Ensurepass

QUESTION 51

You are developing a class named ExtensionMethods

You need to ensure that the ExtensionMethods class implements the IsUrl() method on string 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.)

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Select and Place:

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Correct Answer:

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QUESTION 52

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 "invalid choice."

You need to implement the lookup algorithm.

clip_image006How 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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Hot Area:

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Correct Answer:

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QUESTION 53

You develop an application that displays information from log files.

When a user opens a log file by using the application, the application throws an exception and closes. The application must preserve the original stack trace information when an exception occurs.

You need to implement the method that reads the log files.

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.)

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Select and Place:

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Correct Answer:

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QUESTION 54

You are developing an application that includes a class named Kiosk. The Kiosk class includes a static

property named Catalog. The Kiosk class is defined by the following code segment. (Line numbers are included for reference only.)

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You have the following requirements:

-Initialize the _catalog field to a Catalog instance.

-Initialize the _catalog field only once.

-Ensure that the application code acquires a lock only when the _catalog object must be instantiated.

You need to meet the requirements.

Which three code segments should you insert in sequence at line 09? (To answer, move the appropriate code segments from the list of code segments to the answer area and arrange them in the correct order.)

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Select and Place:

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Correct Answer:

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QUESTION 55

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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Select and Place:

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Correct Answer:

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QUESTION 56

You are developing an application that implements a set of custom exception types. You declare the custom

exception types by using the following code segments:

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The application includes a function named DoWork that throws .NET Framework exceptions and custom exceptions.

The application contains only the following logging methods:

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The application must meet the following requirements:

-When AdventureWorksValidationException exceptions are caught, log the information by using the static void Log (AdventureWorksValidationException ex) method. -When AdventureWorksDbException or other

AdventureWorksException exceptions are caught, log the information by using the static void I oq( AdventureWorksException ex) method.

You need to meet the requirements.

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.)

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Select and Place:

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Correct Answer:

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QUESTION 57

You are testing an application. The application includes methods named Calculatelnterest and LogLine.

The Calculatelnterest () method calculates loan interest. The Logl_ine() method sends diagnostic messages to a console window.

You have the following requirements:

-The Calculatelnterest() method must run for all build configurations. -Logl_ine() method must run only for debug builds.

You need to ensure that the methods run correctly.

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.)

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Correct Answer:

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QUESTION 58

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.)

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Correct Answer:

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QUESTION 59

You are developing an application that includes a class named Warehouse. The Warehouse class includes

a static property named Inventory- The Warehouse class is defined by the following code segment. (Line numbers are included for reference only.)

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You have the following requirements:

-Initialize the _inventory field to an Inventory instance.

-Initialize the _inventory field only once.

-Ensure that the application code acquires a lock only when the _inventory object must be instantiated. You need to meet the requirements.

Which three code segments should you insert in sequence at line 09? (To answer, move the appropriate code segments from the list of code segments to the answer area and arrange them in the correct order.)

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Select and Place:

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Correct Answer:

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QUESTION 60

You are implementing a method that creates an instance of a class named User. The User class contains a public event named Renamed. The following code segment defines the Renamed event: Public event

EventHandler<RenameEventArgs> Renamed;

You need to create an event handler for the Renamed event by using a lambda expression.

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.)

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Select and Place:

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Correct Answer:

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