HOTSPOT
You are developing an ASP.NET MVC application that will be hosted on Microsoft Azure. The application includes the StackExchange.Redis client package. A variable named CacheConnectionConfiguration stores the cache endpoint URL and the password to connect to the cache.
The application must store a user's color selection by using the Azure Redis cache. The cached value must expire after 90 minutes. You need to cache the user's color selection.
How should you complete the relevant code? To answer, choose the appropriate code segment from each list in the answer area.

Correct Answer:

Explanation

Box 1: var cache = connection.GetDatabase():
Once the connection is established, return a reference to the redis cache database by calling the ConnectionMultiplexer.GetDatabase method.
Box 2: cache StringSet("color", colorSelection,TimeSpan.FromMinutes(90)); The TimeSpanFromMinutes method returns a TimeSpan that represents a specified number of minutes, where the specification is accurate to the nearest millisecond.
Example: The following code snippet shows how to set an expiration time of 90 minutes on a key.
// Add a key with an expiration time of 90 minutes
await cache.StringSetAsync("data:key1", 99, TimeSpan.FromMinutes(90));
References: https://docs.microsoft.com/en-us/azure/redis-cache/cache-dotnet-how-to-use-azure-redis-cache
https://msdn.microsoft.com/en-us/library/system.timespan.fromminutes(v=vs.110).aspx

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You are developing an ASP.NET MVC web application that includes the following method.

You need to test the AccountBalance method. Which unit test should you use?

• A.Option A
• B.Option B
• C.Option C
• D.Option D

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You are developing an ASP.NET MVC application by using Visual Studio 2012. The application throws and handles exceptions when it runs. You need to examine the state of the application when exceptions are thrown. What should you do?

• A.Add the following code to the Web.config file of the application:
  <customErrors mode="On" >
  <error statusCode="404" redirect="CustomErrors.html"/>
  </customErrors>
• B.Add the following code to the Web.config file of the application:
  <customErrors mode="On">
  <error statusCode="500" redirect="CustomErrors.html" />
  </customErrors>
• C.From the DEBUG menu in Visual Studio 2012, select Exceptions. Enable the Thrown check box for Common Language Runtime Exceptions.
• D.From the DEBUG menu in Visual Studio 2012, select Exceptions. Disable the User-unhandled check box for Common Language Runtime Exceptions.

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You are developing an ASP.NET MVC application that enables you to edit and save a contact.
The application must not save on an HTTP GET request.
You need to implement the controller.
Which two possible code segments should you use? Each correct answer presents a complete solution.

• A.Option A
• B.Option B
• C.Option C
• D.Option D

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You are developing an ASP.NET MVC application that provides instant messaging capabilities to customers.
You have the following requirements:
* Messages must be able to be sent and received simultaneously.
* Latency and unnecessary header data must be eliminated.
* The application must comply with HTML5 standards.
You need to design the application to meet the requirements.
What should you do?

• A.Instantiate a MessageChannel object on the client.
• B.Configure polling from the browser.
• C.Implement long-running HTTP requests.
• D.Implement WebSockets protocol on the client and the server.

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