It encapsulates component lookup procedures
It increases source code duplication and decreases reuse
It improves client performance by caching context and factory objects
It degrades network performance due to increased access to distributed lookup services
第1题：
Which is characteristic of the Business Delegate pattern？（）
第2题：
Which two are characteristics of the Service Locator pattern？（）
第3题：
The distance between any two meridians measured along a parallel of latitude ______.
A.increases in north latitude and decreases in south latitude
B.decreases as DLO increases
C.increases with increased latitude
D.decreases with increased latitude
第4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？（）
第5题：
Which of the following performance tools will work with optimized code and also provides source statement profiling？（）
第6题：
In an n-tier application， which two invocations are typically remote， not local？（）
第7题：
According to Ohm’s Law， which of the following is correct？（）
第8题：
Reusing frequencies in a cellular pattern (compared to “one big cell”)（）
第9题：
Company.com has decided to use the FUBAR Application Server to host their web application. Unfortunately， the FUBAR Application Server uses the server machine’s file system for its JNDI namespace. Every JNDI lookup performed in the web application is translated into a file 1/0 operation， which results in very poor performance. Which J2EE pattern can help with this performance issue？（）
第10题：
Which the two are characteristics of the Service Locator pattern？（）