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Oracle Database 10g R2: Administering RAC Sample Questions:

1. Which three statements are correct regarding ASM instances in a RAC environment? (Choose three.)

A) ASM instances must all have the same value for ASM DISKGROUPS.
B) ASM instances must all have the same value for ASM_DISKSTRING.
C) ASM instances recognize their disks by looking at their headers.
D) ASM instances can mount different sets of disk groups.
E) ASM instances can use different values for ASM_POWER_LIMIT.

2. You are asked to investigate a problem regarding client connectivity between the HR service and a database, which is on a four-node RAC cluster. The HR service has four preferred instances on the RAC cluster. This cluster also supports five other services. Occasionally, a client-connect request for the HR service takes several minutes to connect, whereas the other five services connect within a second or two. Client-side and server-side connection load balancing are used for all the services. Which combination of network settings would explain these symptoms? (Choose two.)

A) The listener on one or more nodes is listening only on the Virtual IP address and the HR TNSNAMES entry uses the Hostnames for the Virtual IP addresses.
B) The TNSNAMES.ORA file has an entry for the HR service that uses only the host name for the public IP address, and all the listeners listen on both the Public and Virtual IP addresses.
C) The TNSNAMES. ORA file has an entry for all six services that uses the host name for the Public IP address and not the Virtual IP address.
D) The listener on one or more nodes is listening on both the Public IP address and the Virtual IP address, and the HR TNSNAMES entry uses the Virtual IP address.
E) The TNSNAMES. ORA file has an entry for the five other services that use the hostnames for the Virtual IP addresses and all the listeners listen on both the Public and Virtual IP addresses.

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 least loaded instance.
B) It connects you to the least loaded node.
C) It randomizes its connection request on the available listeners.
D) It connects you to the instance on the least loaded node that currently accepts logins for the SALES.US.ACME.COM service.

4. View the Exhibit.
You are asked to help a colleague to logically remove node NLEDUC2 from a RAC cluster
installation.
On observing the colleague's terminal, you notice the output as seen in the exhibit. Based on this,
which five additional steps would you recommend? Do not be concerned with the correct
sequence for the steps.
(Choose five.)

A) Stop and restart the nodeapps on NLEDUC1.
B) Check that the ONS configuration has been updated on the remaining node.
C) Check that the software has been removed from the database and ASM homes on NLEDUC2.
D) Check that the database and ASM instances are all terminated on NLEDUC2.
E) Check that the node has been removed from the database and ASM inventories.
F) Remove the node from the clusterware.
G) Stop and restart the clusterware on NLEDUC1.
H) Remove the listener from NLEDUC2.

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

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