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Quick and Easiest Way of Getting 1Z0-902 Oracle Exadata Database Machine X8M Implementation Essentials Certification Exam
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To pass the Oracle 1z1-902 exam, candidates must demonstrate their knowledge and skills in various areas, including Exadata Database Machine architecture, hardware components, software components, configuration, performance tuning, and troubleshooting. They should also be familiar with Oracle Database Administration, Oracle Clusterware, and Oracle Automatic Storage Management (ASM).
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The 1z1-902 exam is a requirement for professionals who want to become Oracle Certified Implementation Specialist - Exadata Database Machine X8M. Oracle Exadata Database Machine X8M Implementation Essentials certification demonstrates that an individual has the skills and knowledge required to implement and manage Exadata Database Machine X8M. Oracle Exadata Database Machine X8M Implementation Essentials certification is recognized globally and can help individuals to advance their careers.
Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q44-Q49):
NEW QUESTION # 44
Which two statements are false about backup to ZFS Storage Appliance (ZFSSA)?
- A. When backing up multi-rack systems, sharing Exadata X9M switches is recommended.
- B. Top of Rack (ToR) switches are managed as part of the hardware stack and software levels are upgraded during the patching process.
- C. ZFS Snapshots can provide rapid cloning of development and test environment.
- D. ZFSSA may connect directly to the Exadata 100Gb RoCE network switches.
Answer: A,D
Explanation:
1. ZFS Storage Appliance (ZFSSA) can't connect directly to the Exadata 100Gb RoCE network switches. ZFSSA uses Fibre Channel protocol to connect to the Exadata storage cells. C. When backing up multi-rack systems, sharing Exadata X9M switches is not recommended. Each rack should have its own switches to minimize the risk of data loss due to switch failure.
NEW QUESTION # 45
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 will apply patches in component groups consisting of 1 database server and 2 storage servers to minimize disruption.
- B. patchmgr must be invoked with the -rolling argument with all database and storage servers listed in a single input file.
- C. patchmgr cannot apply updates in a rolling manner, you must manually apply patches with the dbnodeudpate and cellupdate tools if high availability is required.
- D. patchmgr must be invoked with the -rolling argument. Each component type must be upgraded independently of the other.
Answer: B
NEW QUESTION # 46
Assume that the RDBMS and ASM instances are up and you are enabling write-back flash cache in one cell server at a time.
Which step(s) should you perform before executing the following command you your Exadata X9M-8 Database Machine, which will set the cell flash cache mode to write-back?
#cellcli -e alter cell flashCacheMode=WriteBack
- A. Inactivate all the physical disks on the cell.
- B. Shut down the CELL5RV service on the cell.
- C. Create a new flash cache on the cell.
- D. Drop the existing flash cache on the cell.
- E. Disable the storage indexes on the cell.
- F. Inactivate the grid disks on the cell.
Answer: C,D
Explanation:
To enable the write-back flash cache on an Exadata X9M-8 storage cell, the existing flash cache must be removed before transitioning to a new mode. This is because the flash cache configuration-whether set to write-through or write-back-requires a re-initialization of the flash storage to apply the new caching behavior. The steps are as follows:
Drop the Existing Flash Cache: Before altering the cache mode, any existing flash cache on the cell must be dropped. This clears the existing configuration and allows the system to reallocate flash resources under the new mode. The command for this is:
# cellcli -e "drop flashcache"
Create a New Flash Cache in Write-Back Mode: After dropping the existing flash cache, you can create a new flash cache with write-back mode enabled. This step ensures that the flash cache is configured correctly to handle write operations before they reach disk, thus accelerating write-heavy workloads. The relevant command to set write-back mode is:
# cellcli -e "create flashcache all"
This process will reset the flash cache with the write-back mode enabled, thereby caching both read and write operations effectively.
NEW QUESTION # 47
What is the minimum Oracle Linux version required to support RoCE and Persistent Memory?
- A. Oracle Linux 7.7
- B. Oracle Linux 7.9
- C. Oracle Linux 7.5
- D. Oracle Linux 8.0
Answer: B
Explanation:
RoCE (RDMA over Converged Ethernet) and Persistent Memory are features that are supported by Oracle Linux. The minimum version of Oracle Linux required to support RoCE and Persistent Memory is Oracle Linux 7.9.
RoCE is a low-latency, high-bandwidth networking technology that enables fast data transfer between servers using converged Ethernet networks. It is supported by Oracle Linux 7.9 and later versions, which includes the necessary kernel modules and user-space libraries to enable RoCE.
Persistent Memory is a technology that allows data to be stored in non-volatile memory (NVM) devices, such as NVDIMMs (Non-Volatile Dual In-line Memory Modules), which can be accessed at near-DRAM speeds. Oracle Linux 7.9 and later versions include support for Persistent Memory, which includes kernel modules and user-space libraries to enable Persistent Memory.
NEW QUESTION # 48
Which two steps concise the path used to communicate with Enterprise Manager from an Exadata Database Machine?
- A. SNMP traps for alerts are sent by the storage server MS process to the storage server ILOM.
- B. SNMP traps for alerts are sent by the storage server MS process to the Enterprise Manager agent.
- C. SNM? traps for alerts are sent by the storage server ILOM to the Enterprise Manager agent.
- D. SNMP traps for alerts are sent by the storage server ILOM to the storage server is process.
- E. SNMP traps for alerts are sent by the storage server ILOM to the storage server MS process.
- F. SNMP traps for alerts are sent by the storage server RS process to the storage server ILOM.
- G. SNMP traps for alerts are sent by the storage server RS process to the Enterprise Manager agent.
Answer: B,C
Explanation:
In an Exadata environment, the path of communication for SNMP traps involves:
Management Server (MS) Process to EM Agent: Alerts related to the storage server are generated by the MS process, which then forwards SNMP traps directly to the Enterprise Manager agent, allowing centralized monitoring and alert management.
ILOM to EM Agent: The ILOM on each Exadata storage server can independently send SNMP traps to the EM agent, providing additional hardware-level monitoring and alerting capabilities .
These pathways ensure that alerts from both hardware and software layers reach Enterprise Manager efficiently, supporting proactive management and rapid response to system issues.
NEW QUESTION # 49
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