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NEW QUESTION 277
You are developing an ASP.NET Core MVC web application. The application must be exposed to external users over ports 80 and 443 and must meet the following requirements:
– Handle more than 1024 simultaneous connections
– Support Windows authentication
– Support HTTP/2 over TLS
– Include response caching
– Protect against denial-of-service attacks
You need to deploy the application to an on-premises web server.
Solution: You deploy the application to HTTP.sys.
Does the solution meet the goal?
A. Yes
B. No
Answer: A
Explanation:
https://docs.microsoft.com/en-us/aspnet/core/fundamentals/servers/httpsys?view=aspnetcore-2.1
NEW QUESTION 278
You are developing an ASP.NET Core MVC web application. The landing page of the application contains over 100 small JPEG images, including many images that have embedded text. Mobile device users report performance issues when loading the landing page. You debug the application and determine that the number of HTTP requests is causing the issue. You need to improve the performance of the landing page.
Solution: Update the web server to use HTTP/2.
Does the solution meet the goal?
A. Yes
B. No
Answer: B
NEW QUESTION 279
You are developing a NuGet package that will be used by applications that target multiple .NET runtime environments. You need to include NuGet package references within application project files. What should you use?
A. a PackageReference node
B. the packages.config file
C. the .nupkg folder name
D. the project.json file
Answer: A
Explanation:
https://docs.microsoft.com/en-us/nuget/consume-packages/package-references-in-project-files
NEW QUESTION 280
You are designing an ASP.NET Core MVC application. You need to combine two existing models to create a view. Which MVC component should you use?
A. ViewComponent
B. View
C. Controller
D. Model
Answer: B
Explanation:
https://docs.microsoft.com/en-us/aspnet/core/tutorials/first-mvc-app/adding-controller?view=aspnetcore-2.1
NEW QUESTION 281
You are developing an ASP.NET MVC application by using Microsoft Visual Studio Professional. You plan to deploy the app to a Microsoft Azure App Services Web App. You must be able to edit files in the web application directly without having to redeploy or use other means of connecting to the web application. You need to update the Web.config file to enable remote error messages. What should you do?
A. Download the publishsettings file from Azure portal.
Create an FTP connection to the Azure Web App and update the file.
B. Use Visual Studio to remotely debug and update the file.
C. Create a Web.config transform and deploy a debug build.
D. Use the Visual Studio Server Explorer remote view feature to update the file.
Answer: B
NEW QUESTION 282
You develop a new ASP.NET MVC application. You use local storage to maintain state. The localStorage object’s setItem method is failing to store a value. Which two scenarios will cause the failure? (Each correct answer presents a complete solution. Choose two.)
A. The user has disabled local storage in the browser.
B. The value being stored is a JavaScript array.
C. The new Value property was used prior to calling the setItem method.
D. The value being stored exceeds 10 MB in size.
Answer: BC
Explanation:
https://www.w3schools.com/html/html5_webstorage.asp
https://html.spec.whatwg.org/multipage/webstorage.html#dom-storage-setitem
NEW QUESTION 283
You are developing an ASP.NET MVC application. The application uses a SQL Server database and a SQL Server login and password. You need to ensure that the password for the SQL Server login is not stored in plain text. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Encrypt the connection string by using aspnet_wp.exe.
B. Encrypt the connection string by using aspnet_regiis.exe.
C. Ensure that there is a valid encryptionKey element in the web.config file.
D. Ensure that there is a valid machineKey element in the web.config file.
Answer: BD
Explanation:
https://weblogs.asp.net/owscott/421063
NEW QUESTION 284
Hotspot
You are developing an ASP.NET Core Web API. API methods must use JSON Web Tokens (JWT) to authenticate the method caller. You need to implement JWT authentication. How should you complete the code? (To answer, select the appropriate options in the answer area.)
Answer:
Explanation:
https://www.c-sharpcorner.com/article/jwt-json-web-token-authentication-in-asp-net-core/
NEW QUESTION 285
Drag and Drop
You are developing an ASP.NET Core web application that uses sensitive configuration data. You plan to develop the application locally and then deploy the application to a Microsoft Azure App Services Web App for testing and production. You must securely store sensitive configuration data and be able to share the data across multiple projects. You need to ensure that sensitive data is stored in local configuration files. Which technologies should you implement? (To answer, drag the appropriate technologies to the correct environments. Each technology may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.)
Answer:
Explanation:
https://docs.microsoft.com/en-us/aspnet/core/security/app-secrets?view=aspnetcore-2.1&tabs=windows
NEW QUESTION 286
Drag and Drop
You are developing an ASP.NET Core application. You plan to use YAML as the configuration language. You create a custom YAML configuration parser. You need to implement a mechanism to support reading and applying these YAML configurations. How should you complete the code? (To answer, drag the appropriate code segments to the correct locations. Each code segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.)
Answer:
Explanation:
https://andrewlock.net/creating-a-custom-iconfigurationprovider-in-asp-net-core-to-parse-yaml/
NEW QUESTION 287
Hotspot
You are developing an ASP.NET Core MVC web application. The web application must support older web browsers and implemented JavaSript features. You must use a polyfill to support the JavaScript Promise object in all browsers. You need to implement a built-in ASP.NET Core tag Helper to support polyfills. How should you complete the markup? (To answer, select the appropriate options in the answer area.)
Answer:
NEW QUESTION 288
You develop an ASP.NET web application that is self-hosted using Open Web Interface for .NET (OWIN) in a Microsoft Azure Worker role. The web application throws exceptions. You need to resolve the exceptions.
Solution: Change the application startup code to debug the OWIN pipeline.
Does the solution meet the goal?
A. Yes
B. No
Answer: B
Explanation:
We need to install the Microsoft.Owin.Diagnostics package before we change the startup code. The Microsoft.Owin.Diagnostics package contains middleware that catches unhandled exceptions and displays an HTML page with error details.
https://docs.microsoft.com/en-us/aspnet/aspnet/overview/owin-and-katana/getting-started-with-owin-and-katana#add-owin-diagnostics
NEW QUESTION 289
A company has an enterprise library that targets the full .NET framework. You must convert the library to target .NET Standard. You replace the original project file a .NET Standard project file. When you compile the library, the compiler throws the following errors:
error cs0579: Duplicate ‘System.Reflection.AssemblyCompanyAttribute’
error cs0579: Duplicate ‘System.Reflection.AssemblyVersionAttribute’
You need to resolve the errors. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Delete the bin folder and recompile the library.
B. Add the GenerateAssemblyInfo property to the .NET Standard project file set the value to False.
C. Add the GenerateAssemblyInfo property to the .NET Standard project file set the value to True.
D. Delete the Properties folder and recompile the library.
Answer: AB
NEW QUESTION 290
You plan to deploy an ASP.NET Core MVC web application to an internal server cluster that runs Kestrel on Linux. The server cluster hosts many other web applications. All applications are behind a Nginx load balancer. You need to ensure that the application meets the following requirements:
– Secure against man-in-the-middle attacks
– Allow Open ID Connect authentication
– Cache responses using HTTP caching
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Bind Kestrel to port 0.
B. Terminate Secure Sockets Layer (SSL) in Kestrel.
C. Configure ASP.NET Core to use forwarded headers.
D. Enable the proxy_cache_bypass module.
Answer: AC
Explanation:
A: When the port number 0 is specified, Kestrel dynamically binds to an available port. When the app is run, the console window output indicates the dynamic port where the app can be reached.
C: Because requests are forwarded by reverse proxy, we must use the Forwarded Headers Middleware from the Microsoft.AspNetCore.HttpOverrides package. The middleware updates the Request.Scheme, using the X-Forwarded-Proto header, so that redirect URIs and other security policies work correctly.
https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/linux-nginx?view=aspnetcore-2.2
https://docs.microsoft.com/en-us/aspnet/core/fundamentals/servers/kestrel?view=aspnetcore-2.2
NEW QUESTION 291
……
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