[Free] Download New Updated (October 2016) Microsoft 70-480 Real Exam 51-60

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QUESTION 51

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?

 

A.

xhr.onCallback = xhrHandler;

B.

xhr.onreadystatechange = xhrHandler;

C.

xhr.readyState = xhrHandler;

D.

xhr.status = xhrHandler;

 

Correct Answer: B

Explanation:

http://mrfwebdesign.blogspot.ca/2008/11/xmlhttprequest-xhr.html

 

 

QUESTION 52

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:

 

clip_image002Retrieve and parse data from the web service by using binary format if possible

clip_image002[1]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.)

 

clip_image003

 

Correct Answer:

clip_image004

 

 

 

 

 

 

 

 

 

 

 

 

 

QUESTION 53

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?

 

clip_image006

 

A.

Option A

B.

Option B

C.

Option C

D.

Option D

 

Correct Answer: C

 

 

QUESTION 54

You are developing an application that consumes an external web service that returns the

latest stock rate.

 

The application has two methods:

 

clip_image002[2]The getResults() method makes an AJAX web service request

clip_image002[3]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?

 

clip_image008

 

A.

Option A

B.

Option B

C.

Option C

D.

Option D

 

Correct Answer: D

QUESTION 55

DRAG DROP

You are developing an application that reads information from a file.

 

The application must:

 

clip_image002[4]Execute a block of code if there is an error accessing the file

clip_image002[5]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.)

 

clip_image010

 

Correct Answer:

clip_image012

 

 

 

 

 

 

 

 

 

 

 

 

 

QUESTION 56

HOTSPOT

You are developing an online shopping application that accepts credit cards for payment.

 

If the credit card number is invalid, the application must:

 

clip_image002[6]Generate an error

clip_image002[7]Assign “200” to the error number

clip_image002[8]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 drop- down list in the answer area.)

 

clip_image014

clip_image016

 

Correct Answer:

clip_image018

 

 

 

 

 

 

 

 

 

QUESTION 57

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?

 

clip_image020

 

A.

Option A

B.

Option B

C.

Option C

D.

Option D

 

Correct Answer: C

 

 

QUESTION 58

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:

 

clip_image002[9]The function must return “Number” if the object is a number

clip_image002[10]The function must return “String” if the object is a string

clip_image002[11]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.)

 

clip_image022

 

Correct Answer:

clip_image024

 

 

 

 

QUESTION 59

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:

 

clip_image002[12]The height variable is set to 300

clip_image002[13]The height variable is of type string

 

You need to implement the code to run the test.

 

Which line of code should you use?

 

A.

if (height = = 300)

B.

if (height = = “300”)

C.

if (height ! “300”)

D.

if (height ! = 300)

 

Correct Answer: B

Explanation:

Use = = to test for equality.

Use “3
00” to test for the string.

 

 

QUESTION 60

DRAG DROP

You are developing an application for an online retailer. The company ships only to certain countries.

 

The application must:

 

clip_image002[14]Store a list of country codes in an array

clip_image002[15]Validate the country code of the shipping address against the countries array

clip_image002[16]Include a Boolean value in the array that indicates whether or not you can ship to the country

clip_image002[17]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.)

 

clip_image025

 

Correct Answer:

clip_image026

 

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