18 09 2015

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Exam Code: 70-480
Exam Name Programming in HTML5 with JavaScript and CSS3
Certification Provider: Microsoft
Corresponding Certifications: MCSD, MCSD: SharePoint Applications, MCSD: Web Applications, MCSD: Windows Store Apps, Microsoft Specialist: Visual Studio

Keywords:70-480 Dumps,70-480 Exam Questions,70-480 VCE,70-480 PDF,70-480 Practice Exams,70-480 Practice Tests,70-480 Braindump,70-480 Programming in HTML5 with JavaScript and CSS3

QUESTION 141
Which of the following represent valid variable declarations? (Choose all that apply.)

A.    var switch;
B.    var myChar;
C.    var $cost;
D.    var _total;
E.    var 1to1;
F.    var tooGood4u;

Answer: BCDF

QUESTION 142
You are developing an HTML5 web application.
The application loads data from a web service by using AJAX.
The application displays the data by calling the displayData function.
The data is loaded by using the following code.

You need to ensure that the data is displayed when it is successfully retrieved from the web service.
Which code segment should you use?

A.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: B

QUESTION 143
You are developing a web page that performs CPU-intensive calculations.
A web worker processes these calculations on a separate background thread.
The process is instantiated from the web page.
You need to stop the web worker process after the calculations are completed.
Which two actions can you perform to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A.    From the web page, call the close() method.
B.    From the web worker process, call the terminate() method.
C.    From the web page, call the terminate() method.
D.    From the web worker process, call the close() method.

Answer: CD

QUESTION 144
You are developing an HTML5 page named main.html.
The JavaScript code for the main page is located in a file named myApp.js.
You need to create a web worker and instantiate it from main.html.
Where should you place the web worker code?

A.    In the myApp.js file
B.    In the main.html file
C.    In a separate .js (JavaScript) file
D.    In a separate executable file

Answer: C

QUESTION 145
You are developing a JavaScript library.
You have the following requirements:
– Custom exceptions must include an error message and custom error number.
– These exceptions must be thrown when data validation errors occur.
– Developers must call the library to easily catch the exception and identify the problem.
You develop the following code. (Line numbers are included for reference only.)
You need to complete the code to meet the requirements.
Which line of code should you insert at line 09?

A.    throw new Validatior.Exception (123, “Day of week must be les3 than 7”);
B.    return new ValidationException(123, “Day of week must be less than 7”);
C.    throw ValidationException(123, “Day of week must be less than 7”);
D.    catch ValidationException(123, “Day of week: must be less than 7”);

Answer: A

QUESTION 146
You are developing an application that retrieves a stock rate from an external web service.
A web page displays a simple rotating animation to indicate whether the stock rate is increased or decreased.
The default image, as shown in the following graphic, indicates unchanged or neutral.

The arrow must point down if the stock rate is decreased, as shown in the following graphic.

You need to ensure that the arrow points down when the stock rate decreases.
Which CSS style should you apply?

A.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: D

QUESTION 147
You are troubleshooting a web page that includes the following code segment.
You need to evaluate the value of the variable x.
What will be displayed in the user interface?

A.    0
B.    1
C.    2
D.    An error

Answer: A

QUESTION 148
You develop an HTML5 chat application.
You need to provide real-time updates to the messages that users post in the chat application.
What should you do?

A.    Use get o to obtain data updates.
B.    Use a RESTful web service.
C.    Use WebSockets.
D.    Use ajaxo to obtain data updates.

Answer: C

QUESTION 149
You are creating a rotating image of a company logo.
The logo must spin on a horizontal axis and on a vertical axis.
You need to use the least amount of development effort to meet the requirement.
What should you do?

A.    Create an Image Spinner object, load the image into the spinner, and set the horizontal and
vertical rotation properties.
B.    Create a Canvas Globe transform and set the image as the globe object. Set the horizontal
and vertical rotation properties.
C.    Create a single Canvas 3D transform and load the image into it. Set the rotation properties.
D.    Create a Canvas 2D transform and set the image to rotate horizontally and vertically.

Answer: C

QUESTION 150
You are developing an HTML5 web application that provides a discussion forum for users.
When a user registers to access the application, the user enters an email address.
Users can enter data that can result in cross-site scripting (XSS) attacks.
You need to ensure that email input is as secure as possible.
Which two techniques should you use? (Each correct answer presents a complete solution. Choose two.)

A.    Remove all nonalphanumeric characters before submitting data.
B.    Use the email tag in forms where the email address is entered.
C.    Display all email addresses inside of an HTML5 ADDRESS element.
D.    Use jQuery validation with a regular expression to ensure that email addresses are valid.
E.    Ensure that all form data is encrypted when it is submitted.

Answer: BD

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