单项选择题
The Oracle Net architecture is based on which of the following？（）
A.OCI
B.OSI
C.TCP/IP
D.SNMP
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单项选择题
Whichofthefollowingfileshouldbeconfiguredfordynamicserviceregistration？（）
A.LISTENER.ORA
B.SQLNET.ORA
C.INIT.ORA
D.TNSNAMES.ORA -
单项选择题
Whichofthefollowingarchitecturesisusedtosupporttheagentortheapplicationtier？（）
A.Simple
B.Two-tier
C.N-tier
D.Client-server -
单项选择题
You just completed a manual open database backup. However there seems to be a problem with the database performance. You discover that the database is generating many log switches and the LGWR is consuming lots of CPU time. You have an idea of what the problem is and you begin looking at the information in V$BACKUP and in V$DATAFILE_HEADER. What do you suspect is the problem？（）
A.A
B.B
C.C
D.D
