多項(xiàng)選擇題Which two are characteristics of the Service Locator pattern？（）

A.It encapsulates component lookup procedures.
B.It increases source code duplication and decreases reuse.
C.It improves client performance by caching context and factory objects.
D.It degrades network performance due to increased access to distributed lookup services.


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2.多項(xiàng)選擇題Which two are characteristics of the Transfer Object design pattern？（）

A.It reduces network traffic by collapsing multiple remote requests into one.
B.It increases the complexity of the remote interface by removing coarse-grained methods.
C.It increases the complexity of the design due to remote synchronization and version control issues.
D.It increases network performance introducing multiple fine-grained remote requests which return verysmall amounts of data.

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