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New Microsoft 70-486 Exam Dumps Collection (Question 6 - Question 15)
New Questions 6
You are developing an ASP.NET MVC application that uses forms authentication. The application uses SQL queries that display customer order data.
You need to prevent all SQL injection attacks against the application. How should you secure the queries?
A. Implement parameterization.
B. Pattern check the input.
C. Filter out prohibited words in the input.
D. Escape single quotes on string-based input parameters.
Answer: A
Explanation:
With most development platforms, parameterized statements that work with parameters can be used (sometimes called placeholders or bind variables) instead of embedding user input in the statement. A placeholder can only store a value of the given type and not an arbitrary SQL fragment. Hence the SQL injection would simply be treated as a strange (and probably invalid) parameter value.
New Questions 7
You are designing a distributed banking application that handles multiple customers. A user may log on to the site to perform activities such as checking balances, performing transactions, and other activities that must be done securely.
The application must store secure information that is specific to an individual user. The data must be automatically and securely purged when the user logs off.
You need to save transient information in a secure data store. Which data store should you use?
A. NET session state
B. NET profile properties
C. NET application state
D. Shared database
Answer: A
New Questions 8
You are developing an ASP.NET MVC application that displays stock market information. The stock market information updates frequently and must be displayed in real-time.
You need to eliminate unnecessary header data, minimize latency, and transmit data over a full-duplex connection.
What should you do?
A. Implement long-running HTTP requests.
B. Instantiate a MessageChannel object on the client.
C. Implement WebSockets protocol on the client and the server.
D. Configure polling from the browser.
Answer: C
New Questions 9
You create an ASP.NET MVC application. You host the application by using the Open Web
Interface for .NET (OWIN). You run the following command by using the NuGet Package Manager console:
install-package Microsoft.AspNet.SignalR
You plan to implement real-time push notifications from the server using ASP.NET SignalR. You need to complete the ASP.NET SignalR implementation.
Which three steps should you perform? Each correct answer presents part of the solution.
A. Create a hub class to push content to clients.
B. Create a class that derives from the PersistentConnection class. Use the derived class to push content to clients.
C. Use the SignalR jQuery library in a web page to send messages to the hub and display updates from the hub.
D. Map a SignalR hub to the app builder pipeline by using an OWIN startup class.
E. Start the SignalR hub asynchronously and respond to the appropriate callback methods.
Answer: A,C,D
Explanation:
A: In Solution Explorer, right-click the project, select Add | New Folder, and add a new folder named Hubs.
Right-click the Hubs folder, click Add | New Item, select the Visual C# | Web | SignalR node in the Installed pane, select SignalR Hub Class (v2) from the center pane, and create a new hub named ChatHub.cs. You will use this class as a SignalR server hub that sends messages to all clients.
C: Use the SignalR jQuery library in a web page to send messages and display updates from the hub.
D: Create an OWIN startup class to configure the application.
References: https://www.asp.net/signalr/overview/getting-started/tutorial-getting-started-with-signalr-and-mvc
New Questions 10
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.
You need to ensure that the application can handle large-scale role changes.
What should you use for authorization? (Each correct answer presents a complete solution. Choose all that apply.)
A. Resource-based trusted subsystem model
B. Identity-based approach
C. Role-based approach
D. Resource-based impersonation/delegation model
Answer: B,C
Explanation:
Advanced Maturity: Authorization as a Service
In the advanced level of maturity for authorization, role storage and management is consolidated and authorization itself is a service available to any solution that is service- enabled.
* The Trusted Subsystems Model
Once authorization is available as an autonomous service, the need for impersonation is eliminated. Instead of assuming the identity of the user, the application uses its own credentials to access services and resources, but it captures the user's identity and passes it as a parameter (or token) to be used for authorization when a request is made. This model is referred to as the trusted subsystem model, because the application acts as a trusted subsystem within the security domain.
New Questions 11
You need to implement the requirements for handling IIS errors. What should you do?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
Topic 3, Video Transcoding ServiceBackground
You are developing a video transcoding service. This service is used by customers to upload video files, convert video to other formats, and view the converted files. This service is used by customers all over the world.
Business Requirements
The user-facing portion of the application is an ASP.NET MVC application. It provides an interface for administrators to upload video and schedule transcoding. It also enables administrators and users to download the transcoded videos.
When videos are uploaded, they are populated with metadata used to identify the video. The video metadata is gathered by only one system when the video upload is complete.
Customers require support for Microsoft Internet Explorer 7 and later. The application contains a header that is visible on every page.
If the logged-on user is an administrator, then the header will contain links to administrative functions. This information is read from a cookie that is set on the server. The administrative links must not be present if an error condition is present.
Technical Requirements User Experience:
u2711 The front-end web application enables a user to view a list of videos.
u2711 The main view of the application is the web page that displays the list of videos.
u2711 HTML elements other than the list of videos are changed with every request requiring the page to reload.
Compatibility:
u2711 Some customers use browsers that do not support the HTTP DELETE verb.
u2711 These browsers send a POST request with an HTTP header of X-Delete when the intended action is to delete.
Transcoding:
u2711 The video transcoding occurs on a set of Windows Azure worker roles.
u2711 The transcoding is performed by a third-party command line tool named transcode.exe. When the tool is installed, an Environment variable named transcode contains the path to the utility.
u2711 A variable named license contains the license key. The license for the transcoding utility requires that it be unregistered when it is not in use.
u2711 The transcoding utility requires a significant amount of resources. A maximum of 10 instances of the utility can be running at any one time. If an instance of the role cannot process an additional video, it must not prevent any other roles from processing that video.
u2711 The utility logs errors to a Logs directory under the utilities path.
u2711 A local Azure directory resource named perf is used to capture performance data.
Development:
u2711 Developers must use Microsoft Remote Desktop Protocol (RDP) to view errors generated by the transcode.exe utility.
u2711 An x509 certificate has been created and distributed to the developers for this purpose.
u2711 Developers must be able to use only RDP and not any other administrative
functions.
Application Structure
New Questions 12
You are developing an ASP.NET MVC application.
The application has a contact view includes a form for editing the displayed contact. You need to save the Contact object model when the form is posted back to the
EditContact method using a POST method request.
Which code segment should you use? Each correct answer presents a complete solution. Choose all that apply.
A. public ActionResult EditContact(){var c = newContact(){FirstName = Request.QueryString['"FirstName"'],LastName = Request.QueryString["LastName"]},SaveContact(c);return View(c);}
B. public ActionResult EditContact(Contact c){SaveContact(c);return View(c);}
C. public ActionResult EditContact(FormCollection values){var c = newContact(){FirstName
= values['"FirstName"'],LastName = values["LastName"]},SaveContact(c);return View(c);}
D. public ActionResult EditContact(QueryStringProvider values){var c = newContact(){FirstName = values.GetValue['"FirstName"'],LastName = values.GetValue ["LastName"]},SaveContact(c);return View(c);}
Answer: A,B
New Questions 13
You are designing an HTML5 website.
You need to design the interface such that the content is viewable in all types of browsers, including screen readers.
What should you do? (Each correct answer presents a complete solution. Choose all that apply.)
A. Ensure that content elements have valid and descriptive names.
B. Use Resource Description Framework (RDF) to describe content elements.
C. Convert HTML forms to XForms.
D. Use HTML5 semantic markup elements.
E. Annotate content elements with Accessible Rich Internet Application (ARIA) attributes.
Answer: D,E
New Questions 14
You need to ensure that all the MVC controllers are secure.
Which code segment should you use as the body for the CreateController method in AdminVerifierFactory.es?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: C
New Questions 15
You deploy an ASP.NET MVC Web application to Internet Information Services (IIS). The application has a secure area that provides access to custom reports.
You must develop custom business logic to support the reports. The custom business logic has the following requirements:
You must be able to quickly modify and deploy updates to the business logic. You need to develop the custom business logic.
What should you do?
A. Update the report logic to include the custom business logic. Use WebDAV to publish the reports to the server.
B. Develop a new HTTP module that includes the custom business logic. Deploy the HTTP module to IIS.
C. Develop a new HTTP handler that includes the custom business logic. Deploy the HTTP handler to IIS.
D. Develop a new ISAPI filter that includes the custom business logic. Deploy the ISAPI filter to IIS.
Answer: C
Explanation:
An ASP.NET HTTP handler is the process that runs in response to a request that is made to an ASP.NET Web application.
ASP.NET maps HTTP requests to HTTP handlers based on a file name extension.
Incorrect:
Not B: HTTP modules differ from HTTP handlers. An HTTP handler returns a response to a request that is identified by a file name extension or family of file name extensions. In contrast, an HTTP module is invoked for all requests and responses. It subscribes to event notifications in the request pipeline and lets you run code in registered event handlers.
References: https://msdn.microsoft.com/en-us/library/bb398986.aspx
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