多选题You need to store elements in a collection that guarantees that no duplicates are stored. Which two interfaces provide that capability？（）AJava.util.MapBJava.util.SetCJava.util.ListDJava.util.StoredSetEJava.util.StoredMapFJava.util.Collection

第1题：

You need to store elements in a collection that guarantees that no duplicates are stored and all elements can be accessed in natural order. Which interface provides that capability？（）  

• A、Java.util.Map.
• B、Java.util.Set.
• C、Java.util.List.
• D、Java.util.StoredSet.
• E、Java.util.StoredMap.
• F、Java.util.Collection.

第2题：

You work as an application developer at Certkiller .com. Certkiller .com has been hired by a small local private school to develop a class library that will be used in an application named ManageAttendance for the purpose of managing student records.You are responsible for developing this class library. Certkiller .com has instructed you to create a collection in the application to store learners’ results. The school has informed you that they currently only have seven learners， but that this value will triple in the following year. Due to the limited resources， you need to ensure that the collection you create consumes a minimum amount of resources. What should you use to create the collection？（）

• A、 The HybridDictionary collection class.
• B、 The HashTable collection class.
• C、 The ListDictionary collection class.
• D、 The StringCollection collection class.

第3题：

You are creating a Windows Communication Foundation (WCF) service. The service endpoints change frequently. On the service, you add a new ServiceDiscoveryBehavior to the Behaviors collection of the ServiceHost Description property. You need to ensure that client applications can communicate with the service and discover changes to the service endpoints. What should you do?（）

• A、Add a new ServiceDiscoveryBehavior to the Behaviors collection in the client application.
• B、Add a new AnnouncementClient to the Behaviors collection in the client application.
• C、Use the FindCriteria class and the UdpDiscoveryEndpoint class to set up the binding in the client application.
• D、Use the DiscoveryProxy class and the EndpointDiscoveryMetadata class to set up the binding in the client application.

第4题：

You work as an application developer at Certkiller .com. Certkiller .com has been contracted to develop an application for the local bank.You have been given the responsibility of creating this application and need to store each transaction record， which is identified using a complex transaction identifier，in memory. The bank informs you that the total amount of transaction records could reach 200 per day. To achieve this， you decide to utilize one of the existing collection classes in the .NET 2.0 class library. You need to ensure that you the collection class you select is the most efficient one for storing transaction records.What should you do？（）

• A、 Select the ListDictionary collection class.
• B、 Select the HashTable collection class.
• C、 Select the Queue collection class.
• D、 Select the StringCollection collection class.

第5题：

You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. You are going to use the data collector to gather performance data periodically on all instances. You must store all collected data in the same database. This database is hosted on a single instance. Every five hours, you have to collect and load performance data in the management data warehouse. Which data collection process should you implement? （） 

• A、You should create a cached data collection 
• B、You should create an on-demand non-cached data collection 
• C、You should create a scheduled non-cached data collection. 
• D、You should create two different SQL Agent jobs. The two jobs are scheduled at the same time. One job uploads the data collection and the other job creates a data collection.

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第13题：

You are evaluating a Windows Azure application.  The application includes the following elements：   - A web role that provides the ASP.NET user interface and business logic   - A single SQL Azure database that contains all application data    Each page must receive data from the business logic layer before returning results to the client.  Traffic has increased significantly.   The business logic is causing high CPU usage.   You need to recommend an approach for scaling the application.  What should you recommend？（）

• A、 Move business logic to a worker role.
• B、 Vertically partition the SQL Azure database.
• C、 Store business logic results in Windows Azure local storage.
• D、 Store business logic resultsin Windows Azure Table storage

第14题：

请选择合适的选项，补充下列英文句子: Thank you for your（） to my store, you can find the products you need from my store.

• A、visitted
• B、visited
• C、visits
• D、visiting

第15题：

You are developing a custom-collection class.You need to create a method in your class. You need to ensure that the method you create in your class returns a type that is compatible with the Foreach statement. Which criterion should the method meet？（）

• A、The method must return a type of either IEnumerator or IEnumerable.
• B、The method must return a type of IComparable.
• C、The method must explicitly contain a collection.
• D、The method must be the only iterator in the class.

第16题：

You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You use the ClickOnce deployment methodology to distribute the application. You need to store application-specific data along with read/write permissions without requiring elevated permissions for the application. Where should you store the application data?（）

• A、 In isolated storage.
• B、 On the database server.
• C、 In the ClickOnce data directory.
• D、 In the App.config file of the application.

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