1Z0-048の無料問題集（150題）、1Z0-048認定試験参考書

Oracle 1Z0-048 問題集

試験コード：1Z0-048

試験名称：Oracle Database 10g R2: Administering RAC

最近更新時間：2024-04-27

問題と解答：全150問

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質問 1：
After migrating from a 10g R1 cluster to 10g R2, you decide to multiplex your voting disk. Which are the two ways in which you can accomplish this task? (Choose two.)
A. You must add additional voting disks offline.
B. You can add additional voting disks online.
C. You may use the VIPCA utility to add new voting disks.
D. You may use the command:
crsctl add ess votedisk <new voting disk path>
E. You should not use symbolic links.
正解：B,D

質問 2：
Your storage administrator informs you about some disk corruption issues in the disk subsystem where your Oracle Cluster Registry (OCR) backups are located. Your storage administrator has resolved these corruption issues by applying a patch to the storage subsystem, but to be sure that the OCR backups are not affected by this problem the administrator wants you to check the integrity of the OCR backups. How would you do this?
A. There is no easy way to check your OCR backups for corruptions.
B. You dump the OCR backup contents into a text file by using the OCRDUMP command, and if that succeeds without errors you know that your OCR backups are not corrupted.
C. You create another physical backup of the OCR backups by using the OCRCONFIG command, and if this succeeds without errors you know that the OCR backups are not corrupted.
D. You create a logical export from the OCR backups by using the OCRCONFIG command and analyze the export file for errors.
E. You can check whether the OCR backups are not corrupted by using the OCRCHECK command.
正解：B

質問 3：
You are creating a database in your RAC implementation. You are using the DBCA to create the database, and you selected the Raw Devices Mapping file on one of the screens of the DBCA. What is the reason for selecting this file?
A. You want to provide the DBCA with a list of all the storage devices that are currently bound to a raw interface.
B. You want the DBCA to bind the partitions to raw devices.
C. You want to set the appropriate raw partition for each database file.
D. You want to configure an ASM diskgroup containing raw devices.
正解：C

質問 4：
You decide to implement a Data Guard configuration to support a disaster recovery plan for your RAC database. Your primary database has all shared files and the flash recovery area is stored on ASM disk groups. Which three options exist for storing the data guard broker configuration files at the primary location? (Choose three.)
A. must be stored on Oracle Cluster File System if a cluster file system is used
B. must be in the same shared ASM disk group as the database data files if the broker configuration files are stored in ASM disk groups
C. may be stored on any supported cluster file system if a cluster file system is used
D. can be stored on shared Raw Devices
E. must be in the same shared ASM disk group as the Flash Recovery Area if the broker configuration files are stored in ASM disk groups.
F. can be in any shared ASM disk group
正解：C,D,F

質問 5：
You define the ERP service using this statement:
srvctl add service -d RACDB -s ERP -r RAC01 -a RAC02 -P PRECONNECT srvctl start service -d
RACDB -s ERP
You then use this connect string to connect to your RAC instances:
ERP =
(DESCRIPTION =(FAILOVER=ON)(LOAD_BALANCE=ON)
(ADDRESS=(PROTOCOL=TCP)(HOST=N1 VIP)(PORT=1521))
(ADDRESS=(PROTOCOL=TCP)(HOST=N2VIP)(PORT=1521))
(CONNECT_DATA = (SERVICE_NAME = ERP)
(FAILOVER_MODE =
(BACKUP=ERP_PRECONNECT)(TYPE=SESSION)(METHOD=PRECONNECT))))
You successfully establish a connection to your RAC database using the above connect string.
How many connections are established, and on which instances?
A. one on RAC01 and one on RAC02
B. two on RAC02
C. only one on RAC01
D. two on RAC01
正解：A

質問 6：
After a power failure, you noticed that one of your cluster database instances did not start automatically, whereas all other instances came up successfully. What would you do to determine the precise cause for the instance startup failure? (Choose three.)
A. Enable extra debugging in the Oracle Clusterware software by using the CRSCTL command.
B. Check if the Oracle Clusterware is functional by using the CRSCTL command.
C. Reboot the node where the failing instance resides to check if the problem is persistent.
D. Check for OCR corruptions by using the OCRCHECK command.
E. Check the alert.log file that belongs to the Oracle Clusterware software.
F. Check the alert.log file that belongs to the instance that did not start.
G. Check the resource state by using the CRS_STAT command.
正解：E,F,G

質問 7：
Which two statements are true regarding high availability in a RAC environment? (Choose two.)
A. Each primary RAC instance must send its redo stream to the same standby RAC instance.
B. It is the Data Guard Broker's responsibility to communicate with CRS during a switchover operation to stop and start services according to each Data Guard site role.
C. When you have a serious crash of your primary site, Data Guard Broker automatically initiates the failover to the standby site.
D. When you have a serious crash of your primary site, it is your responsibility to initiate the failover to the standby site in case you are not using the Fast-Start Failover feature.
E. You can have multiple RAC instances apply standby redo log files to the standby database.
正解：B,D

質問 8：
You and your colleague are working with Oracle Support on a database instance stability issue. The Oracle Support engineer wants you to issue a crsctl debug log crs ?crsctl debug log crs command to assist you in your troubleshooting assignment. Why does the Oracle Support engineer want you to do this?
A. to list what debugging options are available on the CRS daemon
B. to enable extra debugging on the CRS daemon the next time the CRS daemon is started
C. to enable extra debugging on the currently running CRS daemon
D. to enable extra debugging on the currently running and CRS daemons as well as those that will run in the future
E. to list which debugging options are enabled on the CRS daemon
正解：D

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Oracle Database 10g R2: Administering RAC 認定 1Z0-048 試験問題:

1. You decide to implement a Dataguard configuration for your RAC installation to support your disaster recovery architecture. There are two instances on the primary and two on the physical standby. Which are the two appropriate settings for the DG_BROKER_CONFIG_FILE1 and DG_BROKER_CONFIG_FILE2 initialization parameters? (Choose two.)

A) DG_BROKER_CONFIG_FILE1 set to a location shared between each standby database instance and DG_BROKER_CONFIG_FILE2 set to a different location shared between each standby database instance on the standby database cluster.
B) DG_BROKER_CONFIG_FILE1 set to a nonshared location for each primary database instance and DG_BROKER_CONFIG_FILE2 set to a shared location for each primary database instance on the primary database cluster.
C) DG_BROKER_CONFIG_FILE1 set to a nonshared location for each secondary database instance and DG_BROKER_CONFIG_FILE2 set to a shared location for each secondary database instance on the secondary database cluster.
D) DG_BROKER_CONFIG_FILE2 set to the same shared location for the second instance of both the primary and the standby databases.
E) DG_BROKER_CONFIG_FILE1 set to a location shared between each primary database instance and DG_BROKER_CONFIG_FILE2 set to a different location shared between each primary database instance on the primary database cluster.
F) DG_BROKER_CONFIG_FILE1 set to the same shared location shared between the first instance of both the primary and the standby databases.

2. What does server-side Connect-Time Load Balancing do to complement the client-side Connect-Time Load Balancing function of balancing the connection requests to all the listeners in the address list on the client side?

A) it balances the load for each service across all preferred instances for that service, according to the global load-balancing requirements.
B) it balances the load for each service across all instances for that service, according to the service-specific load-balancing requirements,
C) it balances the load for each service across all preferred instances for that service, according to the service-specific load-balancing requirements,
D) it balances the load for each service across all available instances for that service, according to service-specific load-balancing requirements,
E) it balances the load for each service across all preferred instances for all services, according to the service-specific load-balancing requirements,

3. Which three statements about Snapshot Control File Management in a RAC environment are true? (Choose three.)

A) You can use a cluster file system or a raw device to store snapshot control files.
B) You need to configure a default path and file name for these snapshot control files that is valid on every node from which you might initiate an RMAN backup.
C) RMAN parameters controlling snapshot control files can be configured from the Enterprise Manager Cluster Database home page.
D) By default, the snapshot control file is created on the node that is making the backup.

4. Which optional parameter of the DESCRIPTION clause of a TNS entry can you use to make sure that another protocol address is tried if the first one fails?

A) SOURCE_ROUTE
B) TYPE OF SERVICE
C) FAILOVER
D) LOAD_BALANCE

5. You have attended a user group presentation on RAC and based on what you have learned you feel that your company would benefit from having the RAC option to meet its Oracle database requirements in several ways. Your manager does not know much about RAC and asks you to create a presentation to the team explaining RAC, and whether it should be implemented in your installation. Which three statements explain the benefits and implications of RAC? (Choose three.)

A) RAC alone would increase availability when doing release upgrades.
B) RAC would increase availability in the event of a network failure.
C) RAC used in conjunction with parallel execution may provide speedup of DSS queries.
D) RAC would increase availability in the event of data failures.
E) RAC alone would not help protect from human errors.
F) RAC would increase scalability for all application workloads in all cases.
G) RAC would increase availability in the event of node and instance failures.
H) RAC used in conjunction with parallel execution may provide for speedup of OLTP workload processes.