###BeginCaseStudy###
Topic 1, Flight Information
Background
You are developing a flight information consolidation service. The service retrieves flight information
from a number of sources and combines them into a single data set. The consolidated flight information
is stored in a SQL Server database. Customers can query and retrieve the data by using a REST API
provided by the service.
The service also offers access to historical flight information. The historical flight information can be
filtered and queried in an ad hoc manner.
The service runs on a Windows Azure Web Role. SSL is not used.
Business Requirements
 A new data source for historical flight information is
being developed by a contractor located on another continent.
 If a time zone is not specified, then it should be
interpreted as Coordinated Universal Time (UTC).
 When you upgrade a service from a staging deployment
to a production deployment, the time that the service is
unavailable must be minimized.
 The default port must be used for HTTP.
Technical Requirements
The existing sources of flight information and the mechanism of exchange are listed below.
 Blue Yonder Airlines provides flight information in an
XML file.
 Consolidated Messenger provides flight information in a
Microsoft Access database that is uploaded every 12 hours to
the service using SFTP. The company uses port 22 for SFTP. Margie’s Travel provides and consumes flight
information using serialized ADO.NET DataSets. Data is
periodically synced between the service and Margie’s Travel.
 Trey Research provides data from multiple sources
serialized in proprietary binary formats. The data must be read
by using .NET assemblies provided by Trey Research. The
assemblies use a common set of dependencies. The current
version of the Trey Research assemblies is 1.2.0.0. All
assemblies provided by Trey Research are signed with a key pair
contained in a file named Trey.snk, which Trey Research also
supplies.
 The application specification requires that any thirdparty assemblies must have strong names.
Application Structure

###EndCaseStudy###

DRAG DROP
You need to parse flight information from Blue Yonder Airlines. The content of the XML file is shown
below.

Some airlines do not specify the timezone of the arrival time. If the timezone is not specified, then it
should be interpreted per the business requirements.You need to implement the LoadFlights() and Parse() methods of the BlueYonderLoader class.
What should you do? (To answer, drag the appropriate code segments to the correct location in the
answer area. Each segment may be used once, more than once, or not at all. You may need to drag the
split bar between panes or scroll to view content.)

###BeginCaseStudy###
Topic 1, Flight Information
Background
You are developing a flight information consolidation service. The service retrieves flight information
from a number of sources and combines them into a single data set. The consolidated flight information
is stored in a SQL Server database. Customers can query and retrieve the data by using a REST API
provided by the service.
The service also offers access to historical flight information. The historical flight information can be
filtered and queried in an ad hoc manner.
The service runs on a Windows Azure Web Role. SSL is not used.
Business Requirements
 A new data source for historical flight information is
being developed by a contractor located on another continent.
 If a time zone is not specified, then it should be
interpreted as Coordinated Universal Time (UTC).
 When you upgrade a service from a staging deployment
to a production deployment, the time that the service is
unavailable must be minimized.
 The default port must be used for HTTP.
Technical Requirements
The existing sources of flight information and the mechanism of exchange are listed below.
 Blue Yonder Airlines provides flight information in an
XML file.
 Consolidated Messenger provides flight information in a
Microsoft Access database that is uploaded every 12 hours to
the service using SFTP. The company uses port 22 for SFTP. Margie’s Travel provides and consumes flight
information using serialized ADO.NET DataSets. Data is
periodically synced between the service and Margie’s Travel.
 Trey Research provides data from multiple sources
serialized in proprietary binary formats. The data must be read
by using .NET assemblies provided by Trey Research. The
assemblies use a common set of dependencies. The current
version of the Trey Research assemblies is 1.2.0.0. All
assemblies provided by Trey Research are signed with a key pair
contained in a file named Trey.snk, which Trey Research also
supplies.
 The application specification requires that any thirdparty assemblies must have strong names.
Application Structure

###EndCaseStudy###

You are adding a new REST service endpoint to the FlightDataController controller that returns the total
number of seats for each airline.
You need to write a LINQ to Entities query to extract the required data.
Which code segment should you use?

###BeginCaseStudy###
Topic 1, Flight Information
Background
You are developing a flight information consolidation service. The service retrieves flight information
from a number of sources and combines them into a single data set. The consolidated flight information
is stored in a SQL Server database. Customers can query and retrieve the data by using a REST API
provided by the service.
The service also offers access to historical flight information. The historical flight information can be
filtered and queried in an ad hoc manner.
The service runs on a Windows Azure Web Role. SSL is not used.
Business Requirements
 A new data source for historical flight information is
being developed by a contractor located on another continent.
 If a time zone is not specified, then it should be
interpreted as Coordinated Universal Time (UTC).
 When you upgrade a service from a staging deployment
to a production deployment, the time that the service is
unavailable must be minimized.
 The default port must be used for HTTP.
Technical Requirements
The existing sources of flight information and the mechanism of exchange are listed below.
 Blue Yonder Airlines provides flight information in an
XML file.
 Consolidated Messenger provides flight information in a
Microsoft Access database that is uploaded every 12 hours to
the service using SFTP. The company uses port 22 for SFTP. Margie’s Travel provides and consumes flight
information using serialized ADO.NET DataSets. Data is
periodically synced between the service and Margie’s Travel.
 Trey Research provides data from multiple sources
serialized in proprietary binary formats. The data must be read
by using .NET assemblies provided by Trey Research. The
assemblies use a common set of dependencies. The current
version of the Trey Research assemblies is 1.2.0.0. All
assemblies provided by Trey Research are signed with a key pair
contained in a file named Trey.snk, which Trey Research also
supplies.
 The application specification requires that any thirdparty assemblies must have strong names.
Application Structure

###EndCaseStudy###

You need to load flight information provided by Consolidated Messenger.
What should you use?

###BeginCaseStudy###
Topic 1, Flight Information
Background
You are developing a flight information consolidation service. The service retrieves flight information
from a number of sources and combines them into a single data set. The consolidated flight information
is stored in a SQL Server database. Customers can query and retrieve the data by using a REST API
provided by the service.
The service also offers access to historical flight information. The historical flight information can be
filtered and queried in an ad hoc manner.
The service runs on a Windows Azure Web Role. SSL is not used.
Business Requirements
 A new data source for historical flight information is
being developed by a contractor located on another continent.
 If a time zone is not specified, then it should be
interpreted as Coordinated Universal Time (UTC).
 When you upgrade a service from a staging deployment
to a production deployment, the time that the service is
unavailable must be minimized.
 The default port must be used for HTTP.
Technical Requirements
The existing sources of flight information and the mechanism of exchange are listed below.
 Blue Yonder Airlines provides flight information in an
XML file.
 Consolidated Messenger provides flight information in a
Microsoft Access database that is uploaded every 12 hours to
the service using SFTP. The company uses port 22 for SFTP. Margie’s Travel provides and consumes flight
information using serialized ADO.NET DataSets. Data is
periodically synced between the service and Margie’s Travel.
 Trey Research provides data from multiple sources
serialized in proprietary binary formats. The data must be read
by using .NET assemblies provided by Trey Research. The
assemblies use a common set of dependencies. The current
version of the Trey Research assemblies is 1.2.0.0. All
assemblies provided by Trey Research are signed with a key pair
contained in a file named Trey.snk, which Trey Research also
supplies.
 The application specification requires that any thirdparty assemblies must have strong names.
Application Structure

###EndCaseStudy###

Historical flight information data will be stored in Windows Azure Table Storage using the FlightInfo class
as the table entity.
There are millions of entries in the table. Queries for historical flight information specify a set of airlines
to search and whether the query should return only late flights. Results should be ordered by flight
name.
You need to specify which properties of the FlightInfo class should be used at the partition and row keys
to ensure that query results are returned as quickly as possible.
What should you do? (Each correct answer presents part of the solution. Choose all that apply.)

###BeginCaseStudy###
Topic 1, Flight Information
Background
You are developing a flight information consolidation service. The service retrieves flight information
from a number of sources and combines them into a single data set. The consolidated flight information
is stored in a SQL Server database. Customers can query and retrieve the data by using a REST API
provided by the service.
The service also offers access to historical flight information. The historical flight information can be
filtered and queried in an ad hoc manner.
The service runs on a Windows Azure Web Role. SSL is not used.
Business Requirements
 A new data source for historical flight information is
being developed by a contractor located on another continent.
 If a time zone is not specified, then it should be
interpreted as Coordinated Universal Time (UTC).
 When you upgrade a service from a staging deployment
to a production deployment, the time that the service is
unavailable must be minimized.
 The default port must be used for HTTP.
Technical Requirements
The existing sources of flight information and the mechanism of exchange are listed below.
 Blue Yonder Airlines provides flight information in an
XML file.
 Consolidated Messenger provides flight information in a
Microsoft Access database that is uploaded every 12 hours to
the service using SFTP. The company uses port 22 for SFTP. Margie’s Travel provides and consumes flight
information using serialized ADO.NET DataSets. Data is
periodically synced between the service and Margie’s Travel.
 Trey Research provides data from multiple sources
serialized in proprietary binary formats. The data must be read
by using .NET assemblies provided by Trey Research. The
assemblies use a common set of dependencies. The current
version of the Trey Research assemblies is 1.2.0.0. All
assemblies provided by Trey Research are signed with a key pair
contained in a file named Trey.snk, which Trey Research also
supplies.
 The application specification requires that any thirdparty assemblies must have strong names.
Application Structure

###EndCaseStudy###

Transformed historical flight information provided by the RemoteDataStream() method must be written
to the response stream as a series of XML elements named Flight within a root element named Flights.
Each Flight element has a child element named FlightName that contains the flight name that starts with
the two-letter airline prefix.
You need to implement the StreamHistoricalFlights() method so that it minimizes the amount of
memory allocated.
Which code segment should you use as the body of the StreamHistoricalFlights() method in the
HistoricalDataLoader.es file?

###BeginCaseStudy###
Topic 1, Flight Information
Background
You are developing a flight information consolidation service. The service retrieves flight information
from a number of sources and combines them into a single data set. The consolidated flight information
is stored in a SQL Server database. Customers can query and retrieve the data by using a REST API
provided by the service.
The service also offers access to historical flight information. The historical flight information can be
filtered and queried in an ad hoc manner.
The service runs on a Windows Azure Web Role. SSL is not used.
Business Requirements
 A new data source for historical flight information is
being developed by a contractor located on another continent.
 If a time zone is not specified, then it should be
interpreted as Coordinated Universal Time (UTC).
 When you upgrade a service from a staging deployment
to a production deployment, the time that the service is
unavailable must be minimized.
 The default port must be used for HTTP.
Technical Requirements
The existing sources of flight information and the mechanism of exchange are listed below.
 Blue Yonder Airlines provides flight information in an
XML file.
 Consolidated Messenger provides flight information in a
Microsoft Access database that is uploaded every 12 hours to
the service using SFTP. The company uses port 22 for SFTP. Margie’s Travel provides and consumes flight
information using serialized ADO.NET DataSets. Data is
periodically synced between the service and Margie’s Travel.
 Trey Research provides data from multiple sources
serialized in proprietary binary formats. The data must be read
by using .NET assemblies provided by Trey Research. The
assemblies use a common set of dependencies. The current
version of the Trey Research assemblies is 1.2.0.0. All
assemblies provided by Trey Research are signed with a key pair
contained in a file named Trey.snk, which Trey Research also
supplies.
 The application specification requires that any thirdparty assemblies must have strong names.
Application Structure

###EndCaseStudy###

Errors occasionally occur when saving data using the FlightInfoContext ADO.NET Entity Framework
context. Updates to the data are being lost when an error occurs.
You need to ensure that data is still saved when an error occurs by retrying the operation. No more than
five retries should be performed.
With which code segment should you replace the body of the SaveChanges() method in the
FlightInfoContext.es file?

###BeginCaseStudy###
Topic 2, ASP.NET MVC
Background
You are developing an ASP.NET MVC application in Visual Studio 2012 that will be used to process
orders.
Business Requirements
The application contains the following three pages:
 A page that queries an external database for orders that are ready to be
processed. The user can then process the order.
 A page to view processed orders.
 A page to view vendor information.
The application consumes three WCF services to retrieve external data.
Technical Requirements
Visual Studio Solution:
The solution contains the following four projects.
 ExternalQueue: A WCF service project used to
communicate with the external order database.
 OrderProcessor: An ASP.NET MVC project used for
order processing and logging order metadata.
 OrderUpload: A WCF service project used to submit
order data to an external data source.
 Shipping: A WCF service project used to acquire
shipping information.
ExternalQueue Project:Entity Framework is used for data access. The entities are defined in the ExternalOrders.edmx file as
shown in the following diagram.
The project contains two services defined in the following files.
 IExternalQueueService.es
 ExternalQueueService.svc.
The ExternalQueue.Helpers namespace contains a definition for a class named OrderNotFound
Exception.
OrderProcessor Project:
Entity Framework is used for data access. The entities are defined in the ProcessedOrders.edmx file as
shown in the following diagram.

The classes are contained in the OrderProcessor.Entities namespace. The project contains the following
two controllers.
 InboundQueueController.es
 ProcessedOrderController.esWCF service proxies to the ExternalQueue, Shipping and OrderUpload services have been generated by
using the command prompt. The ExecuteCommandProcedure() method in the ExternalQueueService.svc
file must run asynchronously.
The ProcessedOrderController controller has the following requirements.
The GetVendorPolicy() method must enforce a 10 minute absolute cache expiration policy.
The GetProcessedOrders() method must return a view of the 10 most recently processed orders.
OrderUpload Project:
The project contains two services defined in the following files:

 IUploadCallbackService.es
 UploadCallbackService.svc
Data Access is maintained in a file named UploadOrder.es.
Shipping Project:
Entity Framework is used for data access. The entities are defined in the ExternalOrders.edmx file as
shown in the following diagram.

The Custom Tool property for ExternalOrders.edmx has been removed.
POCO classes for the Entity Model are located in the ShippingAddress.es file. The POCO entity must be
loaded by using lazy loading.
The project contains two services defined in the following files.
 IShippingService.es
 ShippingService.svc.The IShippingService contract must contain an operation that receives an order number as a parameter.
The operation must return a class named ShippingInfo that inherits from a class named State.
Application Structure

###EndCaseStudy###

DRAG DROP
The GetVendorPolicy() private method in the ProcessedOrderController controller is returning a
CacheItemPolicy object with default values. The returned policy must expire if the external file located
at C:\\Triggers\\VendorTrigger.txt has been modified or the timeout outlined in the technical
requirements is reached.
You need to return the policy.
How should you build the method? (To answer, drag the appropriate code segments to the correct
location or locations in the answer area. Each code segment may be used once, more than once, or not
at all. You may need to drag the split bar between panes or scroll to view content.)

###BeginCaseStudy###
Topic 2, ASP.NET MVC
Background
You are developing an ASP.NET MVC application in Visual Studio 2012 that will be used to process
orders.
Business Requirements
The application contains the following three pages:
 A page that queries an external database for orders that are ready to be
processed. The user can then process the order.
 A page to view processed orders.
 A page to view vendor information.
The application consumes three WCF services to retrieve external data.
Technical Requirements
Visual Studio Solution:
The solution contains the following four projects.
 ExternalQueue: A WCF service project used to
communicate with the external order database.
 OrderProcessor: An ASP.NET MVC project used for
order processing and logging order metadata.
 OrderUpload: A WCF service project used to submit
order data to an external data source.
 Shipping: A WCF service project used to acquire
shipping information.
ExternalQueue Project:Entity Framework is used for data access. The entities are defined in the ExternalOrders.edmx file as
shown in the following diagram.
The project contains two services defined in the following files.
 IExternalQueueService.es
 ExternalQueueService.svc.
The ExternalQueue.Helpers namespace contains a definition for a class named OrderNotFound
Exception.
OrderProcessor Project:
Entity Framework is used for data access. The entities are defined in the ProcessedOrders.edmx file as
shown in the following diagram.

The classes are contained in the OrderProcessor.Entities namespace. The project contains the following
two controllers.
 InboundQueueController.es
 ProcessedOrderController.esWCF service proxies to the ExternalQueue, Shipping and OrderUpload services have been generated by
using the command prompt. The ExecuteCommandProcedure() method in the ExternalQueueService.svc
file must run asynchronously.
The ProcessedOrderController controller has the following requirements.
The GetVendorPolicy() method must enforce a 10 minute absolute cache expiration policy.
The GetProcessedOrders() method must return a view of the 10 most recently processed orders.
OrderUpload Project:
The project contains two services defined in the following files:

 IUploadCallbackService.es
 UploadCallbackService.svc
Data Access is maintained in a file named UploadOrder.es.
Shipping Project:
Entity Framework is used for data access. The entities are defined in the ExternalOrders.edmx file as
shown in the following diagram.

The Custom Tool property for ExternalOrders.edmx has been removed.
POCO classes for the Entity Model are located in the ShippingAddress.es file. The POCO entity must be
loaded by using lazy loading.
The project contains two services defined in the following files.
 IShippingService.es
 ShippingService.svc.The IShippingService contract must contain an operation that receives an order number as a parameter.
The operation must return a class named ShippingInfo that inherits from a class named State.
Application Structure

###EndCaseStudy###

The GetExternalOrder() method in the ExternalQueueService service is throwing a runtime error. The
method must query the database for a record that matches the orderNum parameter passed to the
method.
You need to modify the queryString string to retrieve the record.
With which code segment should you replace line EQ64?

###BeginCaseStudy###
Topic 2, ASP.NET MVC
Background
You are developing an ASP.NET MVC application in Visual Studio 2012 that will be used to process
orders.
Business Requirements
The application contains the following three pages:
 A page that queries an external database for orders that are ready to be
processed. The user can then process the order.
 A page to view processed orders.
 A page to view vendor information.
The application consumes three WCF services to retrieve external data.
Technical Requirements
Visual Studio Solution:
The solution contains the following four projects.
 ExternalQueue: A WCF service project used to
communicate with the external order database.
 OrderProcessor: An ASP.NET MVC project used for
order processing and logging order metadata.
 OrderUpload: A WCF service project used to submit
order data to an external data source.
 Shipping: A WCF service project used to acquire
shipping information.
ExternalQueue Project:Entity Framework is used for data access. The entities are defined in the ExternalOrders.edmx file as
shown in the following diagram.
The project contains two services defined in the following files.
 IExternalQueueService.es
 ExternalQueueService.svc.
The ExternalQueue.Helpers namespace contains a definition for a class named OrderNotFound
Exception.
OrderProcessor Project:
Entity Framework is used for data access. The entities are defined in the ProcessedOrders.edmx file as
shown in the following diagram.

The classes are contained in the OrderProcessor.Entities namespace. The project contains the following
two controllers.
 InboundQueueController.es
 ProcessedOrderController.esWCF service proxies to the ExternalQueue, Shipping and OrderUpload services have been generated by
using the command prompt. The ExecuteCommandProcedure() method in the ExternalQueueService.svc
file must run asynchronously.
The ProcessedOrderController controller has the following requirements.
The GetVendorPolicy() method must enforce a 10 minute absolute cache expiration policy.
The GetProcessedOrders() method must return a view of the 10 most recently processed orders.
OrderUpload Project:
The project contains two services defined in the following files:

 IUploadCallbackService.es
 UploadCallbackService.svc
Data Access is maintained in a file named UploadOrder.es.
Shipping Project:
Entity Framework is used for data access. The entities are defined in the ExternalOrders.edmx file as
shown in the following diagram.

The Custom Tool property for ExternalOrders.edmx has been removed.
POCO classes for the Entity Model are located in the ShippingAddress.es file. The POCO entity must be
loaded by using lazy loading.
The project contains two services defined in the following files.
 IShippingService.es
 ShippingService.svc.The IShippingService contract must contain an operation that receives an order number as a parameter.
The operation must return a class named ShippingInfo that inherits from a class named State.
Application Structure

###EndCaseStudy###

DRAG DROP
You add a class named ShippingInfo.
You need to modify the IShippingService interface and the ShippingInfo class to meet the technical
requirements.
What should you do? (To answer, drag the appropriate code segments to the correct location or
locations in the answer area. Each code segment may be used once, more than once, or not at all. You
may need to drag the split bar between panes or scroll to view content.)

###BeginCaseStudy###
Topic 2, ASP.NET MVC
Background
You are developing an ASP.NET MVC application in Visual Studio 2012 that will be used to process
orders.
Business Requirements
The application contains the following three pages:
 A page that queries an external database for orders that are ready to be
processed. The user can then process the order.
 A page to view processed orders.
 A page to view vendor information.
The application consumes three WCF services to retrieve external data.
Technical Requirements
Visual Studio Solution:
The solution contains the following four projects.
 ExternalQueue: A WCF service project used to
communicate with the external order database.
 OrderProcessor: An ASP.NET MVC project used for
order processing and logging order metadata.
 OrderUpload: A WCF service project used to submit
order data to an external data source.
 Shipping: A WCF service project used to acquire
shipping information.
ExternalQueue Project:Entity Framework is used for data access. The entities are defined in the ExternalOrders.edmx file as
shown in the following diagram.
The project contains two services defined in the following files.
 IExternalQueueService.es
 ExternalQueueService.svc.
The ExternalQueue.Helpers namespace contains a definition for a class named OrderNotFound
Exception.
OrderProcessor Project:
Entity Framework is used for data access. The entities are defined in the ProcessedOrders.edmx file as
shown in the following diagram.

The classes are contained in the OrderProcessor.Entities namespace. The project contains the following
two controllers.
 InboundQueueController.es
 ProcessedOrderController.esWCF service proxies to the ExternalQueue, Shipping and OrderUpload services have been generated by
using the command prompt. The ExecuteCommandProcedure() method in the ExternalQueueService.svc
file must run asynchronously.
The ProcessedOrderController controller has the following requirements.
The GetVendorPolicy() method must enforce a 10 minute absolute cache expiration policy.
The GetProcessedOrders() method must return a view of the 10 most recently processed orders.
OrderUpload Project:
The project contains two services defined in the following files:

 IUploadCallbackService.es
 UploadCallbackService.svc
Data Access is maintained in a file named UploadOrder.es.
Shipping Project:
Entity Framework is used for data access. The entities are defined in the ExternalOrders.edmx file as
shown in the following diagram.

The Custom Tool property for ExternalOrders.edmx has been removed.
POCO classes for the Entity Model are located in the ShippingAddress.es file. The POCO entity must be
loaded by using lazy loading.
The project contains two services defined in the following files.
 IShippingService.es
 ShippingService.svc.The IShippingService contract must contain an operation that receives an order number as a parameter.
The operation must return a class named ShippingInfo that inherits from a class named State.
Application Structure

###EndCaseStudy###

DRAG DROP
You need to create the ShippingContext class in the ShippingAddress.es file to meet the requirements.
What should you do? (To answer, drag the appropriate code segments to the correct location or
locations in the answer area. Each code segment may be used once, more than once, or not at all. You
may need to drag the split bar between panes or scroll to view content.)