation
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.

NEW QUESTION 31
Which two configuration formats does Terraform support? (Choose two.)

 
 
 
 
Explanation
References:
Terraform configuration files can use either of two formats: Terraform domain-specific language (HashiCorp Configuration Language format [HCL]), which is the recommended approach, or JSON format if the files need to be machine-readable.

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