UptimeTier1~4级机房中，等级的可用性最高（） A: Tier 1 B: Tier 2 C: Tier 3 D: Tier 4

tier

A developer is designing the presentation tier for a web application that relies on a complex session bean.The session bean is still being developed and the APIs for it are NOT finalized. Any changes to the sessionbean API directly impacts the development of the presentation tier.  Which design pattern provides a meansto manage the uncertainty in the API？（） A: View Helper B: Front Controller C: Composite View D: Intercepting Filter E: Business Delegate

Which of the following would be an example of Tier 2 capital?

中国大学MOOC: Which of the following is the name of the Core J2EE tier?

According to the Constitution of the PRC, China’s administration currently uses a ____-tier system

中国大学MOOC: Tier 4 is for those who want to_____in the U.K.

Shenzhen is regarded as the _______ tier city. A: second B: first C: third D: fouth

Which of the following is the name of the Core J2EE tier? A: Business B: Integration C: Presentation D: All of the above

What is the middle tier in the three-tier architecture? A: Presentations B: Business logic and enterprise-wide business rules C: Data D: Control