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Oracle 1Z0-048 問題集

1Z0-048

試験コード:1Z0-048

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

最近更新時間:2025-03-05

問題と解答:全150問

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質問 1:
Your company asked you to implement RAC to enhance the scalability and availability of the database that you manage. Your coworker suggested that you use ASM as the only storage option. However, you implemented RAC with Automatic Storage Management (ASM) as well as OCFS as storage options. What are the reasons for implementing both OCFS and ASM as storage options? (Choose all that apply.)
A. You want to avoid keeping Oracle binaries on local storage.
B. You require OCFS to store archive log files because ASM does not support these files.
C. You want to use the Oracle Managed Files (OMF) feature but that is not supported by ASM.
D. You do not want to use raw devices to store voting and OCR files.
E. You do not want to store any file other than voting and OCR files in ASM.
正解:A,D

質問 2:
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.
正解:A,E

質問 3:
The maximum number of redo threads for a database from 10g R2 is
A. determined by the maxinstances setting
B. determined by the number of nodes in the cluster
C. not limited because the control file can extend for more thread records if required to
D. determined by the maxlogfiles setting
E. determined by the maxthreads setting
正解:A

質問 4:
According to the Maximum Availability Architecture, which case is best?
A. Run two identical sites with a primary RAC database on the first site, and only a RAC physical standby database on the second site.
B. Run two identical sites with a primary RAC database on the first site, and RAC physical and logical standby databases on the second site.
C. Run two identical sites with a primary RAC database on the first site, and non-RAC physical and logical standby databases on the second site.
D. Run two identical sites with a primary RAC database on the first site, and only a RAC logical standby database on the second site.
正解:B

質問 5:
You are migrating a single-instance Oracle database to RAC. The data files and Flash Recovery Area would be migrated to ASM using the RMAN commands BACKUP AS COPY DATABASE and BACKUP RECOVERY AREA, and stored in an ASM diskgroups called +DB_DG and +FR_DG. The DB_CREATE_FILE_DEST parameter would be set to +DB_DG and the DB_RECOVERY_FILE_DEST parameter would be set to +FR_DG.
What are the three best options for the location of your archivelogs so that they may be used properly for recovery without DBA intervention? (Choose three.)
A. ASM diskgroup +FR_DG as specified for the Flash Recovery Area provided that the ASM diskgroup is mounted on all ASM instances.
B. Local File System with each instance writing to a local location provided that the path names are identical on all nodes.
C. Cluster File System with each instance writing to a separate location as long as they are in directories under the same mount point.
D. Cluster File System with each instance writing to a shared location.
E. Local File System with each instance writing to a local location provided that NFS read mount points are created to all other nodes with instances of the database.
F. ASM diskgroup +DB_DG as specified for the Database Area provided that the ASM diskgroup is mounted on all ASM instances.
正解:A,D,E

質問 6:
In which directory should you put your callout scripts on your RAC nodes?
A. JORACLE_HOME/racg/usrco/
B. $ORA_CRS_HOME/opmn/conf/
C. $ORA_CRS_HOME/racg/usrco/
D. $ORACLE_HOME/opmn/conf/
正解:C

質問 7:
Which two statements regarding Oracle Clusterware are correct? (Choose two.)
A. The Oracle Database 10g CRS stack is compatible with Oracle 9i Group Services (GSD) processes.
B. The Oracle Database 10g version of the srvConfig.loc file is the ocr.loc file.
C. The installation of Oracle Clusterware is not necessary if you have already installed vendor-specific clusterware.
D. The Oracle9i srvConfig.loc file still exists for backward compatibility in Oracle Database 10g.
正解:B,D

質問 8:
Which background process communicates load information to its listener?
A. SMON
B. MMON
C. PMON
D. LMON
正解:C

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

1. View the Exhibit.

A Symmetric RAC and Physical Standby Database configuration is set up for a high availability requirement matching the one in the exhibit with the primary using 'maximum availability' protection mode.
Which two benefits are there for each primary instance in sending its redo to a corresponding standby instance, rather than having all the primary instances sending redo to the same standby apply instance? (Choose two.)

A) Multiple standby instances allow the redo to be applied more quickly by the standby apply instance after the redo has already arrived from the primary.
B) The services on the primary would be symmetric allowing performance on each instance to be equal in the event of a switchover or failover to the standby database.
C) The workloads of the archive processes on the standby instances would be balanced, thereby allowing load balancing across the cluster where the standby resides.
D) Multiple standby instances allow the redo to be written to standby redo logs more quickly than just using a single receiving instance by reducing commit time on the primary instances.
E) If the redo receive load is spread across multiple receiving instances then the primary redo transport is less likely to become a bottleneck.


2. To install Oracle Database 10g RAC on a UNIX platform, which four directories will you identify for use? (Choose four.)

A) Oracle inventory directory
B) Oracle home directory (ORACLE_HOME)
C) group services directory (GSDJHOME)
D) CRS home directory (ORA_CRS_HOME)
E) Oracle base directory (ORACLE_BASE)
F) NET_ADMIN directory


3. 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.


4. Which three statements about quiescing a RAC database are true? (Choose three.)

A) Use the ALTER SYSTEM QUIESCE RESTRICTED statement from a single instance.
B) The ALTER SYSTEM QUIESCE RESTRICTED and ALTER SYSTEM UNQUIESCE statements affect all instances in a RAC environment.
C) It is possible to take a cold backup while the database is in a quiesced state.
D) The database cannot be opened from another instance until the ALTER SYSTEM QUIESCE?statement finishes execution.


5. Which two statements about the correct configuration of the flash recovery area in a RAC environment are true? (Choose two.)

A) Set the DB_RECOVERY_FILE_DEST_SIZE initialization parameter to the same value on all instances.
B) The use of a common flash recovery area is not recommended on clusters containing more than four nodes.
C) Set the flash recovery area size to no smaller than 20 GB.
D) Set the DB_RECOVERY_FILE_DEST initialization parameter to the same value on all instances.


質問と回答:

質問 # 1
正解: D、E
質問 # 2
正解: A、B、D、E
質問 # 3
正解: A、E
質問 # 4
正解: A、B、D
質問 # 5
正解: A、D

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