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質問 152
You are a network architect and have designed the network infrastructure of a three-tier application on Oracle Cloud Infrastructure (OCI). In the architecture, back-end DB servers are in a private subnet. One of your DB administrators requests to have access to OCI object storage service.
How can you meet this requirement?
- A. Attach a public IP address to the instances in the private subnet, and then add a new route rule to the private subnet route table to route default traffic to the internet gateway.
- B. Create a service gateway, add a new route rule to the private subnet route table that uses object storage as target type.
- C. Add a new route rule to the private subnet route table to route default traffic to the internet gateway.
- D. Create a dynamic routing gateway (DRG) and attach it to your virtual cloud network (VCN). Add a default route rule to the private subnets route table and set the target as DRG.
正解: B
解説:
A service gateway lets resources in your VCN privately access specific Oracle services, without exposing the data to an internet gateway or NAT. The resources in the VCN can be in a private subnet and use only private IP addresses. The traffic from the VCN to the service of interest travels over the Oracle network fabric and never traverses the internet.
To give your VCN access to a given service CIDR label, you must enable that service CIDR label for the VCN's service gateway. You can do that when you create the service gateway, or later after it's created. You can also disable a service CIDR label for the service gateway at any time.
For traffic to be routed from a subnet in your VCN to a service gateway, you must add a rule accordingly to the subnet's route table. The rule must use the service gateway as the target.
質問 153
Which two options are available when setting up DNS for your bare metal and virtual machine DB Systems?
(Choosetwo.)
- A. Internet and virtual cloud network (VCN) resolver
- B. custom resolver
- C. Google DNS servers
- D. Internet and custom resolver
正解: A,B
質問 154
A new employee has just started working for your company. You create an Oracle Cloud Infrastructure user account for this employee, following which they areable to log in, but still cannot create any resources.
What should you do to resolve this?
- A. Make sure that the employee is logging in to the Oracle Cloud Infrastructure account from your corporate network only.
- B. Add the employee to a group with policies to grant access to relevant resources.
- C. Delete the account and create another one.
- D. Send the employee API Signing Keys to log in.
正解: B
質問 155
Which two are a valid image source when launching a new compute instance? (Choose two.)
- A. object storage
- B. boot volume
- C. bare metal instance
- D. custom image
正解: B,D
解説:
Explanation
https://docs.cloud.oracle.com/en-us/iaas/Content/Resources/Assets/whitepapers/deploying-custom-os-images.pdf A template of a virtual hard drive that determines the operating system and other software for an instance. For details about Oracle Cloud Infrastructure platform images, see Oracle-Provided Images. You can also launch instances from:
Trusted third-party images published by Oracle partners from the Partner Image catalog. For more information about partner images, see Overview of Marketplace and Working with Listings.
Pre-built Oracle enterprise images and solutions enabled for Oracle Cloud Infrastructure Custom images, including bring your own image scenarios.
Boot Volumes.
Bottom of Form
質問 156
Which three can you achieve by using Terraform? (Choose three.)
- A. Automatically destroy all the resources that are in tenancy.
- B. Automatically translate a deployed infrastructure and create a plan.
- C. Continuously maintain the configuration files in an instance.
- D. Automatically re-provision the resources that are tainted or whose configuration has changed.
- E. Create resources in the right order without regard to the order in the terraform plan file.
正解: A,D,E
質問 157
For a compute instancethat is launched in a private subnet in a Virtual Cloud Network (VCN), which action needs to be performed to connect to the Internet, assuming that the required security list is properly set up?
- A. Create and configure Network Address Translation (NAT) in a public subnet and route all traffic to it.
- B. There is no way for an instance in a private subnet to connect to the Internet.
- C. Assign a Public IP address to the compute instance.
- D. Create a default route entry in the route table to forward all traffic to the Internet gateway.
正解: D
質問 158
Which statement is true about Oracle Cloud Infrastructure (OCI) object storage support for server-side encryption?
- A. Only the object data is encrypted and the user-defined metadata that is associated with the object is not encrypted
- B. You must manually enable server-side encryption for each object as you upload to OCI object storage
- C. You must manually decrypt the data when retrieving from OCI object storage
- D. Objects are automatically encrypted as they are uploaded to object storage and decrypted upon retrieval
正解: D
解説:
Explanation
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 automaticallyencrypted
- 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.
質問 159
Which storage would you use if your big data workload requires shared access and an NFS based interface?
- A. Object Storage
- B. Block Volume
- C. Archive Storage
- D. File Storage
- E. Storage Software Cloud Appliance
正解: D
解説:
Reference:
The File Storage service is designed to meet the needs of applications and users that need an enterprise file system across a wide range of use cases, including the following:
General Purpose File Storage: Access to an unlimited pool of file systems to manage growth of structured and unstructured data.
Big Data and Analytics: Run analytic workloads and use shared file systems to store persistent data.
Lift and Shift of Enterprise Applications: Migrate existing Oracle applications that need NFS storage, such as Oracle E-Business Suite and PeopleSoft.
Databases and Transactional Applications: Run test and development workloads with Oracle, MySQL, or other databases.
Backups, Business Continuity, and Disaster Recovery: Host a secondary copy of relevant file systems from on premises to the cloud for backup and disaster recovery purposes.
MicroServices and Docker: Deliver stateful persistence for containers. Easily scale as your container-based environments grow.
質問 160
You have multiple applicationsinstalled on a compute instance and these applications generate a large amount of log files. These log files must reside on the boot volume for a minimum of 15 days and must be retained for at least 60 days. The 60-day retention requirement is causing an issue with available disk space.
What are the two recommended methods to provide additional boot volume space for this compute instance?
(Choose two.)
- A. Create an object storage bucket and use a script that runs daily to move log files older than 15 days to the bucket.
- B. Write a custom script to remove the log files on a daily basis and free up the space on the boot volume.
- C. Create and attach a block volume to the compute instance and copythe log files.
- D. Terminate the instance while preserving the boot volume. Create a new instance from the boot volume and select a DenseIO shape to take advantage of local NVMe storage.
- E. Create a custom image and launch a new compute instance with a larger boot volume size.
正解: A,E
解説:
Explanation
These log files must resideon the boot volume for a minimum of 15 days so you have to increase the boot Volume
質問 161
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?
- A. Create a new instance using a VM.DenseIO2.8 shape using the preserved boot volume and move the SQL Database data to NVMe disks
- B. Create a new instance using a VM.DenseIO2.16 shape using the preserved boot volume and move the SQL Database data to block volume
- C. Create a new instance using a VM.Standard1.16 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
正解: D
解説:
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
質問 162
Which statement Is true about Data Guard implementation in Oracle Cloud Infrastructure (OCI) bare metal and virtual machine database systems?
- A. Primary and standby database versions and editions need not be Identical.
- B. Primary and standby databases must be in the same OCI region.
- C. Both database systems must be in the same compartment.
- D. Database systems need not be the same shape type (e.g, primary database can be a virtual machine, and standby database a bare metal shape, and vice versa).
正解: C
質問 163
What is the maximum number of security lists that can be associated with a subnet?
- A. five
- B. four
- C. three
- D. two
正解: A
解説:
you may optionally specify one or more security lists for the subnet to use (up to five). If you don't specify any, the subnet uses the cloud network's default security list. You can change which security list the subnet uses at any time.
https://docs.cloud.oracle.com/iaas/Content/Network/Tasks/managingVCNs.htm
質問 164
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. Stop the load balancer for maintenance and restart the load balancer after the maintenance is finished
- C. Drain all existing connections to this backend server and mark the backend web server offline
- D. Edit the security list associated with the subnet to avoid traffic connectivity to this backend serve
正解: C
解説:
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 availablefor 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 whichyou 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.
質問 165
Which storage service is used on OCI for a Data Transfer Service job?
- A. A File System service instance
- B. BlockVolume
- C. An object bucket
- D. An instance with enough storage to accommodate the job
正解: C
解説:
Explanation
https://docs.cloud.oracle.com/en-us/iaas/Content/DataTransfer/Concepts/overview.htm
質問 166
What is the maximum IP address size range that you can have in a Virtual Cloud Network?
- A. /16
- B. /8
- C. /26
- D. /24
正解: A
解説:
When you create your VCN, you assign a contiguous IPv4 CIDR block of your choice. VCN sizes ranging from /16 (65,533 IP addresses) to /30 (1 IP address) are allowed. Example: 10.0.0.0/16, 192.168.0.0/24.
質問 167
For what business need should you use Database Cloud Service (DBCS) instead of Oracle database on a compute instance?
- A. to build an Oracle database on a compute service
- B. to lower license and infrastructure cost
- C. toimplement Oracle RAC for high availability
- D. to bring your own license on a compute service
正解: C
質問 168
You have a working application in the US East region. The app is a 3-tier app with a database backend - you take regular backups of the database into OCI Object Storage in the US East region. For Business continuity; you are leveraging OCI Object Storage cross-region copy feature to copy database backups to the US West region. Which of the following three steps do you need to execute to meet your requirement?
- A. Specify an existing destination bucket
- B. Specify the bucket visibility for both the source and destination buckets
- C. Write an IAM policy and authorize the Object Storage service to manage objects on your behalf
- D. Provide an option to choose bulkcopying of objects
- E. Provide a destination object name
- F. Choose an overwrite rule
正解: A,C,F
解説:
Explanation
You can copy objects to other buckets in the same region and to buckets in other regions.
You must have the required access to both the source and destination buckets when performing an objectcopy.
You must also have permissions to manage objects in the source and destination buckets.
Because Object Storage is a regional service, you must authorize the Object Storage service for each region carrying out copy operations on your behalf. For example, you might authorize the Object Storage service in region US East (Ashburn) to manage objects on your behalf. Once you authorize the Object Storage service, you can copy an object stored in a US East (Ashburn) bucket to a bucket in another region.
You can use overwrite rules to control the copying of objects based on their entity tag (ETag) values.
Specify an existing target bucket for the copy request. The copy operation does not automatically create buckets.
質問 169
Which two statements are true about Autonomous Data Warehouse (ADW) backup?
- A. You can perform manual backups to OCI object storage in addition to automated backups available on ADW
- B. You must backup ADW database to object storage bucket named ADW_backup
- C. Oracle Cloud Infrastructure (OCI) recommends backing up ADW databases manually to on-premises storage devices
- D. You can backup ADW database only to a standard bucket type in OCI object storage
正解: A,D
解説:
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)
質問 170
Which two statements are true about an Oracle Cloud Infrastructure (OCI) virtual cloud network (VCN)?
(Choose two.)
- A. A VCN can have multiple CIDR blocks associated with it.
- B. In regions with multiple Availability Domains (AD), each AD should have their own VCN assigned to it.
- C. If you own a block of public IPs, you can assign it to one of your VCNs.
- D. A VCN covers a single, contiguous IPv4 CIDR block of your choice.
- E. To delete a VCN, its subnets must contain no resources.
正解: D,E
質問 171
Which two statements are true regarding cloning a block volume?
- A. You can change the block volume performance when creating a clone
- B. You can skip block volume encryption when creating a clone
- C. You can change the block volume size when creating a clone
- D. You can clone block volumes across regions
正解: A,C
解説:
Explanation
Youcan create a clone from a volume using the Block Volume service. Cloning enables you to make a copy of an existing block volume without needing to go through the backup and restore process.
A cloned volume is a point-in-time direct disk-to-disk deep copyof the source volume, so all the data that is in the source volume when the clone is created is copied to the clone volume.
You can only create a clone for a volume within the same region, availability domain and tenant. You can create a clone for a volumebetween compartments as long as you have the required access permissions for the operation.
during create a clone you can do the following
If you want to clone the block volume to a larger size volume, check Custom Block Volume Size (GB) and then specifythe new size. You can only increase the size of the volume, you cannot decrease the size. If you clone the block volume to a larger size volume, you need to extend the volume's partition. See Extending the Partition for a Block Volume for more information.
If you want to change the elastic performance setting when cloning the volume, check Custom Block Volume Performance and select the elastic performance setting you want the volume clone to use. See Block Volume Elastic Performance for more information. You can also change the elastic performance setting after you have cloned the volume, see Block Volume Elastic Performance. If you leave Custom Block Volume Performance unchecked, the cloned volume will use the same elastic performance setting as the source volume.
質問 172
You are about to deploy an e-business application on Oracle Cloud Infrastructure and one of the requirements is to use a shared file system that supports the NFS protocol.
Which storage service would meet this requirement?
- A. file storage
- B. object storage
- C. block volume
- D. data transfer appliance
正解: A
解説:
Use the File Storage service when your application or workload includes big data and analytics, media processing, or content management, and you require Portable Operating System Interface (POSIX)-compliant file system access semantics and concurrently accessible storage. The File Storage service is designed to meet the needs of applications and users that need an enterprise file system across a wide range of use cases, including the following:
General Purpose File Storage: Access to an unlimited pool of file systems to manage growth of structured and unstructured data.
Big Data and Analytics: Run analytic workloads and use shared file systems to store persistent data.
Lift and Shift of Enterprise Applications: Migrate existing Oracle applications that need NFS storage, such as Oracle E-Business Suite and PeopleSoft.
Databases and Transactional Applications: Run test and development workloads with Oracle, MySQL, or other databases.
Backups, Business Continuity, and Disaster Recovery: Host a secondary copy of relevant file systems from on premises to the cloud for backup and disaster recovery purposes.
MicroServices and Docker: Deliver stateful persistence for containers. Easily scale as your container-based environments grow.
質問 173
As the Cloud Architect for your company, you have been tasked with designing a high performance (HPC) cluster in Oracle Cloud Infrastructure (OCI). The following requirements have been defined:
* The cluster must be a minimum of three nodes, but may increase to six nodes when demand requires.
* The cluster must be resilient to any potential infrastructure failures.
* To minimize latency, all nodes must be deployed within the same availability domain (AD).
* Adding or replacing nodes within the cluster should take no more than 30 minutes.
Which twosteps should be performed to satisfy these requirements in OCI? (Choose two.)
- A. Deploy the cluster in a single AD. Place each of the nodes in a different virtual cloud network (VCN) subnet.
- B. Create a custom image of your HPC node compute instance. Launch new compute instances using this image to reduce provisioning time.
- C. Deploy the cluster in a single AD with a shared file system that leverages the file storage service (FSS).
Deploy a standby cluster in another AD and configure it to use thesame shared file system. - D. Create a backup of your HPC node compute instance boot volume. Launch new compute instances directly from thebackup reduce provisioning time.
- E. Deploy the cluster in a single AD. Place each of the nodes in one of the three different fault domains in that AD.
正解: B,E
解説:
Explanation
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. A hardware failure or Compute hardware maintenance event that affects one fault domain does not affect instances in other fault domains. In addition, thephysical hardware in a fault domain has independent and redundant power supplies, which prevents a failure in the power supply hardware within one fault domain from affecting other fault domains.
To control the placement of your compute instances, bare metal DB system instances, or virtual machine DB system instances, you can optionally specify the fault domain for a new instance or instance pool at launch time. If you don't specify the fault domain, the system selects one for you. Oracle Cloud Infrastructure makes a best-effort anti-affinity placement across different fault domains, while optimizing for available capacity in the availability domain. To change the fault domain for an instance, terminate it and launch a new instance in the preferred fault domain.
Use fault domains to do the following things:
Protect against unexpected hardware failures or power supply failures.
Protect against planned outages because of Compute hardware maintenance.
質問 174
Which two statements are true when Oracle Data Guard is configured (usingthe Console) between two Virtual Machine DB Systems deployed in Oracle Cloud Infrastructure? (Choose two.)
- A. Primary is a Bare Metal DB system and Standby is a 1-node RAC DB system.
- B. Primary is a 1-node RAC DB system and Standby is a 2-node RAC DB system.
- C. Primary is a 2-node RAC DB system and Standby is a 2-node RAC DB system.
- D. Primary is a 1-node RAC DB system and Standby is a 1-node RAC DB system.
- E. Primary is a 2-node RAC DB system and Standby is a 1-node RAC DB system.
正解: B,D
解説:
Reference:https://docs.cloud.oracle.com/en-us/iaas/Content/Database/Concepts/overview.htm
質問 175
Which scaling option does Database Cloud Service (DBCS) on Bare Metal Shape offer?
- A. storage
- B. CPU
- C. memory
- D. network bandwidth
正解: B
質問 176
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