In one of your databases, the user HR has the password HRMGR.
You want to connect to a database instance whose listener listens on port 1531 by using this statement:
CONNECT HR/HRMGR@orcl
No name server is used.
Which statement is true about ORCL?
A. It must be the value of the SERVICE_NAMES parameter on the client side
B. It must resolve to a valid connect descriptor in the server’s tnsnames.ora file
C. It must resolve to a valid connect descriptor in the client’s tnsnames.ora file
D. It must be the name of the database to whose instance HR wishes to connect
E. It must be the name of the server running the database to whose instance HR wishes to connect
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C