You are connecting to an Oracle database server from a client by using the following connect string：   SQL> CONNECT hr/hr@pdserver.us.oracle.com：1521/proddb   Which naming method is being used in this case？（）

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• You are connecting to an Oracle database server from a client by using the following connect string：  SQL> CONNECT hr/hr@pdserver.us.oracle.com：1521/proddb  Which naming method is being used in this case？（）

  A . Local Naming B . Easy Connect C . External Naming D . Directory Naming

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• You connected to the database using the following connection string： CONNECT hr/hr@test.us.oracle.com：1521/mydb  Which three statements are correct regarding the connection string？（）

  A . mydb is a service name. B . test.us.oracle.com is a database name. C . 1521 is the listener port number. D . mydb is a host name. E . test.us.oracle.com is a net service name. F . hr is a username. G . test.us.oracle.com is an instance name.

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• You are an administrator of a small business network. You have one dial-up account at an ISP and want all computers on your network connect to the Internet. What should you do？ （）

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