Latest MCSD 70-487 Dumps Real Exam Download Case Study: 1

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Case Study: 1

Scenario 1

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 third-party assemblies must have strong names.

Application Structure

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QUESTION 1

DRAG DROP

You need to configure the Windows Azure service definition to enable Consolidated Messenger to upload files. What should you do? (To answer, drag the appropriate configuration items to the correct location or locations. Each configuration item 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.)

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Correct Answer:  

“InputEndpoint”, “http”, “80”

“InputEndpoint”, “tcp”, “22”

Credits to Rem

 

 

QUESTION 2

You need to recommend a data access technology to the contractor to retrieve data from the new data source. Which data access technology should you recommend?

 

A. LINQ to XML

B. ADO.NET Entity Framework

C. ADO.NET DataSets

D. WCF Data Services

 

Correct Answer: D 

 

 

QUESTION 4

DRAG DROP

Flight information data provided by Margie’s Travel is updated both locally and remotely. When the data is synced, all changes need to be merged together without causing any data loss or corruption. You need to implement the Sync() method in the MargiesTravelSync.es file. 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.)

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Correct Answer:  

XmlWriteMode.DiffGram and XmlReadMode.DiffGram

 

 

QUESTION 4

DRAG DROP

The service has been deployed to Windows Azure. Trey Research has provided version 1.3.0.0 of the assembly to support a change in the serialization format. The service must remain available during the transition to the new serialization format. You need to ensure that the service is using the new assembly. Which configuration setting should you add to the web.config? (To answer, drag the appropriate configuration elements to the correct location or locations in the answer area. Each configuration element 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.)

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Correct Answer:  

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QUESTION 5

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. Which code segment should you use as the body of the SaveChanges() method in the FlightInfoContext.es file?

 

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B. clip_image024

C. clip_image026

D. clip_image028

 

A. Option A

B. Option B

C. Option C

D. Option D

 

Correct Answer: A 

 

 

QUESTION 6

Data provided by Consolidated Messenger is cached in the HttpContext.Cache object. You need to ensure that the cache is correctly updated when new data arrives. What should you do?

 

A. Ensure that the EffectivePrivateBytesLimit value is greater than the size of the database file.

B. Change the sliding expiration of the cache item to 12 hours.

C. Use the SqlCacheDependency type configured with a connection string to the database file.

D. Use the CacheDependency type configured to monitor the SFTP target folder.

 

Correct Answer: D  

 

 

QUESTION 7

DRAG DROP

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

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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.)

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Correct Answer:  

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