Exam 70-487 Developing Microsoft Azure and Web Services

Published: October 17, 2012
Languages: English, Chinese (Simplified), French, German, Japanese, Portuguese (Brazil)
Audiences: Developers
Technology: Microsoft Visual Studio 2013, Microsoft Azure
Credit toward certification: MCP, MCSD

Skills measured
This exam measures your ability to accomplish the technical tasks listed below. The percentages indicate the relative weight of each major topic area on the exam. The higher the percentage, the more questions you are likely to see on that content area on the exam. View video tutorials about the variety of question types on Microsoft exams.

Please note that the questions may test on, but will not be limited to, the topics described in the bulleted text.

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Starting April 30, 2014, the questions on this exam include content covering Visual Studio 2013 and updates to Microsoft Azure.

Accessing data (20-25%)
Choose data access technologies
Choose a technology (ADO.NET, Entity Framework, WCF Data Services, Azure storage) based on application requirements
Implement caching
Cache static data, apply cache policy (including expirations); use CacheDependency to refresh cache data; query notifications
Implement transactions
Manage transactions by using the API from System.Transactions namespace; implement distributed transactions; specify transaction isolation level
Implement data storage in Azure
Access data storage in Azure; choose data storage mechanism in Azure (blobs, tables, queues, SQL Database); distribute data by using the Content delivery network (CDN); handle exceptions by using retries (SQL Database); manage Azure Caching
Create and implement a WCF Data Services service
Address resources; implement filtering; create a query expression; access payload formats (including JSON); use data service interceptors and service operators
Manipulate XML data structures
Read filter, create, modify XML data structures; Manipulate XML data by using XMLReader, XMLWriter, XMLDocument, XPath, LINQ to XML; transform XML by using XSLT transformations

Preparation resources
Transaction isolation levels
WCF Data Services
XML documents and data

Querying and manipulating data by using Entity Framework (20-25%)
Query and manipulate data by using the Entity Framework
Query, update, and delete data by using DbContext; build a query that uses deferred execution; implement lazy loading and eager loading; create and run compiled queries; query data by using Entity SQL; perform asynchronous operations using Entity Framework; map a stored procedure
Query and manipulate data by using Data Provider for Entity Framework
Query and manipulate data by using Connection, DataReader, and Command from the System.Data.EntityClient namespace; perform synchronous and asynchronous operations; manage transactions (API); programmatically configure a Data Provider
Query data by using LINQ to Entities
Query data by using LINQ operators (for example, project, skip, aggregate, filter, and join); log queries and database commands; implement query boundaries (IQueryable vs. IEnumerable); implement async query
Query and manipulate data by using ADO.NET
Query and manipulate data by using Connection, DataReader, Command, DataAdapter, DataSet; perform synchronous and asynchronous operations; manage transactions (API)
Create an Entity Framework data model
Structure the data model using table per type, table per class, table per hierarchy; choose and implement an approach to manage a data model (code first vs. model first vs. database first); implement POCO objects; describe a data model by using conceptual schema definitions, storage schema definition, mapping language (CSDL, SSDL, MSL), and Custom Code First Conventions

Preparation resources
Entity Framework
Loading related entities
IQueryable<T> Interface

Designing and implementing WCF Services (15-20%)
Create a WCF service
Create contracts (service, data, message, callback, and fault); implement message inspectors; implement asynchronous operations in the service
Configure WCF services by using configuration settings
Configure service behaviors; configure service endpoints; configure bindings including WebSocket bindings; specify a service contract; expose service metadata (XSDs, WSDL, and metadata exchange endpoint); configure message compression and encoding
Configure WCF services by using the API
Configure service behaviors; configure service endpoints; configure binding; specify a service contract; expose service metadata (XSDs, WSDL, and metadata exchange); WCF routing and discovery features
Secure a WCF service
Implement message level security, implement transport level security; implement certificates; design and implement multiple authentication modes
Consume WCF services
Generate proxies by using SvcUtil; generate proxies by creating a service reference; create and implement channel factories
Version a WCF service
Version different types of contracts (message, service, data); configure address, binding, and routing service versioning
Create and configure a WCF service on Azure
Create and configure bindings for WCF services (Azure SDK—extensions to WCF); relay bindings to Azure using service bus endpoints; integrate with the Azure service bus relay
Implement messaging patterns
Implement one way, request/reply, streaming, and duplex communication; implement Azure Service Bus and Azure Queues
Host and manage services
Manage services concurrency (single, multiple, reentrant); create service hosts; choose a hosting mechanism; choose an instancing mode (per call, per session, singleton); activate and manage a service by using AppFabric; implement transactional services; host services in an Azure worker role

Preparation resources
Windows Communication Foundation Services and WCF Data Services in Visual Studio
<bindings>
Forward-Compatible data contracts

Creating and consuming Web API-based services (15-20%)
Design a Web API
Define HTTP resources with HTTP actions; plan appropriate URI space, and map URI space using routing; choose appropriate HTTP method (get, put, post, delete) to meet requirements; choose appropriate format (Web API formats) for responses to meet requirements; plan when to make HTTP actions asynchronous; design and implement routes
Implement a Web API
Accept data in JSON format (in JavaScript, in an AJAX callback); use content negotiation to deliver different data formats to clients; define actions and parameters to handle data binding; use HttpMessageHandler to process client requests and server responses; implement dependency injection, along with the dependency resolver, to create more flexible applications; implement action filters and exception filters to manage controller execution; implement asynchronous and synchronous actions; implement streaming actions; implement SignalR; test Web API web services
Secure a Web API
Implement HTTPBasic authentication over SSL; implement Windows Auth; prevent cross-site request forgery (XSRF); design, implement, and extend authorization and authentication filters to control access to the application; implement Cross Origin Request Sharing (CORS); implement SSO by using OAuth 2.0; configure multiple authentication modes on a single endpoint
Host and manage Web API
Host Web API in an ASP.NET app; self-host a Web API in your own process (a Windows service) including Open Web Interface for .NET (OWIN); host services in an Azure worker role; restrict message size; configure the host server for streaming
Consume Web API web services
Consume Web API services by using HttpClient synchronously and asynchronously; send and receive requests in different formats (JSON/HTML/etc.); request batching

Preparation resources
Getting started with ASP.NET Web API 2 (C#)
Implementing Basic CRUD functionality with the Entity Framework in ASP.NET MVC application
Json class

Deploying web applications and services (15-20%)
Design a deployment strategy
Create an IIS install package; deploy to web farms; deploy a web application by using XCopy; automate a deployment from TFS or Build Server
Choose a deployment strategy for an Azure web application
Perform an in-place upgrade and VIP swap; configure an upgrade domain; create and configure input and internal endpoints; specify operating system configuration; deploy applications using Azure Web Site
Configure a web application for deployment
Switch from production/release mode to debug mode; use SetParameters to set up an IIS app pool; set permissions and passwords; enable and monitor ASP.NET App Suspend; configure WCF endpoints (including HTTPS protocol mapping), bindings, and behaviors; transform web.config by using XSLT (for example, across development, test, and production/release environments); configure Azure configuration settings
Manage packages by using NuGet
Create and configure a NuGet package; install and update an existing NuGet package; connect to a local repository cache for NuGet, set up your own package repository
Create, configure, and publish a web package
Create an IIS InstallPackage; configure the build process to output a web package; apply pre- and post- condition actions to ensure that transformations are correctly applied; include appropriate assets (web content, certificates)
Share assemblies between multiple applications and servers
Prepare the environment for use of assemblies across multiple servers (interning); sign assemblies by using a strong name; deploy assemblies to the global assembly cache; implement assembly versioning; create an assembly manifest; configure assembly binding redirects (for example, from MVC4 to MVC5)

Preparation resources
ASP.NET Web Deployment using Visual Studio: Introduction
How to: Create a Web Deployment Package in Visual Studio
Installing NuGet

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QUESTION 1
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

Answer: D

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QUESTION 2
You need to load flight information provided by Consolidated Messenger.
Which should you use?

A. SQL Server Data Transformation Services (DTS)
B. EntityTransaction and EntityCommand
C. Office Open XML
D. OleDbConnection and OleDbDataReader

Answer: D

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QUESTION 3
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.

Answer: D

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QUESTION 4
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.)

A. Use the WasLate property as the row key.
B. Use the Airline property as the row key.
C. Use the WasLate property as the partition key
D. Use the Arrival property as the row key.
E. Use the Airline property as the partition key.
F. Use the Flight property as the row key.

Answer: B,F

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