You plan to host a Windows Communication Foundation （WCF） service in a Windows Azure worker role. 
Custom code is necessary to initialize and configure the service endpoint.  
You need to recommend the point at which the application should initialize the WCF service. 
What should you recommend？（）

单项选择题You are designing a Windows Azure application.   The application will include services hosted in different geographic locations.  The service locations may change.   You must minimize the cost of communication between services.  You need to recommend an approach for calling the services.  What should you recommend？（）

A. Use the Service Management API.
B. Use Windows Azure Table storage.
C. Use Windows Azure Queue storage.
D. Use the Windows Azure AppFabric Service Bus.

单项选择题You are evaluating a Windows Azure application. The application uses one instance of a web role. The role instance size is set to Medium. The application does not use SQL Azure.   You have the following requirements for scaling the application：   - Maximize throughput.  - Minimize downtime while scaling. - Increase system resources.   You need to recommend an approach for scaling the application.  What should you recommend？（）

A. Set up vertical partitioning.
B. Set up horizontal partitioning.
C. Increase the number of role instances.
D. Change the role instance size to large.

单项选择题You are designing a Windows Azure application.   The application will store data in Windows Azure Blob storage.  Many of the application services will be interdependent.   You need to recommend an approach for optimizing the performance of the application.  What should you recommend？ （）

A. Create one affinity group.  Associate only the storage services with the affinity group.
B. Create one affinity group.  Associate only the compute services with the affinity group.
C. Create one affinity group.  Associate the compute services and storage services with the affinity group.
D. Create two affinity groups.  Associate the compute services with one group and the storage services with the other group.

单项选择题You are designing a Windows Azure application that will use a worker role. The worker role will create temporary files.  You need to recommend an approach for creating the temporary files that minimizes storage transactions.  What should you recommend？（）

A. Create the files on a Windows Azure Drive.
B. Create the files in Windows Azure local storage.
C. Create the files in Windows Azure Storage page blobs.
D. Create the files in Windows Azure Storage block blobs.

单项选择题You are planning the migration of an existing application to Windows Azure and SQL Azure.  The application produces report files at the request of remote systems.   Requests for report files will be placed into a single Windows Azure Queue.   You must minimize the compute resources and storage transactions required to process the requests.   You need to recommend an approach for processing the requests. What should you recommend？（）

A. Create a worker role for each report file that constantly polls the queue for requests.
B. Create a workerrole for each report file that checks the queue at scheduled intervals for requests.
C. Create a single worker role that constantly polls the queue for requests and executes the requests on multiple threads.
D. Create a single worker role that checks the queue at scheduled intervals for requests and executes the requests on multiple threads.