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.
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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单选题A developer is designing a web application that makes many fine-grained remote data requests for each client request. During testing， the developer discovers that the volume of remote requests significantly degrades performance of the application. Which design pattern provides a solution for this problem？（）A FlyweightB Transfer ObjectC Service LocatorD Dispatcher ViewE Business DelegateF Model-View-Controller
多选题Which two statements are true about Oracle ActiveCache ？（）Ait supports very large data-sets such as the result-sets from large search queries to be held in memoryBit provides a set of management tools that enables automation of configurationCit provides enhanced visibility across the entire application infrastructureDit significantly increases the performance of Web-based applications with no code change
多选题Which the two are characteristics of the Service Locator pattern？（）AIt encapsulates component lookup proceduresBIt increases source code duplication and decreases reuseCIt improves client performance by caching context and factory objectsDIt degrades network performance due to increased access to distributed lookup services
多选题Which two are characteristics of the Transfer Object design pattern？（）AIt reduces network traffic by collapsing multiple remote requests into one.BIt increases the complexity of the remote interface by removing coarse-grained methods.CIt increases the complexity of the design due to remote synchronization and version control issues.DIt increases network performance introducing multiple fine-grained remote requests which return verysmall amounts of data.
单选题Which of the following performance tools will work with optimized code and also provides source statement profiling？（）A profB gprofC kprofD tprof
多选题Which two are characteristics of the Service Locator pattern？（）AIt encapsulates component lookup procedures.BIt increases source code duplication and decreases reuse.CIt improves client performance by caching context and factory objects.DIt degrades network performance due to increased access to distributed lookup services.
单选题According to Ohm’s Law， which of the following is correct？（）AAs voltage increases， resistance decreasesBAs amperage decreases， resistance decreasesCAs resistance decreases， amperage increasesDAs resistance increases， voltage increases
单选题Which of the following best describes the thermodynamic effect on the pressure and volume relationship with regards to saturated gases?（）AAs pressure decreases, volume increasesBAs volume increases, pressure increasesCAs volume decreases, pressure decreasesDAs pressure increases, volume increases
单选题Which is characteristic of the Business Delegate pattern？（）A It decreases complexity by removing a layer of proxy classes.B It reduces coupling between tiers by hiding implementation details.C It decreases performance due to the lack of caching of remote data.D It forces business-tier expectations to be dealt with in the presentation-tier.