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：2024-04-18

問題と解答：全150問

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質問 1：
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
正解：A,B,D,E

質問 2：
You need to add a new service to your RAC database, called DBA, to account for all the work done by database administrator sessions performing routine maintenance, to make this visible in the v$service_stats view. The maintenance would be done at quieter times but restricted session is not an option due to round-the-clock access requirements. The database administration team may connect locally or remotely to the RAC database. You decide to use DBCAto create the new service. What must be true to allow client-server connection to the DBA service? (Choose two.)
A. All the listeners must be reloaded using LSNRCTL RELOAD to recognize the dynamically created service.
B. The TNSNAMES.ORAfile or a name server must contain the net service entries for the DBA service.
C. The services must be started using the SRVCTL START SERVICE command.
D. The ALTER SYSTEM REGISTER command must be used to induce PMON to register the service with the listeners.
E. The service must be started using the DBMS_SERVICE.START_SERVICE procedure.
F. The service must have at least one preferred or available instance that is running and accepting logins.
正解：B,F

質問 3：
What does your client connection do using this connect string?
n et_s e rvi c e_n a m e=
(DESCRIPTION
(LOAD_BALANCE=on)
(ADDRESS=(PROTOCOL=tcp)(HOST=sales1 -svr-vip)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=sales2-svr-vip)(PORT=1521)))
(CONNECT_DATA=(SERVICE_NAME=sales. us. acme, com))
A. It connects you to the instance on the least loaded node that currently accepts logins for the SALES.US.ACME.COM service.
B. It randomizes its connection request on the available listeners.
C. It connects you to the least loaded node.
D. It connects you to the least loaded instance.
正解：B

質問 4：
Read the following statements about the ASM and OCFS file systems:
1) t is compatible with Oracle 9i and Oracle 10g.
2) t is one of the solutions for managing Oracle binaries in a RAC environment.
3) t relies on storage hardware or host-based RAID functionality to support high availability.
4) t is a shared storage file system designed to eliminate the need for raw partitions to store
certain files.
5) t is has integrated volume management with superior extent-based striping and mirroring.
6) t is a cluster file system with a volume manager built into the Oracle 10g kernel to manage
Oracle database files.
Identify the correct grouping where Group A represents true statements about ASM and Group B
represents true statements about OCFS.
A. Group
B. Group A: 5 6 Group B: 1 2,3,4
C. 1 5,6
D. 3 4 Group
E. 2 3,4 Group
F. 1 3,4 Group B: 3 4,5
G. Group
H. Group
I. 1 2,5,6
正解：B,C

質問 5：
Your company has certain standard practices for technology and you are configuring ASM disk groups for your four-node RAC cluster. The company guidelines suggest that there is one disk group for the flash recovery area that is shared by all databases and a separate disk group for the database area of all databases. Which three exceptions exist that may require you to create additional disk groups? (Choose three.)
A. The disk farm has different disk models with different characteristics and ages.
B. Some databases operate in ARCHIVELOGMODE and others in NOARCHIVELOGMODE.
C. The retention policy for backups are different for different databases.
D. Some database instances are shut down every night while others are always running.
E. There are partitioned tables where the older partitions are in read-only tablespaces and seldom accessed, but the more recent partitions are frequently accessed.
F. There are large nonpartitioned tables accessed frequently using indexes.
G. Applications using the databases have different Service-Level Agreements for response time and throughput.
正解：A,E,G

質問 6：
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
正解：A,B,D,E

質問 7：
Which optional parameter of the DESCRIPTION clause of a TNS entry can you use to randomize the access to available listeners?
A. SOURCE_ROUTE
B. TYPE OF SERVICE
C. FAILOVER
D. LOAD_BALANCE
正解：D

質問 8：
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

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

1. You have migrated your 10g R1 cluster to 10g R2. You wish to create multiple copies of the voting disk. What must you consider when doing this?

A) Since ASM is the stated direction of Oracle, ASM is the best storage for voting disks.
B) If multiplexing, three voting disks on independent devices is ideal.
C) For the voting disk, it is better to rely on multipathing solutions instead of multiplexing.
D) If multiplexing, two voting disks on independent devices is ideal.

2. You have a well-tuned, non-RAC single instance Oracle database with several services, all of which perform perfectly. You plan to migrate the database to RAC in the next two weeks and all file systems would be shared using Oracle Cluster File System. After the migration, you want to perform a test to monitor RAC-specific tuning issues that would not have occurred on a non-RAC database. Which six areas would you monitor to determine whether there are RAC-specific performance problems after migration? (Choose six.)

A) Services with applications that use external tables
B) Services with applications that truncate large tables
C) Instance recovery time
D) Services with query-intensive applications relying on full table scans
E) Interconnect latency
F) Services with insert-intensive applications that generate their own keys without Oracle sequences
G) Services with applications that have occasional queries, using index access on modestly sized tables
H) Services with insert-intensive applications that use Oracle sequences for index keys
I) Services with applications using local context variables

3. 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.

4. You are considering issues involving backup and recovery of the voting disk. Select four correct statements. (Choose four.)

A) Use symbolic links to simplify recovery of the voting disk.
B) You can determine the voting disks currently used by CSS with the command crsctl query ess votedisk.
C) To back up the voting disk, use the command ocrconfig -export.
D) Backup can be performed online.
E) If you lose your voting disk and do not have a backup, you must reinstall Oracle Clusterware.

5. 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.

質問と回答：

質問 # 1
正解： B

質問 # 2
正解： B、C、D、E、F、H

質問 # 3
正解： B

質問 # 4
正解： A、D、E

質問 # 5
正解： B、D