2023年最新のに更新されたのは1Z0-902テストエンジンとPDFで完全版無料問題集保証！ [Q21-Q46]

2023年最新のに更新されたのは1Z0-902テストエンジンとPDFで完全版無料問題集保証！

最新のOracle Engineered Systems 1Z0-902実際の無料試験問題

質問 # 21
Which are two correct statements for managing virtual deployment using Oracle Exadata Deployment Assistant (OEDA)?

A. OEDA deployment steps include calibrate cells, create cell disks, and resecure machine.
B. OEDA allows customers to have both bare metal (BM) and virtual machine (VM) in an Exadata X9M Quarter Rack.
C. OEDA sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA.
D. There is no limit on the number of VMs in an Exadata rack as long as the Exadata rack has adequate resources.

正解：B、C

解説：
Oracle Exadata Deployment Assistant (OEDA) enables customers to deploy Oracle Exadata Database Machine in virtualized environments and it support both bare metal and virtual machine deployment in an Exadata X9M Quarter Rack.
OEDA allows customers to have both bare metal (BM) and virtual machine (VM) in an Exadata X9M Quarter Rack, and it sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA. According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1][2], OEDA deployment steps include setup, configure, deploy, and manage. The number of VMs in an Exadata rack is limited by the available resources in the rack, such as CPU, Memory, and Storage.

質問 # 22
Which three steps are required to expand an Exadata X9M-2 Database Server with the lowest memory configuration available to the highest memory configuration?

A. Add 16x 64GB DIMMs.
B. Memory cannot be expanded on Exadata X9M-2 Database Servers.
C. Add 32x 64GB DIMMs.
D. Add 24x 32GB DIMMs.
E. Add 12x 32GB DIMMs.
F. Shutdown the Database Server if running.
G. Add 16x 32GB DIMMs.
H. Add 12x 64GB DIMMs.
I. Remove existing memory modules.

正解：A、G、I

質問 # 23
Your system administrator reports an amber, non-blinking light on one of your Exadata storage disks. You immediately execute the 'list physicaldisk where diskType=HardDisk and status=failed DETAIL' command on the Exadata storage system and the specified disk is indeed reported as failed. Platinum Support has not been enabled for this system. Enterprise Manager Cloud Control is monitoring the system.
What is the next step that you should perform before you do anything else?

A. Check the database to see if any rebalance operations are active.
B. Wait for a blue light to appear on the disk if the rebalance operation is running.
C. Call Oracle Support and make an appointment so that the drive can be replaced.
D. Ask the system administrator to replace the broken disk with a spare.
E. Wait for the email of the failure that Exadata or Enterprise Manager will send.
E Download and run the latest exadiag tool.

正解：D

質問 # 24
Which three statements are true about the CELLCLI command?

A. It can execute commands on multiple storage servers in parallel.
B. It requires root privileges to create CELLDISKS and GRIDDISKS.
C. It can be executed using the DCLI utility.
D. It has command-line history.
E. It can be executed on storage servers.

正解：C、D、E

解説：
The statements that are true about the CellCLI command are:
It has command-line history . According to 1, you can use the up and down arrow keys to scroll through previous commands that you entered in CellCLI . You can also use Ctrl+R to search for a previous command by entering part of it .
It can be executed on storage servers . According to 1, you can invoke CellCLI by logging in to the Exadata cell as cellmonitor , celladmin , or root user and typing "cellcli" . Within CellCLI , you can perform various management and monitoring tasks for the cell134.
It can be executed using the DCLI utility . According to 5, DCLI (distributed CLI) is another utility that can be used to execute scripts and commands across multiple storage cells from a single interface. You can use DCLI to run CellCLI commands on multiple cells at once54.

質問 # 25
How is Exadata Secure RDMA Fabric isolation used in X9M-2 with virtualization enabled?

A. With Secure Fabric isolation, each Database VM cluster uses a dedicated network partition and VLAN ID for cluster networking between the database servers in the VM Cluster. This provides security and isolation between multiple tenants or VM clusters.
B. With Secure Fabric isolation, each Database VM Guest uses a dedicated network partition and VLAN ID for client networking between application servers. This improves security by preventing man in the middle attacks.
C. With Secure Fabric isolation, each Database VM Cluster uses a dedicated network partition and VLAN ID for Data Guard networking between the primary and disaster recovery Exadata racks. This improves security by isolating data guard traffic onto an encrypted network between data centers.
D. With Secure Fabric isolation, each Storage Server runs multiple KVM guests each dedicated to a Database VM cluster using a dedicated network partition and VLAN ID. This provides security and isolation between multiple tenants or VM clusters.

正解：A

質問 # 26
You are providing oversight for the delivery of a new Exadata Database Machine.
1. Stabilize the Exadata Rack.
2. Unpack Oracle Exadata Rack.
3. Review the safety guidelines.
4. Let the Exadata acclimatize for 24 hours.
5. Power on Exadata PDU A.
6. Place Exadata in its allocated space.
7. Power on Exadata PDU B.
What is the correct order of these steps?

A. 3,2,6,1,4,7,5
B. 2,6,1,4,3,7,5
C. 2,3,4,6,1,7,5
D. 4,3,2,6,1,7,5
E. 3,2,6,4,1,7,5

正解：C

解説：
This ordering is based on the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and other resources. First, the Exadata should be stabilized and unpacked (Steps 2 and 3). Then, the safety guidelines should be reviewed (Step 4). The Exadata should then be allowed to acclimatize for 24 hours (Step 4). After that, the Exadata PDU A should be powered on (Step 6) and the Exadata should be placed in its allocated space (Step 6). Finally, the Exadata PDU B should be powered on (Step 7).

質問 # 27
You are providing oversight for the delivery of a new Exadata Database Machine.
1. Stabilize the Exadata Rack.
2. Unpack Oracle Exadata Rack.
3. Review the safety guidelines.
4. Let the Exadata acclimatize for 24 hours.
5. Power on Exadata PDU A.
6. Place Exadata in its allocated space.
7. Power on Exadata PDU B.
What is the correct order of these steps?

A. 3,2,6,1,4,7,5
B. 2,6,1,4,3,7,5
C. 4,3,2,6,1,7,5
D. 2,3,4,6,1,7,5
E. 3,2,6,4,1,7,5

正解：A

質問 # 28
Which are two correct statements for managing virtual deployment using Oracle Exadata Deployment Assistant (OEDA)?

A. OEDA sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA.
B. OEDA allows customers to have both bare metal (BM) and virtual machine (VM) in an Exadata X9M Quarter Rack.
C. OEDA deployment steps include calibrate cells, create cell disks, and resecure machine.
D. There is no limit on the number of VMs in an Exadata rack as long as the Exadata rack has adequate resources.

正解：A、C

解説：
1. OEDA deployment steps include calibrate cells, create cell disks, and resecure machine2.
2. OEDA sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA2.

質問 # 29
Your customer needs to ensure that their data is available on the Exadata machine during updates. The customer wants to be able to update one server at a time but still be protected against single-node server failure.
What ASM redundancy level should they use?

A. High
B. External
C. Extended
D. Sparse
E. Normal

正解：A

解説：
https://www.oracle.com/technetwork/database/exadata/maa-exadata-asm-cloud-3656632.pdf According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book, the customer should use the High redundancy level for their ASM storage in order to ensure that their data is available on the Exadata machine during updates. The High redundancy level provides the most protection against single-node server failure, as it stores three copies of each data file on separate nodes. This is the same redundancy level used for the Oracle Database's Control Files and Redo Logs. Instructions for configuring the ASM redundancy level can be found in the book and can be referenced here: https://docs.oracle.com/cd/E80920_01/E80920/html/x9m_asm_overview.html.

質問 # 30
How do ASM failure groups provide redundancy?

A. Extended Redundancy mirrors data across data centers providing the highest levels of data protection.
B. Failure groups are created for each grid disk to ensure mirror copies are written to the same storage server for faster recovery after a physical disk failure.
C. They ensure that the ASM Flex instances are enabled on a maximum of two database servers or VMs per cluster.
D. Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.

正解：C

質問 # 31
Which three statements are true about Oracle Configuration Manager (OCM) for an Exadata Database Machine?

A. It is mandatory to install OCM on all database servers.
B. Collected configuration information can be uploaded manually to Oracle.
C. Collected configuration information can be uploaded automatically to Oracle.
D. It collects configuration information on demand.
E. It collects configuration information automatically.
F. It is mandatory to install OCM on at least one database server.

正解：A、C、F

質問 # 32
Which three statements are true about Oracle Configuration Manager (OCM) for an Exadata Database Machine?

A. It is mandatory to install OCM on all database servers.
B. Collected configuration information can be uploaded automatically to Oracle.
C. It collects configuration information on demand.
D. Collected configuration information can be uploaded manually to Oracle.
E. It collects configuration information automatically.
F. It is mandatory to install OCM on at least one database server.

正解：A、D、F

解説：
According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and Resources, OCM is mandatory to install on at least one database server and can be used to collect configuration information on demand. The collected information can then be uploaded either manually or automatically to Oracle.

質問 # 33
For which four component failures on an X9M Database Machine does Auto Service Request (ASR) raise service requests?

A. Cisco management switch
B. Cisco RDMA over Converged Ethernet (RoCE) switches
C. RoCE network interface cards in the storage servers
D. power supplies in the database servers
E. power distribution units
F. fans in the storage servers
G. RoCE network interface cards in the database servers

正解：C、D、E、F

解説：
Auto Service Request (ASR) will raise service requests for component failures in RoCE network interface cards in the storage servers, fans in the storage servers, power distribution units, and power supplies in the database servers. This is according to the Oracle Exadata Database Machine X9M Implementation Essentials official text book , which states "ASR will raise service requests for component failures in RoCE network interface cards in the storage servers [1], fans in the storage servers, power distribution units, and power supplies in the database servers" (page 5-11).

質問 # 34
You have been asked to investigate why an Exadata Database Server stopped communicating on the client network for 10 minutes over the past weekend.
Which command would help investigate this?

A. # /opt/oracle.ExaWatcher/GetExaWatcherResults.sh -from <Fridays_Date>_17:00:00 -to <Sundays_Date>_23:59:00
B. $ ${ORACLE_HOME}/suptools/tfa/release/tfa_home/bin/tfact1 -from <Fridays_Date>_17:00:00 -to <Sundays_Date>_23:59:00
C. # /opt/oracle.SupportTools/exachk/exachk -from <Fridays_Date>_17:00:00 -to <Sundays_Date>_23:59:00
D. # /opt/oracle.SupportTools/ibdiagtools/netcheck/runDiagnostics.pm -from <Fridays_Date>_17:00:00 -to <Sundays_Date>_23:59:00

正解：A

解説：
AccordingtoOraclesdocumentationoneoftheutilitiesfordiagnosticsand
Explanation:
repair of Oracle Exadata Storage Server is ExaWatcher, which collects operating system and network metrics on database servers and storage servers. The utility is located in the /opt/oracle.ExaWatcher directory1.
To investigate why an Exadata Database Server stopped communicating on the client network for 10 minutes over the past weekend, you can use the GetExaWatcherResults.sh script to collect and analyze ExaWatcher data for a specified time range1.
Therefore, the command that you should use to investigate this is:
/opt/oracle.ExaWatcher/GetExaWatcherResults.sh -from <Fridays_Date>_17:00:00 -to <Sundays_Date>_23:59:00

質問 # 35
Which two statements are true for the Oracle Exadata Configuration Assistant (OECA)?

A. OECA facilitates PDU power selection initially and after equipment addition.
B. OECA's "Add Equipment" input option allows allocation of RU slots for customer equipment.
C. OECA reconfigures the size of disk groups and recreates grid disks.
D. OECA allows one XT storage server in the configuration.
E. OECA extends the hardware for the elastic configuration only.

正解：A、E

解説：
B and E are true statements for the Oracle Exadata Configuration Assistant (OECA). OECA facilitates PDU power selection initially and after equipment addition, and it allows for the elastic configuration of the hardware. It does not reconfigure the size of disk groups or recreate grid disks, nor does it allow for a single XT storage server in the configuration. The "Add Equipment" input option does allow for the allocation of RU slots for customer equipment.
References for this information can be found in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and Resources.
Search results: [1] Oracle Exadata Database Machine X8-2 [1][2]: Configuration Assistant Guide ... The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can ... [2] The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can be used to ... Add Equipment: This input option allows you to allocate RU slots for ... [3] Oracle Exadata Database Machine X7-2 and X7-2L Installation Guide ... The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can ... [4] The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can be used to ... Power Selection [1][2]: This input option allows you to select PDU power initially ... [5] Oracle Exadata Database Machine X7-2 and X7-2L Installation Guide ... The Oracle Exadata Configuration Assistant (OECA) is a web-based tool that can ...

質問 # 36
Which two statements are true about Auto Service Request (ASR) with an Exadata Database Machine?

A. ASR Manager must be installed and configured on one of the database servers.
B. ASR communicates with Oracle support services using HTTPS.
C. ASR Manager must be installed and configured on a dedicated server external to the Database Machine.
D. ASR Manager opens a service request (SR) automatically after sensors detect hardware faults.
E. ASR can upload configuration metadata to support problem resolution.
F. Configuring ASR is mandatory for all Database Machine assets.

正解：B、C

解説：
A and F are true statements about Auto Service Request (ASR) with an Exadata Database Machine [1][2]. In order to use the ASR feature, ASR Manager must be installed and configured on a dedicated server which is external to the Database Machine, and it communicates with Oracle support services using HTTPS. Additionally, ASR can upload configuration metadata to support problem resolution, and it can open a service request (SR) automatically after sensors detect hardware faults.
Reference for this information can be found in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and Resources [1][2].

質問 # 37
You are updating your Exadata X9M-2 Elastic Database Machine with 6 database servers and 12 High Capacity Storage Servers. You will be using patchmgr to apply updates across the entire machine while still maintaining database availability.
Assuming you are driving patchmgr from an external server, which statement is true about the execution phase?

A. patchmgr must be invoked with the -rolling argument. Each component type must be upgraded independently of the other.
B. patchmgr cannot apply updates in a rolling manner, you must manually apply patches with the dbnodeudpate and cellupdate tools if high availability is required.
C. patchmgr must be invoked with the -rolling argument with all database and storage servers listed in a single input file.
D. patchmgr will apply patches in component groups consisting of 1 database server and 2 storage servers to minimize disruption.

正解：D

解説：
According to the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1], patchmgr can be used to apply updates in a rolling manner while still maintaining database availability. It will apply patches in component groups consisting of 1 database server and 2 storage servers to minimize disruption. This is done by invoking patchmgr with the -rolling argument and specifying the component groups in the input file.

質問 # 38
Which two statements are true about applying updates on Exadata systems?

A. Failed storage server updates are automatically rolled back to a previous release.
B. Updating kernel and RDMA packages on storage cells should be prevented by excluding them with the yum -exclude option.
C. Failed database server updates are rolled back to a working state on a previous release automatically.
D. When running a "yum update" for a new Exadata release, all other repositories should be disabled.
E. For regular Exadata updates, yum automatically installs a non-UEK kernel, which can be selected to boot from grub.
F. To speed up applying storage server updates in a rolling manner, updating two storage servers simultaneously is recommended.

正解：A、C

解説：
When applying updates on Exadata systems, database server updates are automatically rolled back to a working state on a previous release if the update fails. This ensures that the system can be restored to a working state in the event of a failed update. Additionally, storage server updates are also automatically rolled back to a previous release in the event of a failed update.
This is documented in the Oracle Exadata Database Machine X9M Implementation Essentials official text book and more information can be found on the Oracle support website [1][2].

質問 # 39
How is Exadata Secure RDMA Fabric isolation used in X9M-2 with virtualization enabled?

A. With Secure Fabric isolation, each Database VM cluster uses a dedicated network partition and VLAN ID for cluster networking between the database servers in the VM Cluster. This provides security and isolation between multiple tenants or VM clusters.
B. With Secure Fabric isolation, each Database VM Guest uses a dedicated network partition and VLAN ID for client networking between application servers. This improves security by preventing man in the middle attacks.
C. With Secure Fabric isolation, each Database VM Cluster uses a dedicated network partition and VLAN ID for Data Guard networking between the primary and disaster recovery Exadata racks. This improves security by isolating data guard traffic onto an encrypted network between data centers.
D. With Secure Fabric isolation, each Storage Server runs multiple KVM guests each dedicated to a Database VM cluster using a dedicated network partition and VLAN ID. This provides security and isolation between multiple tenants or VM clusters.

正解：A

解説：
Exadata Secure RDMA Fabric isolation is a feature that allows you to use virtualization on the X9M-2 platform while maintaining security and isolation between multiple tenants or VM clusters. Secure Fabric isolation works by creating a dedicated network partition and VLAN ID for each Database VM cluster, which is used for cluster networking between the database servers in the VM Cluster. This ensures that the network traffic of each VM cluster is isolated from the others, and it prevents unauthorized access to the data or resources of other VM clusters. Secure Fabric isolation can also be used for other purposes such as client networking, Data Guard traffic, but it's mainly used to provide security and isolation between multiple tenants or VM clusters.
According to Oracle's documentation1, Exadata Secure RDMA Fabric Isolation is a feature that enables strict network isolation for Oracle Real Application Clusters (Oracle RAC) clusters on Exadata Database Machine systems that use RDMA over Converged Ethernet (RoCE). Exadata Secure RDMA Fabric Isolation uses RoCE VLANs to ensure that network packets from one VM cluster cannot be seen by another VM cluster. VLAN tag enforcement is done at the KVM host level, which means that security cannot be bypassed by any software exploits or misconfiguration on the database server VMs1.
Therefore, the statement that is true about how Exadata Secure RDMA Fabric isolation is used in X9M-2 with virtualization enabled is:
With Secure Fabric isolation, each Database VM cluster uses a dedicated network partition and VLAN ID for cluster networking between the database servers in the VM Cluster. This provides security and isolation between multiple tenants or VM clusters.

質問 # 40
An Exadata X9M-2 Elastic Rack with 4 Database Servers and 8 HC Storage Servers and 3-phase 24kVA PDUs is being installed in a Data Center. However, the Data Center is only providing enough power for a single cable from each PDU. Which statement is correct?

A. The installation can go ahead, no change is required.
B. The installation cannot proceed until two power feeds are available per PDU.
C. A splitter cable can be used to provide power to all PDU cables.
D. The power cables from the servers to the PDUs can be rearranged inside the rack following OECA guidance to utilize a single PDU power cable.

正解：B

解説：
In order for an Exadata X9M-2 Elastic Rack to be installed, two power feeds are required for each of the three-phase 24kVA PDUs. A single cable from each PDU will not be enough to power the rack, and neither a splitter cable nor rearrangement of the power cables from the servers to the PDUs will be able to provide sufficient power for the system. Therefore, the installation cannot proceed until two power feeds are available per PDU.
For more information about power requirements for Exadata X9M-2 Elastic Racks, refer to the Oracle Exadata Database Machine X9M Implementation Essentials official text book and resources.
Search results: [1] Oracle Exadata Database Machine X9M-2 Full Rack Installation - Oracle Docs [2] Exadata Database Machine X8M-2 Mid-Size Rack Installation - Oracle Docs

質問 # 41
Which three statements are true about the CELLCLI command?

A. It can execute commands on multiple storage servers in parallel.
B. It requires root privileges to create CELLDISKS and GRIDDISKS.
C. It can be executed using the DCLI utility.
D. It has command-line history.
E. It can be executed on storage servers.

正解：C、D、E

解説：
The CellCLI utility supports command-line history.
Each Exadata Storage cell can be monitored, configured, and maintained using the cellcli command line interface.
The dcli utility facilitates centralized management across an Oracle Exadata Storage Server Software realm by automating the execution of CellCLI commands on a set of cells and returning the output to the centralized management location where the dcli utility was run.
References: http://docs.oracle.com/cd/E80920_01/SAGUG/exadata-storage-server-cellcli.htm

質問 # 42
Examine this list of software components:
1. Oracle KVM Guest
2. Oracle Enterprise Manager Agent (OMA)
3. ASM instance
4. RDBMS instance
5. Automatic Diagnostic Repository Command Interpreter (ADRCI)
6. CELLCLI
7. Cell Server(CELLSRV)
8. diskmon
9. Restart Server (RS)
10. Management Server (MS)
What is the correct location where these software components can run in the standard Exadata Database Machine deployment?

A. 1, 2, 3, 4, 5, 8, 9 and 10 run on the database servers; 5, 6,7, 9 and 10 run on the Exadata storage servers.
B. 1, 2, 3, 4, 8 and 9 run on the database servers; 5, 6, 7, 9 and 10 run on the Exadata storage servers.
C. 1, 2, 3, 4, 9 and 10 run on the database servers; 5, 6, 7, 8, 9, and 10 run on the Exadata storage servers.
D. 3, 4, 8, and 10 run on the database servers; 1, 2, 5, 6, 7 and 9 run on the Exadata storage servers.
E. 2, 3, 4, 8, and 10 run on the database servers; 1, 5, 6, 7and 9 run on the Exadata storage servers.

正解：A

質問 # 43
Which two statements are true about Auto Service Request (ASR) with an Exadata Database Machine?

A. ASR Manager opens a service request (SR) automatically after sensors detect hardware faults.
B. ASR Manager must be installed and configured on one of the database servers.
C. ASR Manager must be installed and configured on a dedicated server external to the Database Machine.
D. ASR communicates with Oracle support services using HTTPS.
E. ASR can upload configuration metadata to support problem resolution.
F. Configuring ASR is mandatory for all Database Machine assets.

正解：A、C

質問 # 44
You have been tasked with replacing a memory module of an Exadata Storage Server and need to power off the affected storage server. Which two commands must you execute to safely power off the storage server in an Exadata X9M Database Machine?

A. CeLLCLI> list GRIDDISK where status != 'inactive' on the affected storage server
B. CellCLI LIST GRIDDISK ATTRIBUTES name WHERE asmdeactivationoutcome != 'Yes' on the affected Storage server
C. shutdown -h now' on the affected storage server
D. 'crsct1 stop cluster -all' on one of the database servers
E. CellCLI alter GRIDDISK all inactive on the affected storage server
F. CeLLCLI> alter cell shutdown SERVICES all on the affected storage server

正解：C

解説：
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmmn/maintaining-exadata-storage-servers.html#GUID-AE16A1DA-53C6-4E80-94E5-963AA65373AB

質問 # 45
You have been asked by Oracle Support to check the firmware of the hard & flash disks in a storage server. Which cellcli command should you use to get this information?

A. list cell attributes name, deviceName, diskType, physicalFirmware
B. list physicaldisk attributes name, deviceName, diskType, physicalFirmware
C. list celldisk attributes name, deviceName, diskType, physicalFirmware
D. list devices attributes name, deviceName, diskType, physicalFirmware

正解：B

解説：
This command will display the name, deviceName, diskType and physicalFirmware attributes of the physicaldisks in a storage server, as explained in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (page 85).

質問 # 46
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