[Oct-2022] 1z1-902 Exam Dumps Pass with Updated 2022 Oracle Exadata Database Machine X8M Implementation Essentials
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NEW QUESTION 35
Which two statements are true about applying updates on Exadata systems?
- A. For regular Exadata updates, yum automatically installs a non-UEK kernel, which can be selected to boot from grub.
- B. To speed up applying storage server updates in a rolling manner, updating two storage servers simultaneously is recommended.
- 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. Failed storage server updates are automatically rolled back to a previous release.
- F. Updating kernel and RDMA packages on storage cells should be prevented by excluding them with the yum -exclude option.
Answer: A,C
NEW QUESTION 36
Which three of the following options are available for database consolidation on Exadata?
- A. Multiple Databases on a cluster
- B. Multiple Virtual Machine clusters supporting a single database for greatest resource isolation
- C. Bare Metal deployment with one database per database server
- D. Multiple pluggable databases in one or more container databases on a Virtual Machine or Bare Metal cluster
- E. Multiple databases spanning a Bare Metal and Virtual Machine cluster to provide resource isolation and consolidation concurrently
- F. A single database with one or more schema per application
Answer: A,B,D
NEW QUESTION 37
Which two statements are false about backup to ZFS Storage Appliance (ZFSSA)?
- A. ZFS Snapshots can provide rapid cloning of development and test environment.
- B. Top of Rack (ToR) switches are managed as part of the hardware stack and software levels are upgraded during the patching process.
- C. When backing up multi-rack systems, sharing Exadata X9M switches is recommended.
- D. ZFSSA may connect directly to the Exadata 100Gb RoCE network switches.
Answer: B,D
NEW QUESTION 38
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. Verify that the griddisks located on the physical disk have been successfully dropped from the associated ASM diskgroups.
- B. Create a new celldisk and new griddisks on the replaced physical disk.
- C. Replace the failed physical disk.
- D. Rebalance the data on the effected griddisks before performing a manual drop command.
- E. Identify the griddisks located on the failed physical disk and drop them from the associated ASM diskgroups.
- F. Add the griddisks back into the ASM diskgroup they used to be a member of.
Answer: C,D
NEW QUESTION 39
How is Exadata Secure RDMA Fabric isolation used in X9M-2 with virtualization enabled?
- A. 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.
- B. 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.
- C. 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.
- D. 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.
Answer: D
NEW QUESTION 40
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. Add 16x 64GB DIMMs.
- C. Add 12x 64GB DIMMs.
- D. Add 32x 64GB DIMMs.
- E. Remove existing memory modules.
- F. Add 12x 32GB DIMMs.
- G. Add 24x 32GB DIMMs.
- H. Add 16x 32GB DIMMs.
- I. Memory cannot be expanded on Exadata X9M-2 Database Servers.
Answer: B,E,H
NEW QUESTION 41
A new Exadata Quarter Rack with 2 Database Servers and 3 HC Storage Servers and 3-phase 15kVA 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 power cables from the servers to the PDUs can be rearranged inside the rack following OECA guidance to utilize a single PDU power cable.
- B. The installation cannot proceed until two power feeds are available per PDU.
- C. The installation can go ahead, no change is required.
- D. A splitter cable can be used to provide power to all PDU cables.
Answer: A
NEW QUESTION 42
Which two statements are true in regards to starting the Exadata Virtual Machine?
- A. Use vm_maker -auto-start command to configure a virtual machine to start automatically when the KVM host is started.
- B. Use vm_maker boot-from-iso command to boot a virtual machine.
- C. To see Oracle Linux boot messages during guest startup, use -console option with the vm_maker -start-domain command.
- D. To streamline the diagnosis of virtual machines, one ISO file is used for multiple Oracle Exadata System Software releases.
- E. Use vm_maker -start-domain to start a virtual machine manually.
Answer: A,B
NEW QUESTION 43
You are in the process of upgrading your nonvirtualized X9M-2 Database Machine elastic configuration with 4 database servers and 7 HC storage servers with an additional 4 database servers and 7 HC storage servers.
The new storage servers are called DM01CEL08 through dmoicel14.
After creating 96 new griddisks, you issued this SQL statement:
How many failgroups if any, will be added to the DATE diskgroup by executing this SQL statement?
- A. 96 consisting of one griddisk each
- B. 1 consisting of all 96 griddisks
- C. 0 because the new griddisks will be added to the existing faiigroups
- D. 12 consisting of seven griddisks each
- E. 7 consisting of 12 griddisks each
Answer: D
NEW QUESTION 44
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 sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA.
- D. OEDA allows customers to have both bare metal (BM) and virtual machine (VM) in an Exadata X9M Quarter Rack.
Answer: A,D
NEW QUESTION 45
What is the maximum DRAM capacity you can expand an X9M-2 DB Server?
- A. 1536GB
- B. 2048GB
- C. 384GB
- D. 1024GB
- E. 768GB
- F. 512GB
Answer: B
Explanation:
The Exadata X9M-2 Database Machine uses powerful database servers, each with two 32-core x86 processors and 512 GB of memory (expandable up to 2 TB).
NEW QUESTION 46
Which are three customer options for hosting the Platinum Services Advanced Support Gateway?
- A. Install in Oracle Virtual Machine with required hardware.
- B. Purchase the recommended x86 64-Bit gateway hardware from Oracle.
- C. Install on Exadata Engineered System.
- D. Provide individual x86 64-Bit gateway hardware.
- E. Install on Oracle Database Appliance.
Answer: A,B,E
NEW QUESTION 47
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. # lvextend -L +20G -verbose /dev/mapper/VGExaDb-LVDbOral
- B. # lvextend -L +20G -verbose /dev/VGExaDb/LVDbOral
- C. # xfs_growfs /uOl +20G
- D. # resize2fs +20G /dev/VGExaDb/LVDbOral
Answer: A
NEW QUESTION 48
What is the minimum Oracle Linux version required to support RoCE and Persistent Memory?
- A. Oracle Linux 6.9
- B. Oracle Linux 8.0
- C. Oracle Linux 7.5
- D. Oracle Linux 7.7
Answer: C
NEW QUESTION 49
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 power cables from the servers to the PDUs can be rearranged inside the rack following OECA guidance to utilize a single PDU power cable.
- B. The installation cannot proceed until two power feeds are available per PDU.
- C. The installation can go ahead, no change is required.
- D. A splitter cable can be used to provide power to all PDU cables.
Answer: A
NEW QUESTION 50
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 ATTRIBUTES name WHERE asmdeactivationoutcome != 'Yes' on the affected Storage server
- B. CeLLCLI> alter cell shutdown SERVICES all on the affected storage server
- C. shutdown -h now' on the affected storage server
- D. CellCLI alter GRIDDISK all inactive on the affected storage server
- E. CeLLCLI> list GRIDDISK where status != 'inactive' on the affected storage server
- F. 'crsct1 stop cluster -all' on one of the database servers
Answer: C
Explanation:
https://docs.oracle.com/en/engineered-systems/exadata-database-machine/dbmmn/maintaining-exadata-storage-servers.html#GUID-AE16A1DA-53C6-4E80-94E5-963AA65373AB
NEW QUESTION 51
How do ASM failure groups provide redundancy?
- A. Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.
- 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. Extended Redundancy mirrors data across data centers providing the highest levels of data protection.
Answer: C
NEW QUESTION 52
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. 3,2,6,4,1,7,5
- C. 2,6,1,4,3,7,5
- D. 3,2,6,1,4,7,5
- E. 4,3,2,6,1,7,5
Answer: A
NEW QUESTION 53
Which two sections of the AWR report shows statistics for X9M Persistent Memory Cache?
- A. PMEM Pool cache Read Hits in the Cache Sizes portion of the Report Summary
- B. PMEM Pool Misses in the Exadata Outlier Summary
- C. PMEM Cache section within Memory Statistics
- D. PMEM Cache section within Exadata Smart Statistics
- E. cell PMEM cache Read Hits in the Database IOs portion of the Performance Summary
Answer: C
NEW QUESTION 54
What are two recommended configuration best practices for backup and recovery on Exadata?
- A. Even if the backup was limited to writing to four tape drives, eight channels could be specified to expedite the restore process.
- B. When off-site long-term backup retention is needed, use Oracle Database Backup Cloud Service as a low-cost, offsite scalable storage for a disaster recovery solution.
- C. The internal Recovery Appliance backup and restore processing is optimized when the RMAN FILESPERSET parameter is set to 1 for the level 1 incremental backup set.
- D. Placing the backup network on dedicated switches installed in the top of the rack (ToR) has the benefits of isolating the backup network from other workloads and providing a greater level of control.
Answer: A,C
NEW QUESTION 55
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