A. Execute database calls on parallel threads.B. Wrap t……

单项选择题An application connects to a SQL Azure database.  The application occasionally loses the connection to the SQL Azure database.   You need to recommend an approach for reliably completing data access operations.  What should you recommend？（）

A. Use Microsoft ADO.NET connection pooling.
B. Pass exceptions to the user interface layer.
C. Implement a retry policy in the data access layer.
D. Begin a transaction before each data access operation.

单项选择题You are designing an application that will use Windows Azure Table storage to store millions of data points each day.  The application must retain each day’s data for only one week.   You need to recommend an approach for minimizing storage transactions.  What should you recommend？（）

A. Use a separate table for each date.  Delete eachtable when it is one week old.
B. Use a separate table for each week.  Delete each table when it is one week old.
C. Use a single table， partitioned by date.  Use Entity Group Transactions to delete data when it is one week old.
D. Use a single table， partitioned by week.  Use Entity Group Transactions to delete data when it is one week old.

单项选择题You are designing a Windows Azure application that will use Windows Azure Table storage.  You need to recommend an approach for minimizing storage costs.  What should you recommend？ （）

A. Use Entity Group Transactions.
B. Use multiple partitions to store data.
C. Use a transaction scope to groupall storage operations.
D. Use Microsoft Distributed Transaction Coordinator （MSDTC）.

单项选择题You are designing a Windows Azure application that will use Windows Azure Table storage. The application will allow teams of users to collaborate on projects.  Each user is a member of only one team. You have the following requirements：   - Ensure that each user can efficiently query records related to his or her team’s projects.  - Minimize data access latency.   You need to recommend an approach for partitioning table storage entities. What should you recommend？ （）

A. Partition by user.
B. Partition by team.
C. Partition by project.
D. Partition by the current date.

多项选择题You are designing a plan for migrating Virtual Hard Disks （VHDs） and video files to Windows Azure Storage.  The VHDs must be optimized for random read write operation. The video files must be optimized for sequential access.  You need to recommend storage types for storing the VHDs and video files.   Which two storage types should you recommend？（）

A. Store VHDs in Windows Azure page blob storage.
B. Store VHDs in Windows Azure block blob storage.
C. Store video files in Windows Azure page blob storage.
D. Store video files in Windows Azure block blob storage