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Programming in C#

Question No: 71 – (Topic 1)

You are creating a console application by using C#. You need to access the application assembly.

Which code segment should you use?

  1. Assembly.GetAssembly(this);

  2. this.GetType();

  3. Assembly.Load();

  4. Assembly.GetExecutingAssembly();

Answer: D Explanation:

Assembly.GetExecutingAssembly – Gets the assembly that contains the code that is currently executing.

http://msdn.microsoft.com/en- us/library/system.reflection.assembly.getexecutingassembly(v=vs.110).aspx

Assembly.GetAssembly – Gets the currently loaded assembly in which the specified class is defined.

http://msdn.microsoft.com/en-us/library/system.reflection.assembly.getassembly.aspx

Question No: 72 – (Topic 1)

You are developing an application by using C#. The application includes the following code segment. (Line numbers are included for reference only.)

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The DoWork() method must throw an InvalidCastException exception if the obj object is not of type IDataContainer when accessing the Data property.

You need to meet the requirements. Which code segment should you insert at line 07?

  1. var dataContainer = (IDataContainer) obj;

  2. var dataContainer = obj as IDataContainer;

  3. var dataContainer = obj is IDataContainer;

  4. dynamic dataContainer = obj;

Answer: A Explanation:

http://msdn.microsoft.com/en-us/library/ms173105.aspx

Question No: 73 – (Topic 1)

You are developing a C# application that includes a class named Product. The following code segment defines the Product class:

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You implement System.ComponentModel.DataAnnotations.IValidateableObject interface to provide a way to validate the Product object.

The Product object has the following requirements:

-> The Id property must have a value greater than zero.

-> The Name property must have a value other than empty or null.

You need to validate the Product object. Which code segment should you use?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: B

Question No: 74 DRAG DROP – (Topic 1)

You are developing an application that will include a method named GetData. The GetData() method will retrieve several lines of data from a web service by using a System.IO.StreamReader object.

You have the following requirements:

-> The GetData() method must return a string value that contains the first line of the response from the web service.

-> The application must remain responsive while the GetData() method runs.

You need to implement the GetData() method.

How should you complete the relevant code? (To answer, drag the appropriate objects to the correct locations in the answer area. Each object 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.)

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Answer:

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Question No: 75 – (Topic 1)

An application will upload data by using HTML form-based encoding. The application uses a method named SendMessage.

The SendMessage() method includes the following code. (Line numbers are included for reference only.)

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The receiving URL accepts parameters as form-encoded values.

You need to send the values intA and intB as form-encoded values named a and b, respectively.

Which code segment should you insert at line 04?

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  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: D Explanation:

WebClient.UploadValuesTaskAsync – Uploads the specified name/value collection to the resource identified by the specified URI as an asynchronous operation using a task object. These methods do not block the calling thread.

http://msdn.microsoft.com/en-us/library/system.net.webclient.uploadvaluestaskasync.aspx

Question No: 76 – (Topic 1)

You are developing an application by using C#. You provide a public key to the development team during development.

You need to specify that the assembly is not fully signed when it is built.

Which two assembly attributes should you include in the source code? (Each correct answer presents part of the solution. Choose two.)

  1. AssemblyKeyNameAttribute

  2. ObfuscateAssemblyAttribute

  3. AssemblyDelaySignAttribute

  4. AssemblyKeyFileAttribute

Answer: C,D Explanation:

http://msdn.microsoft.com/en-us/library/t07a3dye(v=vs.110).aspx

Question No: 77 – (Topic 1)

You are developing an application that will transmit large amounts of data between a client computer and a server. You need to ensure the validity of the data by using a cryptographic hashing algorithm. Which algorithm should you use?

  1. RSA

  2. HMACSHA2S6

  3. Aes

  4. RNGCryptoServiceProvider

Answer: B

Question No: 78 – (Topic 1)

You are developing an application by using C#.

You have the following requirements:

-> Support 32-bit and 64-bit system configurations.

-> Include pre-processor directives that are specific to the system configuration.

-> Deploy an application version that includes both system configurations to testers.

-> Ensure that stack traces include accurate line numbers.

You need to configure the project to avoid changing individual configuration settings every time you deploy the application to testers.

Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

  1. Update the platform target and conditional compilation symbols for each application configuration.

  2. Create two application configurations based on the default Release configuration.

  3. Optimize the application through address rebasing in the 64-bit configuration.

  4. Create two application configurations based on the default Debug configuration.

Answer: B,D

Question No: 79 HOTSPOT – (Topic 1)

You are implementing a library method that accepts a character parameter and returns a string.

If the lookup succeeds, the method must return the corresponding string value. If the lookup fails, the method must return the value quot;invalid choice.quot;

You need to implement the lookup algorithm.

How should you complete the relevant code? (To answer, select the correct keyword in each drop-down list in the answer area.)

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Answer:

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Explanation:

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http://msdn.microsoft.com/en-us/library/06tc147t(v=vs.110).aspx

Question No: 80 HOTSPOT – (Topic 1)

You are developing an application that includes a Windows Communication Foundation (WCF) service. The service includes a custom TraceSource object named ts and a method named DoWork. The application must meet the following requirements:

-> Collect trace information when the DoWork() method executes.

-> Group all traces for a single execution of the DoWork() method as an activity that can be viewed in the WCF Service Trace Viewer Tool.

You need to ensure that the application meets the requirements.

How should you complete the relevant code? (To answer, select the correct code segment from each drop-down list in the answer area.)

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Answer:

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