NEW QUESTION 1
You are developing an application.
The application contains the following code segment (line numbers are included for reference only):

When you run the code, you receive the following error message: "Cannot implicitly convert type 'object'' to 'int'. An explicit conversion exists (are you missing a cast?)."
You need to ensure that the code can be compiled. Which code should you use to replace line 05?

• A. var2 = arrayl[0] is int;
• B. var2 = ((List<int>)arrayl) [0];
• C. var2 = arrayl[0].Equals(typeof(int));
• D. var2 = (int) arrayl [0];

Answer: D

NEW QUESTION 2
You are developing an application that includes a method named SendMessage.
You need to ensure that the SendMessage() method is called with the required parameters. Which two code segments can you use to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

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

Answer: CD

Explanation: D: ExpandoObject
Represents an object whose members can be dynamically added and removed at run time.
/ The ExpandoObject class enables you to add and delete members of its instances at run time and also to set and get values of these members. This class supports dynamic binding, which enables you to use standard syntax like sampleObject.sampleMember instead of more complex syntax like sampleObject.GetAttribute("sampleMember").
/ You can pass instances of the ExpandoObject class as parameters. Note that these instances are treated as dynamic objects in C# and late-bound objects in Visual Basic. This means that you do not have IntelliSense for object members and you do not receive compiler errors when you call nonexistent members. If you call a member that does not exist, an exception occurs.
Incorrect:
Not A, not B: It tries to get/set From, to properties of type Object. It does not compile.

NEW QUESTION 3
You are creating a class library that will be used in a web application. You need to ensure that the class library assembly is strongly named. What should you do?

• A. Use assembly attributes.
• B. Use the csc.exe /target:Library option when building the application.
• C. Use the xsd.exe command-line tool.
• D. Use the EdmGen.exe command-line tool.

Answer: A

Explanation: The Windows Software Development Kit (SDK) provides several ways to sign an assembly with a strong name:
* (A) Using assembly attributes to insert the strong name information in your code. You can use either the AssemblyKeyFileAttribute or the AssemblyKeyNameAttribute, depending on where the key file to be used is located.
* Using the Assembly Linker (Al.exe) provided by the Windows SDK.
* Using compiler options such /keyfile or /delaysign in C# and Visual Basic, or the /KEYFILE or
/DELAYSIGN linker option in C++. (For information on delay signing, see Delay Signing an Assembly.)

NEW QUESTION 4
HOTSPOT
You have the following code:

Use the drop-down lists to select the answer choice that completes each statement.

Answer:

Explanation:

NEW QUESTION 5
An application receives JSON data in the following format:

The application includes the following code segment. (Line numbers are included for reference only.)

You need to ensure that the ConvertToName() method returns the JSON input string as a Name object.
Which code segment should you insert at line 10?

• A. Return ser.Desenalize (json, typeof(Name));
• B. Return ser.ConvertToType<Name>(json);
• C. Return ser.Deserialize<Name>(json);
• D. Return ser.ConvertToType (json, typeof (Name));

Answer: C

Explanation: JavaScriptSerializer.Deserialize<T> - Converts the specified JSON string to an object of type T. http://msdn.microsoft.com/en-us/library/bb355316.aspx

NEW QUESTION 6
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.)

• A. Update the platform target and conditional compilation symbols for each application configuration.
• B. Create two application configurations based on the default Release configuration.
• C. Optimize the application through address rebasing in the 64-bit configuration.
• D. Create two application configurations based on the default Debug configuratio

Answer: AD

Explanation: A: “include pre-processor directives that are specific to the system configuration” system configuration here refers to bitness ie 32-bit or 64-bit
so the developer wants to use in code different pre-processor directives for 32/64 bit,
this is achieved by defining and using conditional compilation symbols for different platform targets (platform target is VS term for bitness ie for 32/64 bit).
D (not B): The question about testing, debugging, stack trace, line numbers etc. There is not a single word about release

NEW QUESTION 7
You are creating a console application named App1.
App1 retrieves data from the Internet by using JavaScript Object Notation (JSON).
You are developing the following code segment (line numbers are included for reference only):

You need to ensure that the code validates the JSON string. Which code should you insert at line 03?

• A. DataContractSerializer serializer = new DataContractSerializer();
• B. var serializer = new DataContractSerializer();
• C. XmlSerlalizer serializer = new XmlSerlalizer();
• D. var serializer = new JavaScriptSerializer();

Answer: D

Explanation: The JavaScriptSerializer Class Provides serialization and deserialization functionality for AJAXenabled applications.
The JavaScriptSerializer class is used internally by the asynchronous communication layer to serialize and deserialize the data that is passed between the browser and the Web server. You cannot access that instance of the serializer. However, this class exposes a public API. Therefore, you can use the class when you want to work with JavaScript Object Notation (JSON) in managed code.

NEW QUESTION 8
DRAG DROP
You are creating a method that will split a single input file into two smaller output files. The method must perform the following actions:
Create a file named header.dat that contains the first 20 bytes of the input file. Create a file named body.dat that contains the remainder of the input file. You need to create the method.
How should you complete the relevant code? (To answer, drag the appropriate code segments to the correct locations in the answer area. 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: “offset” and “count” parameters of “Stream.Read” / “Stream.Write” methods ALWAYS refer to the array you are sending in the first parameter.
The position of fsSource advances as you read it, unless you seed on it.

NEW QUESTION 9
DRAG DROP
You have the following code.

You need to complete the method to return the content as a string.
How should you complete the code? To answer, drag the appropriate code elements to the correct targets in the answer area. Each code element 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:

NEW QUESTION 10
You are implementing a method named GetValidEmailAddresses. The GetValidEmailAddresses() method processes a list of string values that represent email addresses.
The GetValidEmailAddresses() method must return only email addresses that are in a valid format. You need to implement the GetValidEmailAddresses() method.
Which two code segments can you use to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

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

Answer: BD

Explanation: Note:
* List<T>.Add Method
Adds an object to the end of the List<T>.

NEW QUESTION 11
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.)

• A. AssemblyKeyNameAttribute
• B. ObfuscateAssemblyAttribute
• C. AssemblyDelaySignAttribute
• D. AssemblyKeyFileAttribute

Answer: CD

Explanation: * AssemblyDelaySignAttribute
Specifies that the assembly is not fully signed when created.
* The following code example shows the use of the AssemblyDelaySignAttribute attribute with the AssemblyKeyFileAttribute.
using System;
using System.Refilection; [assembly:AssemblyKeyFileAttribute(“TestPublicKey.snk”)] [assembly:AssemblyDelaySignAttribute(true)]
namespace DelaySign
{
public class Test { }
}
Reference: http://msdn.microsoft.com/en-us/library/t07a3dye(v=vs.110).aspx

NEW QUESTION 12
You have a collection of Product objects named products. Each Product has a category. You need to determine the longest name for each category.
You write the following code.

Which keyword should you use for Target 1?

• A. Group
• B. Where
• C. Aggregate
• D. Select

Answer: B

NEW QUESTION 13
You are developing an application that uses the Microsoft ADO.NET Entity Framework to retrieve order information from a Microsoft SQL Server database. The application includes the following code. (Line numbers are included for reference only.)

The application must meet the following requirements:
Return only orders that have an OrderDate value other than null.
Return only orders that were placed in the year specified in the year parameter.
You need to ensure that the application meets the requirements. Which code segment should you insert at line 08?

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

Answer: B

NEW QUESTION 14
You have an application that accesses a Web server named Server1.
You need to download an image named Imagel.jpg from Server1 and store the image locally as Filel.jpg.
Which code should you use?

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

Answer: C

NEW QUESTION 15
You are creating a class named Loan.
The Loan class must meet the following requirements: Include a member that represents the rate for a Loan instance. Allow external code to assign a value to the rate member.
Restrict the range of values that can be assigned to the rate member.
You need to implement the rate member to meet the requirements. In which form should you implement the rate member?

• A. public static property
• B. public property
• C. public static field
• D. protected field

Answer: B

Explanation: For a public the type or member can be accessed by any other code in the same assembly or another assembly that references it.
Reference: Access Modifiers (C# Programming Guide) https://msdn.microsoft.com/en-us/library/ms173121.aspx

NEW QUESTION 16
You are developing a Windows Forms (WinForms) application. The application displays a TreeView that has 1,000 nodes.
You need to ensure that if a user expands a node, and then collapses the TreeView, the node object is kept in memory unless the Garbage Collector requires additional memory.
Which object should you use to store the node?

• A. GC
• B. Handle
• C. Cache
• D. Wea kReference

Answer: D

Explanation: References: https://msdn.microsoft.com/en-us/library/ms404247.aspx