Oracle 1Z0-902認證考試 & 1Z0-902學習筆記

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Oracle的1Z0-902考試涵蓋了與Exadata Database Machine X8M相關的各種主題，包括硬件和軟件安裝、配置和管理。候選人還將被測試對Exadata存儲、網絡和安全方面的知識。考試還涵蓋了與Exadata備份和恢復、補丁和升級以及監控和疑難排解相關的主題。

Oracle Exadata數據庫機X8M是一個高性能係統，旨在提供關鍵任務工作負載的極端性能，可擴展性和可用性。這是一個完全集成的系統，它結合了硬件和軟件組件，以提供完整的數據庫解決方案。 Oracle 1Z0-902認證考試涵蓋了與Oracle Exadata數據庫機器X8M的實現和管理有關的廣泛主題，包括硬件和軟件體系結構，配置和管理，數據庫部署，監視和故障排除以及備份和備份和恢復。

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1Z0-902認證考試的學習資料

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Oracle Exadata Database Machine 是一種工程系統，為 Oracle 數據庫提供極高的性能、可擴展性和可用性。Exadata Database Machine 結合了硬件和軟件組件，這些組件被設計和優化為協同工作。Oracle Exadata Database Machine X8M 是 Exadata Database Machine 的最新版本，提供了增強的性能、安全和可管理性功能。通過 Oracle 1Z0-902 考試是展示您實施和管理 Oracle Exadata Database Machine X8M 專業知識的絕佳方式。

最新的 Oracle Engineered Systems 1Z0-902 免費考試真題 (Q70-Q75):

問題 #70
You are adding a disk expansion kit to a running Exadata X8M Database Machine's Database Servers, and have a filesystem layout that includes:

After running the following commands, which command needs to be run to add 20G of space to the filesystem mounted on /u01?

A. # resize2fs +20G /dev/VGExaDb/LVDbOral
B. # xfs_growfs /uOl +20G
C. # lvextend -L +20G -verbose /dev/mapper/VGExaDb-LVDbOral
D. # lvextend -L +20G -verbose /dev/VGExaDb/LVDbOral

答案：C

問題 #71
Which are two correct statements about backing up Exadata Database Machine?

A. Use a snapshot-based backup of an Oracle Exadata Database Machine database server software.
B. Backing up Exadata Storage Server Software is critical for restoration.
C. Backup of the Oracle Cluster Registry, which also contains Voting Disk information, is automatically maintained on the file system of the first database server.
D. For high availability, system area can be on the first two disks and M.2 devices.
E. The M.2 disk is hot pluggable and can be replaced when the power is on, but you will have to restore the system data manually.

答案：B,C

解題說明：
[1] Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1][2], Chapter 4: Oracle Clusterware [2] Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1][2], Chapter 8: Oracle Exadata Storage Server Software [3] Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book [1][2], Chapter 9: Oracle Exadata Storage Server Infrastructure

問題 #72
Which three statements are true about the CELLCLI command?

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

答案：A,B,D

解題說明：
The CELLCLI utility is a command line interface to Exadata that enables the execution of commands across multiple storage servers in parallel. It also has command-line history, so users can easily recall previously entered commands. Furthermore, the CELLCLI utility can be executed using the DCLI utility, which provides a convenient way to execute commands on multiple storage servers simultaneously.
However, CELLCLI does not require root privileges to create CELLDISKS and GRIDDISKS, and it cannot be executed on storage servers. This is because CELLCLI is used to manage the Exadata database machine from the database server [1]. For more information about CELLCLI, refer to the Oracle Exadata Database Machine X9M Implementation Essentials official text book and resources [1][2].

問題 #73
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. There is no limit on the number of VMs in an Exadata rack as long as the Exadata rack has adequate resources.
C. OEDA allows customers to have both bare metal (BM) and virtual machine (VM) in an Exadata X9M Quarter Rack.
D. OEDA sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA.

答案：C,D

解題說明：
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.

問題 #74
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. Configuring ASR is mandatory for all Database Machine assets.
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. ASR Manager must be installed and configured on one of the database servers.

答案：A,E

解題說明：
D) ASR can upload configuration metadata to support problem resolution1.
E) ASR Manager opens a service request (SR) automatically after sensors detect hardware faults1
https://docs.oracle.com/cd/E37710_01/doc.41/e23333/toc.htm

問題 #75
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