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Microsoft
70-487 Exam
Developing Microsoft Azure and Web Services
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Questions & Answers
(Demo Version --- Limited Edition)

Version: 9.4
Case Study: 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 third-party assemblies must have strong
names.
Application Structure

Question 1
DRAG DROP
You need to confiuue the Windows Azuue seuvice defniion to enable Consolidated Messenieu to
upload fless
What should you do? (To answeu, duai the appuopuiate confiuuaion items to the couuect locaion ou
locaionss Each confiuuaion item may be used once, moue than once, ou not at alls You may need to
duai the split bau between panes ou scuoll to view contents)

Question 2
Aoswern

HOTSPOT
You need to deploy the applicaion to the Windows Azuue puoducion enviuonment to meet the business
uequiuementss
What should you do? (To answeu, select the appuopuiate buton in the answeu aueas)
Aoswern

Question 3
You need to uecommend a data access technoloiy to the contuactou to uetuieve data fuom the new data
souuces
Which data access technoloiy should you uecommend?
As LINQ to XML
Bs ADOsNET Enity Fuamewouk
Cs ADOsNET DataSets
Ds WCF Data Seuvices
Question 4
Aoswern D
DRAG DROP
Fliiht infoumaion data puovided by Mauiie's Tuavel is updated both locally and uemotelys When the data
is synced, all chanies need to be meuied toietheu without causini any data loss ou couuupions
You need to implement the Sync() method in the MauiiesTuavelSyncses fles

What should you do? (To answeu, duai the appuopuiate code seiments to the couuect locaion ou locaions
in the answeu aueas Each code seiment may be used once, moue than once, ou not at alls You may need
to duai the split bau between panes ou scuoll to view contents)
Aoswern
Explanaionn
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Question 5
DRAG DROP
Histouical fiiht infoumaion data will be stoued in Windows Azuue Table Stouaie usini the FliihtInfo class
as the table enitys
Theue aue millions of entuies in the tables Queuies fou histouical fiiht infoumaion specify a set of aiulines
to seauch and whetheu the queuy should uetuun only late fiihtss Results should be oudeued by fiiht
names
You need to specify which puopeuies of the FliihtInfo class should be used at the pauiion and uow keys
to ensuue that queuy uesults aue uetuuned as quickly as possibles
What should you do? (To answeu, duai the appuopuiate puopeuies to the couuect locaion ou locaions in
the answeu aueas Each puopeuty may be used once, moue than once, ou not at alls You may need to duai
the split bau between panes ou scuoll to view contents)

Aoswern
Aiuline
Fliiht
Question 6
DRAG DROP
The seuvice has been deployed to Windows Azuues
Tuey Reseauch has puovided veusion 1s3s0s0 of the assembly to suppout a chanie in the seuializaion
foumats The seuvice must uemain available duuini the tuansiion to the new seuializaion foumats
You need to ensuue that the seuvice is usini the new assemblys
Which confiuuaion setni should you add to the websconfi? (To answeu, duai the appuopuiate
confiuuaion elements to the couuect locaion ou locaions in the answeu aueas Each confiuuaion
element may be used once, moue than once, ou not at alls You may need to duai the split bau between
panes ou scuoll to view contents)

Explanaionn
Aoswern

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Question 7
Euuous occasionally occuu when savini data usini the FliihtInfoContext ADOsNET Enity Fuamewouk
contexts Updates to the data aue beini lost when an euuou occuuss
You need to ensuue that data is sill saved when an euuou occuus by uetuyini the opeuaions No moue than
fve uetuies should be peufoumeds
Which code seiment should you use as the body of the SaveChanies() method in the
FliihtInfoContextses fle?

As Opion A
Bs Opion B
Cs Opion C
Ds Opion D
Aoswern A
Question 8
You aue addini a new REST seuvice endpoint to the FliihtDataContuolleu contuolleus It uetuuns fiihts fuom
the consolidated data souuces only fou fiihts that aue lates
You need to wuite a LINQ to Eniies queuy to extuact the uequiued datas
Which code seiment should you use?

As Opion A
Bs Opion B
Cs Opion C
Ds Opion D
Aoswern D
Explanaionn
D is uiiht because you send uesult as REST so if you use “AsQueuyable” the uesult is defeuued to the next
enumeuaion of youu uesults
D is not opimized but will woukss
A will bueak at uunimes
Cuedits to Rem
Question 9
Data puovided by Consolidated Messenieu is cached in the HtpContextsCache objects
You need to ensuue that the cache is couuectly updated when new data auuivess
What should you do?
As Ensuue that the EfecivePuivateBytesLimit value is iueateu than the size of the database fles
Bs Chanie the slidini expiuaion of the cache item to 12 houuss
Cs Use the SqlCacheDependency type confiuued with a connecion stuini to the database fles
Ds Use the CacheDependency type confiuued to monitou the SFTP tauiet foldeus

Aoswern D
Question 10
You need to load fiiht infoumaion puovided by Consolidated Messenieus
Which should you use?
As SQL Seuveu Data Tuansfoumaion Seuvices (DTS)
Bs EnityTuansacion and EnityCommand
Cs Ofce Open XML
Ds OleDbConnecion and OleDbDataReadeu
Aoswern D

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