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Programming in C#

Question No: 101 DRAG DROP – (Topic 2)

You are developing a C# application. The application includes a class named Rate. The following code segment implements the Rate class:

You define a collection of rates named rateCollection by using the following code segment:

Collectionlt;Rategt; rateCollection = new Collectionlt;Rategt;() ;

The application receives an XML file that contains rate information in the following format:

You need to parse the XML file and populate the rateCollection collection with Rate objects.

You have the following code:

Which code segments should you include in Target 1, Target 2, Target 3 and Target 4 to complete the code? (To answer, drag the appropriate code segments to the correct targets

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:

Explanation

• Target 1: The element name is rate not Ratesheet.

  The Xmlreader readToFollowing reads until the named element is found.

• Target 2:

The following example gets the value of the first attribute.

reader.ReadToFollowing(quot;bookquot;); reader.MoveToFirstAttribute(); string genre = reader.Value;

Console.WriteLine(quot;The genre value: quot; genre);

* Target 3, Target 4:

The following example displays all attributes on the current node.

C#VB

if (reader.HasAttributes) {

Console.WriteLine(quot;Attributes of lt;quot; reader.Name quot;gt;quot;); while (reader.MoveToNextAttribute()) { Console.WriteLine(quot; {0}={1}quot;, reader.Name, reader.Value);

}

// Move the reader back to the element node. reader.MoveToElement();

}

The XmlReader.MoveToElement method moves to the element that contains the current attribute node.

Question No: 102 – (Topic 2)

You are evaluating a method that calculates loan interest. The application includes the following code segment. (Line numbers are included for reference only.)

When the loanTerm value is 5 and the loanAmount value is 4500, the loanRate must be set to 6.5 percent.

You need to adjust the loanRate value to meet the requirements. What should you do?

1. Replace line 15 with the following code segment: loanRate = 0.065m;

2. Replace line 07 with the following code segment: loanRate = 0.065m;

3. Replace line 17 with the following code segment: interestAmount = loanAmount * 0.065m * loanTerm;

4. Replace line 04 with the following code segment: decimal loanRate = 0.065m;

Answer: A

Question No: 103 – (Topic 2)

You are modifying an existing application.

The application includes a Loan class and a Customer class. The following code segment defines the classes.

You populate a collection named customer-Collection with Customer and Loan objects by using the following code segment:

You create a largeCustomerLoans collection to store the Loan objects by using the following code segment:

Collectionlt;Loangt; largeCustomerLoans = new Collectionlt;Loangt;();

All loans with an Amount value greater than or equal to 4000 must be tracked. You need to populate the largeCustomerLoans collection with Loan objects.

Which code segment should you use?

1. Option A

2. Option B

3. Option C

4. Option D

Answer: D

Explanation: Must add to the largeCustomerLoans collection, not the customerLoanCollection.

We iterate through each customer in customerCollection and check each loan belonging to this customer.

Question No: 104 – (Topic 2)

An application uses X509 certificates for data encryption and decryption. The application stores certificates in the Personal certificates collection of the Current User store. On each computer, each certificate subject is unique.

The application includes a method named LoadCertificate. The LoadCertificate() method includes the following code. (Line numbers are included for reference only.)

The LoadCertificate() method must load only certificates for which the subject exactly matches the searchValue parameter value.

You need to ensure that the LoadCertificate() method loads the correct certificates. Which code segment should you insert at line 06?

1. Option A

2. Option B

3. Option C

4. Option D

Answer: D

Question No: 105 – (Topic 2)

You are developing an application that includes methods named EvaluateLoan, ProcessLoan, and FundLoan. The application defines build configurations named TRIAL, BASIC, and ADVANCED.

You have the following requirements:

-> The TRIAL build configuration must run only the EvaluateLoan() method.

-> The BASIC build configuration must run all three methods.

-> The ADVANCED build configuration must run only the EvaluateLoan() and ProcessLoan() methods.

You need to meet the requirements. Which code segment should you use?

1. Option A

2. Option B

3. Option C

4. Option D

Answer: C

Question No: 106 DRAG DROP – (Topic 2)

You have a method that will evaluate a parameter of type Int32 named Status.

You need to ensure that the method meets the following requirements:

-> If Status is set to Active, the method must return 1.

-> If Status is set to Inactive, the method must return 0.

-> If Status is any other value, the method must return -1.

What should you do? (To answer, drag the appropriate statement to the correct location in the answer area. Each statement 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:

Question No: 107 HOTSPOT – (Topic 2)

You have the following code:

For each of the following statements, select Yes if the statement is true. Otherwise, select No.

Answer:

Explanation:

Note:

• CustomerID is declared private.

• CompanyName is declted protected.

• State is declared protected.

  The protected keyword is a member access modifier. A protected member is accessible from within the class in which it is declared, and from within any class derived from the class that declared this member.

  Question No: 108 HOTSPOT – (Topic 2)

  You have an existing order processing system that accepts .xml files,

  The following code shows an example of a properly formatted order in XML:

  

  You create the following class that will be serialized:

  

  For each of the following properties, select Yes if the property is serialized according to the defined schema. Otherwise, select No.

  

  Answer:

  

  Question No: 109 – (Topic 2)

  You are developing a method named GenerateHash that will create the hash value for a file. The method includes the following code. (Line numbers are included for reference only.)

  

  You need to return the cryptographic hash of the bytes contained in the fileBuffer variable. Which code segment should you insert at line 05?

  

  1. Option A

  2. Option B

  3. Option C

  4. Option D

  Answer: D

  Question No: 110 DRAG DROP – (Topic 2)

  You have the following code.

  

  You need to return all of the products and their associated categories.

  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:

  Target 1: from

  Target 2: join

  Target 3: on

  Target 4: equals

  Example: Join operations create associations between sequences that are not explicitly

  modeled in the data sources. For example you can perform a join to find all the customers and distributors who have the same location. In LINQ the join clause always works against object collections instead of database tables directly.

  C#

  var innerJoinQuery = from cust in customers

  join dist in distributors on cust.City equals dist.City

  select new { CustomerName = cust.Name, DistributorName = dist.Name };

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