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Top Latest 1Z0-902 Dumps Questions Offers Candidates Professional Actual Oracle Oracle Exadata Database Machine X8M Implementation Essentials Exam Products

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Oracle 1Z0-902 Certification Exam is designed for professionals who want to validate their skills in implementing and managing Oracle Exadata Database Machine X8M. 1Z0-902 exam measures your knowledge of Oracle Exadata features, architecture, and configuration, as well as data management, high availability, backup and recovery, and performance tuning.

Oracle 1z1-902 exam, also known as the Oracle Exadata Database Machine X8M Implementation Essentials exam, is a certification exam that validates the skills and knowledge of IT professionals in implementing and managing the Oracle Exadata Database Machine X8M. The Oracle Exadata Database Machine X8M is a high-performance database machine that provides significant improvements in performance, scalability, and reliability for enterprise workloads. Passing the Oracle 1z1-902 exam demonstrates your proficiency in implementing and managing this technology, which is highly valued in the IT industry.

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By passing the Oracle 1z1-902 exam, individuals can demonstrate their knowledge and expertise in implementing and managing Oracle Exadata Database Machine X8M systems. Oracle Exadata Database Machine X8M Implementation Essentials certification can help individuals enhance their career prospects and open up new opportunities in the field of database administration and management.

Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q70-Q75):

NEW QUESTION # 70
Which statement is true about the disks that are used in ASM diskgroups on the Exadata platform?

A. The grid disks in ASM diskgroups must have similar performance characteristics in addition lo having the same size.
B. Extreme Flash (EF) and High Capacity (HC) disks can be mixed to any capacity within the same diskgroup.
C. Sparse diskgroups are virtual objects allocated from the DATA diskgroup.
D. In an Exadata storage server, each disk is placed into a separate failure group.
E. If High redundancy is selected, grid disks from the primary and secondary Exadata Database Machine must be specified.

Answer: A

Explanation:
On Exadata systems, ASM disk group configurations require that:
Grid Disks Must Have Similar Performance Characteristics: Within a disk group, grid disks must not only be of the same size but also need to exhibit similar performance traits. This consistency ensures balanced I/O operations and optimizes the performance for ASM mirroring and striping across disks.
Sparse Diskgroups: These are specialized virtual objects that reside within the DATA disk group. Sparse diskgroups are used to support snapshots and other space-efficient storage solutions by creating virtual representations of grid disks within an existing disk group without consuming additional physical space.
These characteristics are fundamental to ensuring that ASM maintains optimal performance and storage efficiency on Exadata platforms.

NEW QUESTION # 71
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. 2,3,4,6,1,7,5
B. 3,2,6,1,4,7,5
C. 2,6,1,4,3,7,5
D. 3,2,6,4,1,7,5
E. 4,3,2,6,1,7,5

Answer: A

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

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

Answer: B,C,E

Explanation:
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.

NEW QUESTION # 73
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. Shutdown the Database Server if running.
B. Remove existing memory modules.
C. Memory cannot be expanded on Exadata X9M-2 Database Servers.
D. Add 16x 32GB DIMMs.
E. Add 12x 64GB DIMMs.
F. Add 16x 64GB DIMMs.
G. Add 24x 32GB DIMMs.
H. Add 32x 64GB DIMMs.
I. Add 12x 32GB DIMMs.

Answer: A,B,F

Explanation:
1. Remove existing memory modules: Before adding new memory modules, the existing memory modules should be removed.
2. Add 16x 64GB DIMMs: The new DIMMs should be added, in this case is 16 DIMMs of 64GB each, which will expand the memory to the highest configuration available.
3. Shutdown the Database Server if running: The Database Server should be shutdown before adding new memory modules in order to prevent any possible data loss or corruption.

NEW QUESTION # 74
Which two statements are true about the IPTables firewall configuration on a new Exadata Database Machine after initial deployment?

A. IPTables is configured and running with Oracle-supplied rules on the database servers.
B. IPTables is configured and running with Oracle-supplied rules on the storage servers.
C. IPTables is installed and available but not configured or running on the database servers.
D. IPTables is installed and available but not configured or running on the storage servers.
E. IPTables is installed and available but not configured on any server.

Answer: C,D

Explanation:
On Oracle Exadata Database Machine X9M, the default configuration of the IPTables firewall varies between storage servers and database servers:
Storage Servers: After initial deployment, IPTables is installed but remains in an unconfigured and inactive state. The Exadata storage servers focus on providing high availability and performance for database workloads and thus rely on internal security measures. The external firewall or network security policies typically handle firewall responsibilities, so IPTables is not actively configured on these servers by default.
Database Servers: Similar to storage servers, IPTables is also installed but neither configured nor running on the database servers. The Oracle Exadata Database Machine X9M emphasizes security through other means, such as its network isolation and dedicated interconnects. As part of Oracle's engineered systems design philosophy, the database servers are primarily focused on database performance, offloading much of the security management to other parts of the infrastructure and relying on data center-level firewalls for perimeter security.
To summarize, both database and storage servers have IPTables installed and available, but they are not configured or running by default on either server type. This setup allows Exadata environments to focus on optimized database performance while integrating with external network security solutions.

NEW QUESTION # 75
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