Free Oracle 1Z0-048 Practice Test & Real Exam Questions

Exam Code/Number: 1Z0-048
Exam Name/Title: Oracle Database 10g R2: Administering RAC
Certification Provider: Oracle
Corresponding Certification: Other Oracle Certification

Exam Questions: 150
Updated On: Sep 23, 2026

Question #1

View the Exhibit and examine an installation step of Oracle Enterprise Manager Grid Control 10gR2 to manage your RAC installation. You entered the host name but you are not sure about the port number. Thefollowing is the list of port numbers from the host ed-otraclin17b.us.oracle.com:

A. 5561

B. 4889

C. 3938

D. 1521

E. 1158

Discussion 0

Correct Answer: D Vote an answer

Question #2

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 may use the command:
crsctl add ess votedisk <new voting disk path>

B. You should not use symbolic links.

C. You can add additional voting disks online.

D. You must add additional voting disks offline.

E. You may use the VIPCA utility to add new voting disks.

Discussion 0

Correct Answer: A,C Vote an answer

Question #3

Which background process communicates load information to its listener?

A. SMON

B. MMON

C. PMON

D. LMON

Discussion 0

Correct Answer: C Vote an answer

Question #4

Which two statements regarding the installation of the Oracle 10g Database software are true? (Choose two.)

A. The OUI does not support a RAC installation if the Standard Edition is chosen from the Installation Type page.

B. The directory path for the Oracle 10g Database software must not be the same as the Oracle 10g Clusterware home directory.

C. The Oracle Universal Installer (OUI) can detect the cluster hardware and allow the user to install the software on the local node or choose all nodes to install the software.

D. If the OUI does not display all of the available nodes in your cluster, check the viability of your cluster and its associated nodes by executing the chkcluster command from $ORA_CRS_HOME/bin directory.

Discussion 0

Correct Answer: B,C Vote an answer

Question #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. two on RAC02

B. one on RAC01 and one on RAC02

C. only one on RAC01

D. two on RAC01

Discussion 0

Correct Answer: B Vote an answer

Question #6

Several steps must be followed to successfully add a new node to your cluster database. Assuming that a UNIX platform is used, which of the three steps below are correct? (Choose three.)

A. Configure the OS and hardware for the new node.

B. Add the RAC software to the new node using addnode.sh from ORA_CRS_HOM

C. Reconfigure listeners for the new node with netca.

D. Add instances using OUI.

E. Add the node to the cluster using the addnode.sh script run from ORA_CRS_HOME.

Discussion 0

Correct Answer: A,C,E Vote an answer

Question #7

Your network administrator wants to know why you need extra IP addresses for your Oracle Real Applications Cluster now that you are upgrading from OracleSi to Oracle 10g. Which four statements would you use to explain to your network administrator the reason for requiring extra IP addresses? (Choose four.)

A. Database clients should connect to a RAC database using VIPs for the best High Availability solution.

B. The VIPs are used to circumvent network timeouts on the Cluster Interconnect.

C. The VIPs should be registered in the DNS.

D. The VIPs are used to prevent connection request timeouts during client connection attempts.

E. The VIPs should not be registered in the DNS.

F. A VIP would notify its client when a failure occurs.

G. A VIP would always accept a connection from a client.

H. The VIP addresses must be on the same subnet as the public host network addresses.

Discussion 0

Correct Answer: A,C,D,H Vote an answer

Question #8

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 may use the command:
crsctl add ess votedisk <new voting disk path>

B. You should not use symbolic links.

C. You can add additional voting disks online.

D. You must add additional voting disks offline.

E. You may use the VIPCA utility to add new voting disks.

Discussion 0

Correct Answer: A,C Vote an answer

Question #9

View the Exhibit.
You are required to support your Oracle RAC configuration using ASM and RAID technology. You plan to discuss the storage configuration with the storage technology team. They have proposed a configuration as shown in the exhibit with a separate set of LUNs for the data disk group and the flash recovery area disk group and a 500 KB stripe size in line with other non-Oracle LUNs. The Data disk group has four250G LUNs and the FRA disk group has four500G LUNS, both of which are mirrored.

A. Retention policies that require backups to be kept for long time periods may cause wasted space due to large allocation units.

B. The LUNs are not aligned with ASM Allocation Units, which may lead to I/O bottlenecks.

C. Index Range Scans would cause I/O to many different physical disks.

D. I/O to the flash recovery area disk group for backups may cause performance issues when full table scans are occurring during batch workloads.

Discussion 0

Correct Answer: A,B,D Vote an answer

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