Jamonero Blanco
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OCA OCA Quiz on OCA-12-Uderstanding Oracle Network Architecture, created by Jamonero Blanco on 01/30/2017.

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Jamonero Blanco
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OCA-12-Uderstanding Oracle Network Architecture

Question 1 of 20

1

1. Which of the following files must be present on the Oracle server to start a nondefault
Oracle listener?

Select one or more of the following:

  • A. listener.ora

  • B. lsnrctl.ora

  • C. sqlnet.ora

  • D. tnsnames.ora

Explanation

Question 2 of 20

1

2. Which of the following is the correct way to start a listener called LISTENER ?

Select one or more of the following:

  • A. lsnrctl startup listener

  • B. lsnrctl start

  • C. netca start

  • D. netmgr start listener

Explanation

Question 3 of 20

1

3. When dynamic service registration is used, you will not see the service listed in which
of the following files where it would normally be located?

Select one or more of the following:

  • A. sqlnet.ora

  • B. tnsnames.ora

  • C. listener.ora

  • D. None of the above

Explanation

Question 4 of 20

1

4. Connection Manager provides which of the following?

Select one or more of the following:

  • A. Multiplexing

  • B. Cross-protocol connectivity

  • C. Network access control

  • D. All of the above

Explanation

Question 5 of 20

1

5. Which is a requirement for using host naming?

Select one or more of the following:

  • A. You must use tnsnames.ora on the client.

  • B. You must be using TCP/IP.

  • C. You must have an OID present.

  • D. You must have a sqlnet.ora file present on the client.

  • E. None of the above.

Explanation

Question 6 of 20

1

6. Which statements regarding Database Resident Connection Pooling (DRCP) are true?
(Choose two.)

Select one or more of the following:

  • A. When a DRCP pooled server connection is made by an application, it is equivalent
    to a dedicated server connection.

  • B. When a database has DRCP enabled, all connections default to a pooled connec-
    tion unless DEDICATED server is explicitly specified in the connect string.

  • C. When an application using the DRCP connection disconnects, the server connec-
    tion (process) is handed off to the broker.

  • D. When using the Oracle Net Easy Connect method, it is not possible to utilize DRCP.

Explanation

Question 7 of 20

1

7. A client receives the following error message:
"ORA-12154 TNS:could not resolve the connect identifier specified"
Which of the following could be possible causes of the error? Choose all that apply.

Select one or more of the following:

  • A. The listener is not running on the Oracle server.

  • B. The user entered an invalid net service name.

  • C. The user supplied the correct net service name, but the net service name is mis-
    spelled in the tnsnames.ora file on the client file.

  • D. The listener is not configured to listen for this service.

Explanation

Question 8 of 20

1

8. What portion of the tnsnames.ora file specifies the name or IP address of the server
where the listener process is listening?

Select one or more of the following:

  • A. CONNECT_DATA

  • B. SERVER

  • C. SERVICE_NAME

  • D. HOST

Explanation

Question 9 of 20

1

9. A client wants to connect to the database service dbprod.com located on the dbprod.com
server through a nondefault port (1522) using Oracle Easy Connect. Which of the fol-
lowing connect strings are the choices for the client to use? (Choose two.)

Select one or more of the following:

  • A. CONNECT scott/tiger@dbprod.com:1522

  • B. CONNECT scott/tiger@1522:dbprod.com/dbprod.com

  • C. CONNECT scott/tiger@//dbprod.com/1522:dbprod.com

  • D. CONNECT scott/tiger@dbprod.com:1522/dbprod.com

Explanation

Question 10 of 20

1

10. All of the following are reasons to configure the server using Shared Server except
which one?

Select one or more of the following:

  • A. Overall memory utilization is reduced.

  • B. The system is predominantly used for decision support with large result sets
    returned.

  • C. The system is predominantly used for small transactions with many users.

  • D. The number of idle connections on the server is reduced.

Explanation

Question 11 of 20

1

11. Which of the following is true about Shared Server?

Select one or more of the following:

  • A. Dedicated connections cannot be made when Shared Server is configured.

  • B. It is recommended that DSS type batch jobs be performed when connected via
    Shared Server.

  • C. The database can be started when connected via Shared Server.

  • D. The database cannot be stopped when connected via Shared Server.

Explanation

Question 12 of 20

1

12. The administrator wants to allow a user to connect via a dedicated connection
into a database configured in Shared Server mode. Which of the following options
accomplishes this?

Select one or more of the following:

  • A. (SERVER=DEDICATED)

  • B. (CONNECT=DEDICATED)

  • C. (INSTANCE=DEDICATED)

  • D. (MULTITHREADED=FALSE)

  • E. None of the above

Explanation

Question 13 of 20

1

13. In which of the following files would you find the Shared Server configuration
parameters?

Select one or more of the following:

  • A. listener.ora

  • B. mts.ora

  • C. init.ora

  • D. tnsnames.ora

  • E. sqlnet.ora

Explanation

Question 14 of 20

1

14. What is the first step that the dispatcher performs after it receives a request from the user?

Select one or more of the following:

  • A. Pass the request to a shared server.

  • B. Place the request in a request queue in the PGA.

  • C. Place the request in a request queue in the SGA.

  • D. Process the request.

Explanation

Question 15 of 20

1

15. When configured in Shared Server mode, which of the following is contained in the PGA?

Select one or more of the following:

  • A. Cursor state

  • B. Sort information

  • C. User session data

  • D. Stack space

  • E. None of the above

Explanation

Question 16 of 20

1

16. Which of the following is false about request queues?

Select one or more of the following:

  • A. They reside in the SGA.

  • B. They are shared by all the dispatchers.

  • C. Each dispatcher has its own request queue.

  • D. The shared server processes remove requests from the request queue.

Explanation

Question 17 of 20

1

17. What is the process that notifies the listener after a database connection is established?

Select one or more of the following:

  • A. SMON

  • B. PMON

  • C. LREG

  • D. LGWR

Explanation

Question 18 of 20

1

18. Which network architecture connection uses session memory from the SGA?

Select one or more of the following:

  • A. Dedicated Server

  • B. Shared Server

  • C. Database Resident Connection Pooling

  • D. All of the above

Explanation

Question 19 of 20

1

19. Communication between two Oracle databases is configured using:

Select one or more of the following:

  • A. Database Resident Connection Pooling

  • B. Database link

  • C. Connection Manager

  • D. Oracle Net Manager

Explanation

Question 20 of 20

1

20. DBA user MIKE ran the SQL statement CREATE DATABASE LINK SCOTT.SALES_LINK
.BJS.COM CONNECT TO SALES_INT IDENTIFIED BY SALESPWD1 USING 'ocasvr:1522/
ocadb' . Choose the option that is true.

Select one or more of the following:

  • A. Use of 'ocasvr:1522/ocadb' is invalid in database link definition.

  • B. A private database link is created under user MIKE.

  • C. A private database link is created under user SCOTT.

  • D. If the SALES_INT user does not exist or its password is not SALESPWD1 , the database
    link will not be created.

Explanation

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