多項選擇題

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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單項選擇題

A developer has created a special servlet that is responsible for generating XML content that is sent to adata warehousing subsystem. This subsystem uses HTTP to request these large data files， which are compressed by the servlet to save internal network bandwidth. The developer has received a request frommanagement to create several more of these data warehousing servlets. The developer is about to copyand paste the compression code into each new servlet.
Which design pattern can consolidate thiscompression code to be used by all of the data warehousing servlets？（）

A.Facade
B.View Helper
C.Transfer Object
D.Intercepting Filter
E.Composite Facade

多項選擇題

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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Which two are characteristics of the Service Locator pattern？（）

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Which two are characteristics of the Transfer Object design pattern？（）

Which two are characteristics of the Service Locator pattern？（）