70-486 Exam
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New Microsoft 70-486 Exam Dumps Collection (Question 2 - Question 11)
Q2. You are developing an ASP.NET MVC application. The application is deployed in a web farm and is accessed by many users.
The application must handle web server failures gracefully. The servers in the farm must share the short-term state information.
You need to persist the application state during the session. What should you implement?
A. ASP.NET session state
B. A local database
C. A state server
D. Profile properties
Answer: C
Explanation:
ASP.NET session state service provides a somewhat slower service than the in-process variant as we need to make calls to a remote server. All session data is stored in memory so shutting down the state machine will wipe out all session data as well.
References: https://dotnetcodr.com/2013/07/01/web-farms-in-net-and-iis-part-5-session-state-management/
Q3. You are developing an ASP.NET MVC application.
The application must allow users to enter HTML in a feedback text box only. You need to disable request validation.
What should you do?
A. Use the HttpRequest.Form property to read the unvalidated form value.
B. Apply and set the Validatelnput attribute on the controller action to FALSE.
C. Use the HttpRequest.Unvalidated property to read the unvalidated form value.
D. Apply and set the CausesValidation attribute on the controller action to FALSE.
Answer: C
Explanation:
The HttpRequest.Unvalidated Property provides access to HTTP request values without triggering request validation.
Q4. 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
Explanation:
SQL Injection Prevention, Defense Option 1: Prepared Statements (Parameterized Queries)
The use of prepared statements (aka parameterized queries) is how all developers should first be taught how to write database queries. They are simple to write, and easier to understand than dynamic queries. Parameterized queries force the developer to first define all the SQL code, and then pass in each parameter to the query later. This coding style allows the database to distinguish between code and data, regardless of what user input is supplied.
Prepared statements ensure that an attacker is not able to change the intent of a query, even if SQL commands are inserted by an attacker.
Q5. You are creating a new authentication system that uses an HTTP header value. The existing authentication system must continue to operate normally.
You need to implement the custom authentication.
What should you do? (Each correct answer presents a complete solution. Choose all that apply.)
A. Create a class derived from ActionResult and check for a valid HTTP header value in the ExecuteResult method. Change all actions to return this new class.
B. Create an HttpHandler to check for a valid HTTP header value in the ProcessRequest method.
C. Create an HttpModule and check for a valid HTTP header value in the AuthenticateRequest event.
D. Create a class derived from AuthorizeAttribute and check for a valid HTTP header value in the AuthorizeCore method. Change usages of the existing AuthorizeAttribute to use the new class.
Answer: C,D
Q6. You are designing an HTML5 website.
You need to design the interface to make the content of the web page viewable in all types of browsers, including voice recognition software, screen readers, and reading pens.
What should you do? (Each correct answer presents a complete solution. Choose all that apply.)
A. Annotate HTML5 content elements with Accessible Rich Internet Application (ARIA) attributes.
B. Convert HTML5 forms to XForms.
C. Ensure that HTML5 content elements have valid and descriptive names.
D. Use HTML5 semantic markup elements to enhance the pages.
E. Use Resource Description Framework (RDF) to describe content elements throughout the entire page.
Answer: A,C,D
Explanation:
A: The aria-describedby property may be used to attach descriptive information to one or more elements through the use of an id reference list. The id reference list contains one or more unique element ids.
References: https://www.w3.org/TR/WCAG20-TECHS/ARIA1.html
Q7. You develop an ASP.NET MVC application. The application is configured for claims-based authentication by using Windows Identity Foundation (WIF).
You need to access the claims in the WIF token. Which code segment should you use?
A. Thread.CurrentPrincipal.Identity;
B. ((IClaimsPrincipal)Thread.CurrentPrincipal).Identities[0].Claims;
C. Thread.CurrentPrincipal;
D. ((IClaimsPrincipal)Thread.CurrentPrincipal).Identities[0].IsAuthenticated;
Answer: B
Explanation:
To Access the Claims
In order to access identity related information, you can run FedUtil. Once you have run FedUtil, your application can access IClaimsPrincipal and IClaimsIdentity using the standard ASP.NET constructs as shown in the following code example:
void Page_Load(object sender, EventArgs e)
{
// Cast the Thread.CurrentPrincipal
IClaimsPrincipal icp = Thread.CurrentPrincipal as IClaimsPrincipal;
// Access IClaimsIdentity which contains claims IClaimsIdentity claimsIdentity = (IClaimsIdentity)icp.Identity;
// Access claims
foreach(Claim claim in claimsIdentity.Claims)
{
}
}
References: https://msdn.microsoft.com/en-us/library/ee517271.aspx
Q8. You need to configure session storage in the web.config file to meet the technical requirements for scalability.
Which SessionState mode should you use? (Each correct answer presents a complete solution. Choose all that apply.)
A. StateServer
B. InProc
C. AutoDetect
D. SqlServer
Answer: A,D
Q9. 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.cs?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: C
Q10. You are developing an ASP.NET MVC application that enables you to edit and save a student object.
The application must not retrieve student objects on an HTTP POST request. You need to implement the controller.
Which code segment should you use? (Each correct answer presents a complete solution. Choose all that apply.)
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A,C
Q11. You are developing an application that uses many small images for various aspects of the interface.
The application responds slowly when additional resources are being accessed. You need to improve the performance of the application.
What should you do?
A. Preload all the images when the client connects to ensure that the images are cached.
B. Combine all the images into a single image and use CSS to create sprites.
C. Host all images on an alternate server and provide a CDN.
D. Convert the images to .png file format and stream all images on a single connection.
Answer: C
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