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Java认证考试

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You are designing an n-tier Java EE application. You have already decided that some of your JSPs willneed to get data from a Customer entity bean. You are trying to decide whether to use a Customer stubobject or a Transfer Object. Which two statements are true?()

  • A、The stub will increase network traffic.
  • B、The Transfer Object will decrease data staleness.
  • C、The stub will increase the logic necessary in the JSPs.
  • D、In both cases, the JSPs can use EL expressions to get data.
  • E、Only the Transfer Object will need to use a Business Delegate.
正确答案:A,D
答案解析:
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