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Share some MCSD 70-486 exam questions and answers below.
Topic 2, Web Application 

Background 
You are developing an online shopping web application. 

Business Requirements 
• A user is not required to provide an email address. If a user enters an email address, it must be verified to be a valid email address. 
• Information about the first product on the product page must fade out over time to encourage the user to continue browsing the catalog. 
• Administrators must be able to edit information about existing customers. 
• Administrators also must be able to specify a default product on the product page. 

Technical Requirements 
General: 
• The web store application is in a load-balanced web farm. The load balancer is not configured to use server affinity. 
• The web store application is an ASP.NET MVC application written in Visual Studio 2012. 

Products: 
• The value of the productId property must always be greater than 0. 
• The Products page for mobile devices must display to mobile users. The Products page for desktop devices must display to desktop users. 

Storage: 
• The data must be stored in a serialized XML data format. 
• Serialized objects must be schema-independent. 

Exception handling: 
• Exceptions originating from IIS must display a page with support contact information. 
• Some page links expire, and users who access these links encounter 404 errors. 
• Exceptions must be logged by using the WriteLog method of the Utility class. 

Browser and device support: 
• The application must support image format conversions from .bmp to .jpeg for mobile devices. 
• The application must support image format conversions from .bmp to .png for desktop devices. 

Application Structure 












You need to ensure that new customers enter a valid email address. 
Which code should you use? (Each correct answer presents part of the solution. Choose all that apply.) 



A. Option A 
B. Option B 
C. Option C 
D. Option D 
Answer: A, D

You are designing a Windows Communication Foundation (WCF) service that uses the Product class. 
You need to update the class to meet the storage requirement. 
What should you do? (Each correct answer presents part of the solution. Choose all that apply.) 
A. Mark the Product class with the DataContract attribute. 
B. Mark the public members of the Product class with the DataContractFormat attribute. 
C. Mark the Product class with the CollectionDataContract attribute. 
D. Mark the public members of the Product class with the DataMember attribute. 
Answer: A, D 


You are developing an ASP.NET MVC application that uses forms authentication to verify that the user is logged in. Authentication credentials must be encrypted and secure so no user identity is exposed. You need to ensure that user credentials are persisted after users log on.Where should you store the credentials? (Each correct answer presents a complete solution. Choose all that apply.) 
A. In Session on the server 
B. In a cookie stored in the browser 
C. In ViewData in the application 
D. In TempData on the server 
Answer: A, B

You are developing an ASP.NET MVC application that uses forms authentication. The application uses SQL queries that display customer order data. Logs show there have been several malicious attacks against the servers. You need to prevent all SQL injection attacks from malicious users against the application.How should you secure the queries? 
A. Check the input against patterns seen in the logs and other records. 
B. Escape single quotes and apostrophes on all string-based input parameters. 
C. Implement parameterization of all input strings. 
D. Filter out prohibited words in the input submitted by the users. 
Answer: C 


You are designing an enterprise-level Windows Communication Foundation (WCF) application. User accounts will migrate from the existing system. The new system must be able to scale to accommodate the increasing load. The new servers are experiencing significant stress under load of large-scale role changes. You need to ensure that the application can handle the stress.Which authorizations should you redesign? (Each correct answer presents a complete solution. Choose all that apply.) 
A. Role-based approach 
B. Identity-based approach 
C. Resource-based trusted subsystem model 
D. Resource-based impersonation/delegation model 
Answer: AC

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