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Microsoft PRO: Designing and Developing Windows Azure Applications Sample Questions:

1. You are designing a Windows Azure application that will store data.
You have the following requirements:
-The data storage system must support the storage of more than 500 GB of data.
-Data retrieval must be possible from a large number of parallel threads without threads blocking each other.
You need to recommend an approach for storing data. What should you recommend?

A) Use a single SQL Azure database.
B) Use Windows Azure Table storage.
C) Use Windows Live Mesh 2011.
D) Use Windows Azure Queues.

2. 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?

A) When the worker role instance enters the main execution thread.
B) When the worker role instance instantiates the WCF service.
C) When Windows Azure initializes the worker role instance.
D) When the worker role instance receives its first request.

3. You are planning to migrate an existing web application to Windows Azure.
The application consists of an ASP.NET web application and a set of native Win32 Windows Services
that provide data to the application by using named pipes.
The Windows Services cannot be modified.
You need to recommend a strategy for migrating the application to Windows Azure.
What should you recommend?

A) Deploy the application and Windows Services in a Windows Azure VM role.
B) Deploy each Windows Service to a separate worker role. Deploy the ASP.NET application to a web role.
C) Define a Windows Communication Foundation (WCF) contract for the services.
D) Upload service binaries to a web role by using the Windows Azure Service Management API.

4. A Windows Azure application connects to a SQL Azure database.
Connections to the database are being dropped due to throttling.
You need to recommend an approach for identifying the root cause of the problem.
Which two actions should you recommend?
(Each correct answer presents part of the solution. Choose two.)

A) Use Dynamic Management Views to analyze performance issues.
B) Use SQL Profiler to analyze performance issues by configuring it to connect to SQL Azure.
C) Make sure the application is closing database connections that are not needed.
D) Decrease the connection timeout in the database connection string.

5. You are designing a Windows Azure application that will store data in two SQL Azure databases.
The application will insert data in both databases as part of a single logical operation.
You need to recommend an approach for maintaining data consistency across the databases.
What should you recommend?

A) Execute database calls on parallel threads.
B) Handle errors resulting from the database calls by using compensatory logic.
C) Wrap the database calls in a single transaction scope.
D) Use Microsoft Distributed Transaction Coordinator (MSDTC).

Solutions: