OCP 1Z0 052 131
131. Which naming method uses the tnsnames.ora file to store the connect descriptor used by the clientwhile connecting to the database instance from a remote machine?
A.host naming method
B.local naming method
C.external naming method
D.directory naming method
Answer: B
This tnsnames.ora file is a configuration file that contains netservice names mapped to connect descriptorsfor the local naming method, or net servicenames mapped to listener protocol addresses.
A net service name is an alias mapped to a database network address contained in a connect descriptor. A connect descriptor contains the location of the listener through a protocol address and the servicename of the database to which to connect. Clients and database servers (that are clients of other database servers) use the net service name when making a connection with an application.
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