多选题A Company.com developer has created a web application that includes a servlet for each use case in the application. These servlets have become rather difficult to maintain because the request processing methods have become very large. There is also com

第1题：

A Company.com 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 are NOT finalized. Any changes to the session bean API directly impacts the development of the presentation tier.  Which design pattern provides a means to manage the uncertainty in the API？（）

• A、 View Helper
• B、 Front Controller
• C、 Composite View
• D、 Intercepting Filter
• E、 Business Delegate
• F、 Chain of Responsibility

第2题：

A Company.com developer is designing a multi-tier web application and discovers a need to hide the details of establishing and maintaining remote communications from the client. In addition， because the business and resource tiers are distributed， the application needs to minimize the inter-tier network traffic related to servicing client requests.  Which design patterns， working together， address these issues？（）

• A、 Front Controller and Transfer Object
• B、 Front Controller and Service Locator
• C、 Business Delegate and Transfer Object
• D、 Business delegate and Intercepting Filter
• E、 Model-View-Controller and Intercepting Filter

第3题：

During a planning meeting， Company.com indicates that they intend to make a relational  Database highly available. The application has a pre-requisite that a kernel extension be loaded from /etc/inittab.  How would this be managed in an HACMP environment？（）  

• A、 It can be started with a crontab entry.
• B、 It can be created as an Application Server.
• C、 It can be added to a resource group as a dependency.
• D、 It cannot be done because HACMP provides no method to order application start/stop scripts.

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？（）

• A、 Flyweight
• B、 Transfer Object
• C、 Service Locator
• D、 Dispatcher View
• E、 Business Delegate
• F、 Model-View-Controller

第5题：

Company.com has a database application and a Web server application running on the same p5-570 server in a single partition. Recently there have been a number of instances where the increased load on the database server has impacted the performance of the Web server. What can the technical specialist recommend to keep the database application from impacting the performance of the Web server？（）

• A、Create a VLAN between the web server and database server.
• B、Purchase APV and install the VIOS.
• C、Increase the priority of the Web server.
• D、Create separate LPARs for Web and database workloads.

第6题：

Squeaky Beans Inc. hired an outside consultant to develop their web application. To finish the job quickly， the consultant created several dozen JSP pages that directly communicate with the database. The Squeaky business team has since purchased a set of business objects to model their system， and the Squeaky developer charged with maintaining the web application must now refactor all the JSPs to work with the new system.  Which pattern can the developer use to solve this problem？（）

• A、 Transfer Object
• B、 Service Locator
• C、 Intercepting Filter
• D、 Business Delegate

第7题：

Company.com has a six-node concurrent resource group with an application that is accessed by  a web connection to the cluster nodes. How is the workload moved to another cluster node during a node failure？（）  

• A、 The concurrent application must control the web interface through application monitoring.
• B、 A second resource group will be required to move the web application and IP label to a new node during a node failure.
• C、 The concurrent resource group can support multiple IP labels through IP aliasing so all IP labels are defined in the concurrent resource group.
• D、 The dynamic node priority facility in HACMP will relocate the web application and the IP label，if it is correctly defined in the application start and stop script.

第8题：

A developer is designing a web application that must verify for each request： The originating request is froma trusted network. The client has a valid session.The client has been authenticated. Which design pattern provides a solution in this situation？（）

• A、Transfer Object
• B、Session Facade
• C、Intercepting Filter
• D、Template Method
• E、Model-View-Controller

第9题：

The Squeaky Bean company has decided to port their web application to a new J2EE 1.4 container. Whilereviewing the application， a developer realizes that in multiple places within the current application， nearlyduplicate code exists that finds enterprise beans. Which pattern should be used to eliminate this duplicatecode？（）

• A、Transfer Object
• B、Front Controller
• C、Service Locator
• D、Intercepting Filter
• E、Business Delegate
• F、Model-View-Controller

第10题：

A developer is designing a web application that makes many fine-grained remote data requests for eachclient request. During testing， the developer discovers that the volume of remote requests significantlydegrades performance of the application. Which design pattern provides a solution for this problem？（）

• A、Flyweight
• B、Transfer Object
• C、Service Locator
• D、Dispatcher View
• E、Business Delegate
• F、Model-View-Controller