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单选题
Which server stack communication layer corresponds to the client application layer in a distributed environment？（）
A
RDBMS
B
Application
C
Oracle Net foundation
D
Network Protocol
E
Presentation
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单选题Which server stack communication layer corresponds to the client application layer in a distributed environment？（）A
RDBMSB
ApplicationC
Oracle Net foundationD
Network ProtocolE
Presentation
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Server-to-server traffic always remains in the core layer.B
The recommended practice is for the core infrastructure to be in Layer 3.C
The boundary between Layer 2 and Layer 3 should be implemented in the aggregation layer.D
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transportB
networkC
presentationD
sessionE
application
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