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2021 Jul 1Z0-027 free practice exam
Q21. You plan to migrate an Oracle database that supports an online transaction processing (OLTP) workload to your Database Machine.
Following are details for the source database: Database version: 10.2.0
Byte order: Big Endian HP-UX (64-bit)
Database size: 24 TB
Storage: ASM with 1 MB allocation unit size
Which two are supported migration methods?
A. Physical migration using ASM online Migration
B. Physical migration using Transportable Database
C. Logical migration using Oracle Streams
D. Local migration using Oracle Streams
E. Logical migration using logical standby
Answer: BC
Q22. Which three are true abort Enterprise Manager plug- in configuration for the Database Machine?
A. There are several separate plug-ins for Grid Control.
B. There is one plug-in for Cloud Control.
C. There are several separate plug-ins for Cloud Control.
D. Some plug-ins require SNMP trap forwarders.
E. All plug-ins require SNMP trap forwarders.
F. There is one plug-in for Grid Control.
Answer: ABD
Q23. You have two very large databases supporting OLTP workloads which run on multiple small-blade style servers in a cluster and which require optimal latency for I/O.
You plan to migrate them to a Database Machine once a capacity planning exercise is finished.
The database backup strategy requires that backups are written directly to media.
High availability requirements state that you must be able to survive node failures at any time.
Which three Database Machine components or features would you recommend to support these requirements?
A. Use of write back flash cache
B. Use of smart flash logs
C. High capacity disks in the Database Machine
D. High performance disks in the Database Machine
E. A high capacity expansion full rack
F. A high performance expansion full rack
Answer: BDE
Q24. Identity the resource bottleneck for which QoS Management can generate recommendation?
A. CPU resource bottlenecks
B. Global Cache resource bottlenecks
C. I/O resource bottlenecks
D. Network resource bottlenecks
Answer: B
Q25. Which two are true concerning the allocation of I/O resources by the IORM within the CELLSRV process?
A. Control File I/O is managed automatically at high priority by IORM.
B. Control File I/O is considered part of the SYSTEM resource Consume group by IORM.
C. Log Writer I/O to the Smart Flash Log is considered part of the SYSTEM resource consumer group by IORM.
D. Log Writer I/O to the Smart Flash Log is managed automatically at high priority by IORM.
E. Database Writer I/O is managed automatically at normal priority by IORM.
F. Database Writer I/O is considered part of the SYSTEM resource consumer group by IORM.
Answer: AE
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Q26. You configuring has two half racks, one with high capacity disks and other with high performance disks and high capacity expansion half rack.
There are two RAC clusters, one on each half rack, which have separate storage grids, each consisting of some of the storage servers in the configuration.
You are planning your deployment of Enterprise Manager to monitor all the components of this multi-rack Database Machine, and must provide for high availability of the monitoring infrastructure.
If the host running the agent which has database machine targets bound to it fails, the monitoring of these targets must be another agent.
Which two are true regarding the configuration used to support this?
A. Enterprise manager support must be deployed to only one Enterprise Manager Agent in each cluster.
B. A secondary agent must be deployed on a database server in the same cluster as the server hosting the primary agent.
C. Enterprise Manager support must be deployed to all Enterprise Manager Agents in each cluster.
D. A secondary agent may be deployed on a database server in a different cluster than the server hosting the primary agent.
E. A secondary agent must be deployed on a database server in a different cluster than the server hosting the primary agent.
F. Enterprise Manager support must be deployed to at leasttwoEnterprise Manager Agents in each of the two RAC clusters.
Answer: AD
Q27. You are in the planning stage of the network configuration for your Database Machine. The requirements are:
1. A fault-tolerant network, providing higher availability for connections to database instances
2. Fault tolerance providing higher availability for connections to perform management functions on the database and storage servers.
3. Full monitoring of all Database Machine components using Enterprise Manager
Which three components require external Ethernet network cables to connect your existing network infrastructure to your database machine to satisfy this requirement?
A. Database servers
B. Exadata storage servers
C. InfiniBand storage servers.
D. Power distribution units (PDUs)
E. Cisco Ethernet switch
Answer: ABC
Q28. You are examining the existing IORM configuration on the cells of Database Machine, to see if they require my modifications based on recent changes to various workloads.
All seven cells in your X3-2 half-rack shown the following:
Which two are true about I/O to the cells using this plan?
A. I/O requests in the batch category may use flashcache if the I/O is from the sales finance database, and these I/O requests are guaranteed to get 80% of the I/O if the interactive category I/Os use no more than 20%.
B. I/O requests made by sessions in the marketing database may use flashing and flashcache if no other categories or database or database are using flashing and flashcache at the same time.
C. I/O requested in the interactive category may use flashdns if the I/O is from the sales or finance databases, and these I/O requests are guaranteed to get 90% of the I/O if the enough I/Os are issued in this category.
D. I/O requests from the sales database may use flashing regardless of the I/O category.
E. No I/Os in any category or from any database may use flashing or flashcache because the objective is off.
Answer: DE
Q29. Identify the correct sequence of commands to completely power off a Database Machine in an Orderly fashion:
1. Execute “crsctl stop cluster –all” as the grid user from one database server.
2. Execute “crsctl stop cluster –all” as the root user from one database server.
3. Power off all network switches using their power switch.
4. Execute “crsctl stop cluster –all” as the root user from one database server.
5. Execute “crsctl stop cluster –all” as the grid user from one database server.
6. Power off the rack using the power switches on the PDUs.
7. Execute “shutdown –h now” on all database servers.
8. Execute “shutdown –h now” on all Exadata storage servers.
9. Execute “shutdown –h now” on all servers.
A. 1, 9, 3 and 6
B. 2, 9 and 6
C. 4, 7, 8, 3 and 6
D. 5, 8, 7, 3 and 6
E. 2, 8, 7, 3 and 6
F. 1, 8, 7, 3 and 6
G. 2, 7, 8 and 6
H. 2, 8, 7 and 6
Answer: E
Q30. Last weekend, an Exadata storage server flashdisk entered the predictive failure state.
The flashdisk is used by the flashcache and has a griddisk which is a member of a normal redundancy diskgroup.
Identify the four steps you must perform to replace this flashdisk.
A. Identify the griddisk on the predictive failure flashdisk and drop it from the associated ASM diskgroup
B. Verify that the griddisk located on the predictive failure flashdisk has been successfully dropped from the associated ASM diskgroup.
C. Drop the flashcache on the cell and re-create it using all but the predictive failure flashdisk.
D. Safely power off the cell containing the predictive failure flashdlsk.
E. Replace the predictive failure flashdisk.
F. Power up the cell containing the replaced flashdlsk and activate all grlddlsks.
G. Drop the flashcache on the cell and re-create it using all flashdlsks.
H. Create a new griddisk on the replaced flashdisk.
I. Add the griddisk back into the ASM diskgroup to which it belonged.
Answer: ADEI