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2021 Mar 70-483 real exam
Q61. - (Topic 2)
You need to write a console application that meets the following requirements:
. If the application is compiled in Debug mode, the console output must display Entering debug mode. . If the application is compiled in Release mode, the console output must display Entering release mode.
Which code should you use?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: D
Explanation: Programmatically detecting Release/Debug mode (.NET)
Boolean isDebugMode = false;
#if DEBUG
isDebugMode = true;
#endif
Reference: http://stackoverflow.com/questions/654450/programmatically-detecting-release-debug-mode-net
Q62. - (Topic 2)
You are developing an application that includes the following code segment:
You need to implement both Start() methods in a derived class named UseStart that uses the Start() method of each interface.
Which two code segments should you use? (Each correct answer presents part of the solution. Choose two.)
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
F. Option F
Answer: B,E
Explanation: B:
* Implementing Multiple Interfaces
A class can implement multiple interfaces using the following syntax:
C#
public class CDAndDVDComboPlayer : ICDPlayer, IDVDPlayer
If a class implements more than one interface where there is ambiguity in the names of members, it is resolved using the full qualifier for the property or method name. In other words, the derived class can resolve the conflict by using the fully qualified name for the method to indicate to which interface it belongs
* In C#, both inheritance and interface implementation are defined by the : operator, equivalent to extends and implements in Java. The base class should always be leftmost in the class declaration.
Q63. 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.)
Answer:
Q64. 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:
Collection<Rate> rateCollection = new Collection<Rate>() ;
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.
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:
Q65. - (Topic 2)
You are creating a console application named App1.
App1 will validate user input for order entries.
You are developing the following code segment (line numbers are included for reference only):
You need to complete the code segment.
The solution must ensure that prices are positive and have two decimal places.
Which code should you insert at line 03?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: B
Explanation: * Regex.IsMatch Method (String, String)
Indicates whether the specified regular expression finds a match in the specified input string.
Syntax:
public static bool IsMatch(
string input,
string pattern
)
Far out 70-483 free exam:
Q66. - (Topic 1)
You are developing a C# application that includes a class named Product. The following code segment defines the Product class:
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?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: B
Q67. - (Topic 2)
You are developing an application by using C#. The application includes a method named SendMessage. The SendMessage() method requires a string input.
You need to replace "Hello" with "Goodbye" in the parameter that is passed to the SendMessage() 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: B,C
Explanation: * The first parameter should be Hello.
* String.Replace Method (String, String)
Returns a new string in which all occurrences of a specified string in the current instance are replaced with another specified string.
This method does not modify the value of the current instance. Instead, it returns a new string in which all occurrences of oldValue are replaced by newValue.
Q68. DRAG DROP - (Topic 1)
You are developing an application by using C#. The application will process several objects per second.
You need to create a performance counter to analyze the object processing.
Which three actions should you perform in sequence? (To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.)
Answer:
Q69. - (Topic 2)
You have the following code:
You need to retrieve all of the numbers from the items variable that are greater than 80. Which code should you use?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
Q70. - (Topic 2)
You are implementing a method named GetValidPhoneNumbers. The GetValidPhoneNumbers() method processes a list of string values that represent phone numbers.
The GetValidPhoneNumbers() method must return only phone numbers that are in a valid format.
You need to implement the GetValidPhoneNumbers() 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: A,B
Explanation: * Regex.Matches Searches an input string for all occurrences of a regular expression and returns all the matches.
* MatchCollection
Represents the set of successful matches found by iteratively applying a regular
expression pattern to the input string.
The collection is immutable (read-only) and has no public constructor. The Regex.Matches
method returns a MatchCollection object.
* List<T>.Add Method
Adds an object to the end of the List<T>.