Ultimate Guide to Prepare Free Oracle 1Z0-1072-20 Exam Questions & Answer
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Oracle 1Z0-1072-20 Exam Syllabus Topics:
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NEW QUESTION 134
Which two statements are true about Oracle Cloud Infrastructure IPSec VPN Connect?
- A. OCI IPSec VPN can be configured in tunnel mode only
- B. Each OCI IPSec VPN consists of multiple redundant IPSec tunnels
- C. OCI IPSec VPN tunnel supports only static routes to route traffic
- D. OCI IPSec VPN can be configured in trans port mode only
Answer: A,B
Explanation:
VPN Connect provides a site-to-site IPSec VPN between your on-premises network and your virtual cloud network (VCN). The IPSec protocol suite encrypts IP traffic before the packets are transferred from the source to the destination and decrypts the traffic when it arrives.
On general, IPSec can be configured in the following modes:
Transport mode: IPSec encrypts and authenticates only the actual payload of the packet, and the header information stays intact.
Tunnel mode (supported by Oracle): IPSec encrypts and authenticates the entire packet. After encryption, the packet is then encapsulated to form a new IP packet that has different header information.
Oracle Cloud Infrastructure supports only the tunnel mode for IPSec VPNs.
Each Oracle IPSec VPN consists of multiple redundant IPSec tunnels. For a given tunnel, you can use either Border Gateway Protocol (BGP) dynamic routing or static routing to route that tunnel's traffic. More details about routing follow.
IPSec VPN site-to-site tunnels offer the following advantages:
Public internet lines are used to transmit data, so dedicated, expensive lease lines from one site to another aren't necessary.
The internal IP addresses of the participating networks and nodes are hidden from external users.
The entire communication between the source and destination sites is encrypted, significantly lowering the chances of information theft.
NEW QUESTION 135
In which language are Terraform and Terraform providers written?
- A. Go
- B. C
- C. Ruby
- D. Python
Answer: A
Explanation:
Explanation
References: https://www.terraform.io/docs/extend/writing-custom-providers.html
NEW QUESTION 136
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. Create a reserved public IP and associate it with the subnet of your compute instance
- B. Create a reserved public IP and associate it with the security list that your complete instance is using
- C. Create a reserved public IP and associate it with the hosts file of your web server
- D. Create a reserved public IP and associate it with the VNIC of your compute instance
Answer: D
Explanation:
Explanation
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 137
Which two are valid options when migrating a database from on-premise to Oracle Cloud Infrastructure?
(Choose two.)
- A. converting the Oracle database to a NoSQL database and migrating to Oracle Cloud Infrastructure by using rsync file copy
- B. performing RMAN backup to an on-premise storage device, and then shipping to Oracle Cloud Infrastructure
- C. snapping or cloning storage form on-premise to Oracle Cloud Infrastructure
- D. performing a backup to Oracle Cloud Infrastructure Object Storage, and then restoring to a database server on Oracle Cloud Infrastructure
Answer: B,C
NEW QUESTION 138
You have an application running on Oracle Cloud Infrastructure. You identified that the read and write operations are slowing your application down enough to impair user access. The application is currently using a VM.Standard 1.2 compute without any block storage attached to it.
Which two options allow you to increase disk performance? (Choose two.)
- A. Terminate the compute instance preserving the boot volume. Create a new compute instance using a VM Dense IO shape using the boot volume preserved.
- B. Terminate the compute instance preserving the boot volume. Create a new compute instance using a VM Standard shape and attach a new block volume to host your application.
- C. Create a backup of the boot volume. Create a new compute instance using a VM Dense IO shape and restore the backup.
- D. Terminate the compute instance and create a backup of the boot volume. Create a new compute instance using a VM Dense IO shape and restore the backup.
Answer: A,B
Explanation:
Explanation
You can permanently terminate (delete) instances that you no longer need.By default, the instance's boot volume is deleted when you terminate the instance, however you can preserve the boot volume associated with the instance, so that you can attach it to a different instance as a data volume, or use it to launch a new instance.
You can use a boot volume backup to create an instance or you can attach it to another instance as a data volume. However before you can use a boot volume backup, you need to restore it to a boot volume.
NEW QUESTION 139
Which two methods are supported for migrating your on-premises Oracle database to an Oracle Autonomous Transaction Processing (ATP) database in Oracle Cloud Infrastructure? (Choose two.)
- A. Use database backup and restore.
- B. Use Oracle Data Pump.
- C. Load text files into ATP using SQL Developer.
- D. Use RMAN duplicate.
- E. Transfer the physical database files and re-create the database.
Answer: B,E
Explanation:
Explanation/Reference: https://docs.oracle.com/en/solutions/migrate-to-atp/index.html#GUID-28E5A683-6DC6-4A07- BB1C-55F020D4C1CD
NEW QUESTION 140
You deployed a compute instance (VM.Standard2.16) to run a SQL database. After a few weeks, you need to increase disk performance by using NVMe disks; the number of CPUs will not change. As a first step you terminate the instance and preserve the boot volume.
What is the next step?
- A. Create a new instance using a VM.DenseIO2.16 shape using the preserved boot volume and move the SQL Database data to block volume
- B. Create a new instance using a VM.Standard1.16 shape using the preserved boot volume and move the SQL Database data to NVMe disks
- C. Create a new instance using a VM.DenseIO2.8 shape using the preserved boot volume and move the SQL Database data to NVMe disks
- D. Create a new instance using a VM.DenseIO2.16 shape using the preserved boot volume move the SQL Database data to NVMe disks
Answer: D
Explanation:
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
NEW QUESTION 141
Which three are valid Terraform configuration components? (Choose three.)
- A. data source
- B. variable
- C. region
- D. metadata
- E. resource
- F. instance
Answer: A,B,E
NEW QUESTION 142
Which two options are valid for loading data directly into Autonomous Data Warehouse (ADW)? (Choose two.)
- A. Data Transfer Service
- B. Data Integrator
- C. Data Pump
- D. SQL *Loader
Answer: C,D
NEW QUESTION 143
Which two parameters are required in a back end set's HTTP health check? (Choose two.)
- A. timeout
- B. status code
- C. port
- D. URL path
- E. response body
Answer: C,D
Explanation:
Explanation
https://docs.cloud.oracle.com/iaas/Content/GSG/Tasks/loadbalancing.htm#Create Enter the Health Check details.
Load Balancing automatically checks the health of the instances for your load balancer. If it detects an unhealthy instance, it stops sending traffic to the instance and reroutes traffic to healthy instances. In this step, you provide the information required to check the health of servers in the backend set and ensure that they can receive data traffic.
Protocol: Select HTTP.Port: Enter 80URL Path (URI): Enter /The rest of the fields are optional and can be left blank for this tutorial.
Click Create.
NEW QUESTION 144
You are a network architect of an application running on Oracle Cloud Infrastructure (OCI). Your security team has informed you about a security patch that needs to be applied immediately to one of the backend web servers. What should you do to ensure that the OCI load balancer does not forward traffic to this backend server during maintenance?
- A. Create another OCI load balancer for the backend web servers, which are active and handling traffic
- B. Edit the security list associated with the subnet to avoid traffic connectivity to this backend serve
- C. Drain all existing connections to this backend server and mark the backend web server offline
- D. Stop the load balancer for maintenance and restart the load balancer after the maintenance is finished
Answer: C
Explanation:
A load balancer improves resource utilization, facilitates scaling, and helps ensure high availability. You can configure multiple load balancing policies and application-specific health checks to ensure that the load balancer directs traffic only to healthy instances. The load balancer can reduce your maintenance window by draining traffic from an unhealthy application server before you remove it from service for maintenance.
The Load Balancing service considers a server marked drain available for existing persisted sessions. New requests that are not part of an existing persisted session are not sent to that server.
Edit Drain State: Opens a dialog box in which you can change the drain state.
If you set the server's drain status to true, the load balancer stops forwarding new TCP connections and new non-sticky HTTP requests to this backend server.
This setting allows an administrator to take the server out of rotation for maintenance purposes.
e. Edit Offline State: Opens a dialog box in which you can change the offline status.
If you set the server's offline status to true, the load balance forwards no ingress traffic to this backend server.
NEW QUESTION 145
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 so you have provisioned one using the file storage service (FSS).
You also created the corresponding mount target in one of the application subnets. The VCN security lists are properly configured so that both application servers and the DB system can access the file system. The security team determines that the DB System should have read-only access to the file system.
What change should you make to satisfy this requirement?
- A. Connect via SSH to one of the application servers where the file system has been mounted. Use the Unix command chmod to change permissions on the file system directory, allowing the database user read only access.
- B. 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.
- C. 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.
- D. Create an NFS export option that allows READ_ONLY access where the source is the CIDR range of the DB System subnet.
Answer: D
NEW QUESTION 146
Which two options are available within the service console of Autonomous Transaction Processing?
- A. Perform a manual backup of the ATP database
- B. Monitor the health of the database server including CPU, memory and query performance
- C. Configure resource management rules and reset the admin password
- D. Fine tune a long running query using optimizer hints
Answer: B,C
Explanation:
NEW QUESTION 147
You work for a health insurance company that stores a large number of patient health records in an Oracle Cloud Infrastructure (OCI) Object Storage bucket named "HealthRecords".
Each record needs to be securely stored for a period of 5 years for regulatory compliance purposes and cannot be modified, overwritten or deleted during this time period.
What can you do to meet this requirement?
- A. Enable encryption on the HealthRecords bucket using your own vault master encryption keys.
- B. Create an OCI Object Storage time-bound Retention Rule on the HealthRecords bucket for five years.
Enable Retention Rule Lock on this bucket. - C. Enable versioning on the HealthRecords bucket.
- D. Create an OCI Object Storage Lifecycle Policies rule to archive objects in the HealthRecords bucket for five years.
Answer: B
Explanation:
Reference:
https://docs.cloud.oracle.com/en-us/iaas/Content/Object/Tasks/usingretentionrules.htm
NEW QUESTION 148
Which two statements about fault domains are true? (Choose two.)
- A. A failed instance in a fault domain is automatically relaunched
- B. A fault domain is a grouping of hardware and infrastructure within an availability domain
- C. A fault domain is selected automatically based on usage data
- D. Each availability domain contains three fault domains
Answer: B,D
Explanation:
References:
A fault domain is a grouping of hardware and infrastructure within an availability domain. Each availability domain contains three fault domains. Fault domains provide anti-affinity: they let you distribute your instances so that the instances are not on the same physical hardware within a single availability domain.
NEW QUESTION 149
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