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1Z0-902 Reliable Mock Test | 1Z0-902 Exam Sims

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Oracle Exadata Database Machine X8M is a high-performance, scalable database system designed to meet the demands of modern businesses. It combines hardware and software designed specifically for Oracle Database workloads, and is optimized for use with Oracle Cloud Infrastructure. With the Oracle 1z1-902 certification, professionals can demonstrate their ability to implement and manage this powerful database system, and gain recognition for their expertise in this area.

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q35-Q40):

NEW QUESTION # 35
You are working on a remote Exadata Database Machine with current software and firmware. You now need to start a storage server after hardware maintenance.
Which ILOM command starts the storage server?

A. -> set /SYS power_state=ON
B. -> start /SP/console
C. -> start /SYSTEM/power
D. -> start /System
E. You must be physically present in the data center to start an Exadata Storage Server.
F. -> start /SYS/power

Answer: F

Explanation:
ILOM (Integrated Lights Out Manager) is a remote management system that allows you to control and monitor Exadata Database Machine components, such as storage servers and database servers, from a remote location. The command "start /SYS/power" is used to power on the storage server in the Exadata Database Machine after hardware maintenance. This command can be executed remotely via ILOM.

NEW QUESTION # 36
What is the maximum DRAM capacity you can expand an X9M-2 DB Server?

A. 1024GB
B. 512GB
C. 2048GB
D. 384GB
E. 1536GB
F. 768GB

Answer: E

Explanation:
According to 1, Exadata X9M-2 Database Servers are based on Intel Xeon Platinum 8368Y processors with 32 cores and 768 GB of DRAM memory per server. This memory can be expanded up to 1.5 TB per server by adding 24 x 32 GB DIMMs. The DRAM memory is used for buffer cache, PGA, and other database purposes1. Exadata X9M-2 Database Servers also have 25.6 TB of Persistent Memory Acceleration (PMEM) per server, which is used for log writes and columnar data caching1. PMEM is a new type of memory that combines the speed of DRAM with the persistence of flash2. Exadata X9M-2 Database Servers are designed to run Oracle Database workloads with high performance, scalability, and reliability2

NEW QUESTION # 37
An Exadata storage server physical disk on an X9M-2 high-capacity full rack entered the predictive failure state. Which two steps must you perform to replace this failed physical disk?

A. Add the griddisks back into the ASM diskgroup they used to be a member of.
B. Create a new celldisk and new griddisks on the replaced physical disk.
C. Identify the griddisks located on the failed physical disk and drop them from the associated ASM diskgroups.
D. Replace the failed physical disk.
E. Rebalance the data on the effected griddisks before performing a manual drop command.
F. Verify that the griddisks located on the physical disk have been successfully dropped from the associated ASM diskgroups.

Answer: C,D

Explanation:
Once the physical disk has been replaced, you will need to create a new celldisk and griddisks on the replaced physical disk. After the griddisks have been dropped from the associated ASM diskgroups, you can then add the griddisks back into the ASM diskgroup they used to be a member of and rebalance the data on the effected griddisks. Finally, you should verify that the griddisks located on the physical disk have been successfully dropped from the associated ASM diskgroups.

NEW QUESTION # 38
You are hardening the security posture of your Exadata Database Machine. Before disabling ssh access to the storage servers, what should you do to enable REST access to the MS process?

A. The MS Process on the storage servers is natively endowed with REST services and are enabled by default, however, appropriate roles and users should be created to ensure security.
B. The MS Process on the storage servers is natively endowed with REST services, but are not enabled by default.
C. Install Oracle Rest Data Services on each Storage server and install the MS APEX application.
D. Install Oracle Rest Data Services on each Database server and install the MS APEX application.

Answer: B

Explanation:
To enable REST access to the MS process, you need to manually enable the REST services on each storage server by running the command cellcli -e "ALTER CELL ENABLE REST" and then configure authentication and authorization to ensure secure access. This is described in detail in the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book (Chapter 8, Securing the Exadata Database Machine).

NEW QUESTION # 39
Which two Exadata security features would you configure to control which databases can access which griddisks, when multiple databases share space on your storage servers in an unpartitioned storage grid?

A. Using EXADCLI instead of CELLCLI to create the griddisks
B. File permissions on the griddisks in each database server
C. File permissions on the griddisks in each storage server
D. Exadata storage realms using database-scoped security mode
E. Exadata storage realms using ASM-scoped security mode

Answer: D,E

Explanation:
Exadata storage realms using ASM-scoped security mode allows you to control which database can access which griddisks by creating realms at the ASM level, thereby allowing you to limit the access of each database to the griddisks that it needs to access. This is covered in section 3.15.2 of the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and Resources [1].
Exadata storage realms using database-scoped security mode allows you to control which database can access which griddisks by creating realms at the database level [1], thereby allowing you to limit the access of each database to the griddisks that it needs to access. This is covered in section 3.15.3 of the Oracle Exadata Database Machine X9M Implementation Essentials Official Text Book and Resources [2].
[1] https://docs.oracle.com/en/engineered-systems/exadata-database-machine/x9m/exad-implementing-database-machine-x9m.pdf [2] https://docs.oracle.com/en/engineered-systems/exadata-database-machine/x9m/exad-implementing-database-machine-x9m.pdf

NEW QUESTION # 40
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