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70-480 Question Answers

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Programming in HTML5 with JavaScript and CSS3



Skills measured in this exam are:
Implement program flow (25%)
Implement and manipulate document structures and objects (24%)
Use CSS3 in applications (25%)
Access and secure data (26%)


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You develop a webpage that allows a user to download a 3PEG image and convert it to a PNG file. You need to implement the code to download the contents of the JPEG image with no additional decoding.
Which JavaScript function should you use?

A. readAsBinaryString()
B. readAsArrayBuffer()
C. readAsDataURL()
D. readAsText()

Answer: B


You are modifying a blog site to improve search engine readability.
You need to group relevant page content together to maximize search engine readability.
Which tag should you use?

A.B.


C.

D.

Answer: B

Explanation/Reference:

The

tag specifies independent, self-contained content :
An article should make sense on its own and it should be possible to distribute it independently from the rest of the site.
Potential sources for the
element :

Forum post
Blog post
News story
Comment


You are developing an HTML5 web form to collect feedback information from site visitors.
The web form must display an INPUT element that meets the following requirements:
Allow numeric values between 1 and 10.
Default to the value of 5.
Display as a slider control on the page.
You need to add the INPUT element to the form.
Which HTML element should you add?

A. Rating (Between 1 and 10): <input type=”number” name=”rating” min =”1″ max-“10”>
B. Rating (Between 1 and 10): <input type=”number” name=”rating” min=”1″ max=”10″ default=”5″>
C. Rating (Between 1 and 10): <input type=”range” name=”rating” min=”1″ max=”10″ default”=”5″>
D. Rating (Between 1 and 10): <input type=”range” name=”rating” min=”10″ max=”10″ value=”5″>

Answer: C

Explanation/Reference:

input type=”range”
The <input type=”range”> is used for input fields that should contain a value within a range.
Depending on browser support, the input field can be displayed as a slider control.
Example :
<form>
<input type=”range” name=”points” min=”0″ max=”10″> </form>


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?

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

Answer : C


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;

Answer : B


You are creating a class named Consultant that must inherit from the Employee class. The Consultant class must modify the inherited PayEmployee method. The Employee class is defined as follows.function Employee() {}Employee.prototype.PayEmployee = function ( ){alertt’Hi there!’);}Future instances of Consultant must be created with the overridden method. You need to write the code to implement the Consultant class. Which code segments should you use? (Each correct answer presents part of the solution. Choose two.)

A.  Consultant.PayEmployee=function (){alert(‘Pay Consulant’);}
B.  Consultant.prototype.PayEmployee=function (){alert(‘Pay Consultant’);}
C. function Consultant () {Employee.call(this);}Consultant.prototype=newEmployee();Consultant.prototype.constructor= Consultant;
D.  function Consultant() {Employee.call(this); }Consultant.prototype.constructor = Consultant.create;

Answer : BC


You are developing a customer web form that includes the following HTML.<input id?quot;txtValu”; >; A customer must enter a value in the text box prior to submitting the form.You need to add validation to the text box control.Which HTML should you use?

A. <input id=”txtValue” type=”text” required=”required”/>
B. <input id=”txtValue” type=”text” pattern=”[A-Za-z]{3}” />
C. <input id=”txtValue” type=”required” />
D. <input id=”txtValue” type=”required” autocomplete=”on” />

Answer: A


You are developing a customer web form that includes the following HTML.<label id=”txtValue”X/label>Information from the web form is submitted to a web service. The web service returns the following JSON object.{“Confirmation”: “1234”, “FirstName”: “John”}You need to display the Confirmation number from the JSON response in the txtValue label field. Which JavaScript code segment should you use?

A. $(“#txtValue”).val = (JSONObject.Confirmation);
B. 
$(“#txtValue”).val(JSONObject.Confirmation);
C. 
$(“#txtValue”).text = (JSONObject.Confirmation);
D. 
$(“#txtValue”).text(JSONObject.Confirmation);

Answer: D


You are developing a customer contact form that will be displayed on a page of a company’s website. The page collects information about the customer. If a customer enters a value before submitting the form, it must be a valid email address. You need to ensure that the data validation requirement is met. What should you use?

A. <input name=”email” type=”url”/>
B. <input name=”email” type=”text” required=”required”/>
C. <input name=”email” type=”text”/>
D. <input name=”email” type=”email”/>

Answer: D


You work as a developer at ABC.com. The ABC.com network consists of a single domain named ABC.com. You make use of CSS3 and HTML5 for development purposes.You are in the process of creating a web page for ABC.com. The page will contain a slider control for users to select their age. The slider control should not allow for the selection of ages 17 and below, or ages 66 and above.Which of the following describes what your input type should be?

A. Range

B. Button

C. Selection

D. Text

E. Collection

Answer: A


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