You are developing a web page that consumes a Windows Communication Foundation
(WCF) service. The page includes the following code segment.
var xhr = new XMLHttpRequest() ;

The page uses the xhrHandler() method to listen for changes to the request status of the
WCF service calls. It uses the xmlToJavaScript() method to convert the response from the
WCF service to a JavaScript object.
The xhrHandler() method must be called automatically each time the request status
changes.
You need to add the event handler to the request object.
Which line of code should you use?

DRAG DROP
You are developing a web application that retrieves data from a web service. The data being
retrieved is a custom binary datatype named bint. The data can also be represented in XML.
Two existing methods named parseXml() and parseBint() are defined on the page.
The application must:
Retrieve and parse data from the web service by using binary format if possible
Retrieve and parse the data from the web service by using XML when binary format is not
possible
You need to develop the application to meet the requirements.
What should you do? (To answer, drag the appropriate code segment to the correct location.
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.)

You are developing a customer web form that includes following HTML.
<input id=”txtValue”/>
You need to develop the form so that customers can enter only a valid country code
consisting of three English alphabet characters.

Which code segment should you use?

You are developing an application that consumes an external web service that returns the
latest stock rate.
The application has two methods:
The getResults() method makes an AJAX web service request
The ShowRate() method displays the stock rate from the web service response
You need to ensure that the ShowRate() method always displays the latest stock rate.
Which code segment should you use?

DRAG DROP
You are developing an application that reads information from a file.
The application must:
Execute a block of code if there is an error accessing the file
Execute a second block of code whether or not there is an error accessing the file
You need to ensure that the error handling requirements are met.
Which three statements should you implement in sequence? (To answer, move the
appropriate statements from the list of actions to the answer area and arrange them in the
correct order.)

HOTSPOT
You are developing an online shopping application that accepts credit cards for payment.
If the credit card number is invalid, the application must:
Generate an error
Assign “200” to the error number
Assign “Invalid” to the error description
You need to write the code that meets the requirements.
How should you write the code? (To answer, select the appropriate option from the dropdown list in the answer area.)

You are creating a JavaScript function to display the current version of a web application
You declare a button as follows.
<input type=”button” id=”About” value=”About” />
You need to create an event handler for the button by using an anonymous function.
Which code segment should you use?

DRAG DROP
You are creating a function by using JavaScript. The function accepts an object as the
parameter and returns a string that identifies the data type of the object.
You have the following requirements:
The function must return “Number” if the object is a number
The function must return “String” if the object is a string
The function must return “Unknown” if the object is neither a number nor a string
You need to implement the function to meet the requirements.
How should you build the code segment? (To answer, drag the appropriate word to the
correct location in the code segment. Each word 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.)

You are testing the value of the following variable in JavaScript.
var height = “300”;
A block of code must execute if the following conditions are true:
The height variable is set to 300
The height variable is of type string
You need to implement the code to run the test.
Which line of code should you use?

DRAG DROP
You are developing an application for an online retailer. The company ships only to certain
countries.
The application must:
Store a list of country codes in an array
Validate the country code of the shipping address against the countries array
Include a Boolean value in the array that indicates whether or not you can ship to the country
Display a list of countries that can be shipped to if the user inputs a code for a country that
the retailer cannot ship to
You need to develop the application to meet the requirements.
Which code segment or segments should you use? (To answer, drag the appropriate code
segment or segments from the list of code segments to the correct location or locations in
the work 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.)