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70-480 exam questions, 70-480 PDF dumps; 70-480 exam dumps:: https://www.dumpsschool.com/70-480-exam-dumps.html (241 Q&A) (New Questions Are 100% Available! Also Free Practice Test Software!)

Latest and Most Accurate Microsoft 70-480 Dumps Exam Questions and Answers:

Version: 16.0
Question: 21

You are developing a web application that consumes services from a third-party application. A web worker processes the third-party application requests in the background. A page in the application instantiates the web worker process.
You need to establish two-way communications between the web worker process and the page.
Which two actions will achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A. From the web worker, use the onconnect event handler of the main page to capture events.
B. From the main page, use the onmessage event handler of the web worker to capture events.
C. From the web worker, use the onmessage event handler of the main page to capture events.
D. From the main page, use the onconnect event handler of the web worker to capture events.

Answer: B, C

* When postMessage() is called from the main page, our worker handles that message by defining an onmessage handler for the message event.
* Server-Sent Events – One Way Messaging
A server-sent event is when a web page automatically gets updates from a server.
Receive Server-Sent Event Notifications
The EventSource object is used to receive server-sent event notifications:
Example
var source = new EventSource(“demo_sse.php”);
source.onmessage = function(event) {
document.getElementById(“result”).innerHTML += event.data + ”
“;
};
Reference:
http://www.w3schools.com/html/html5_serversentevents.asp
http://www.html5rocks.com/en/tutorials/workers/basics/

Question: 22

You are developing an HTML5 web application that displays customer mailing address information.
The application loads addresses from a web service by using AJAX. The following code defines a Customer object and loads address data.

You need to implement the loadAddress function.
Which code segment should you use?

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

Answer: C

Question: 23

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.
B.
C.
D.

Answer: D

Example:

E-mail:

Reference:
http://www.w3schools.com/html/html5_form_input_types.asp

Question: 24

You are developing a customer web form that includes the following HTML.

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

Answer: D

Incorrect:
not A, not B: A label object has no value attribute.
Reference:
http://api.jquery.com/text/

Question: 25

You are developing an application that consumes a Windows Communication Foundation (WCF) service.
The application interacts with the service by using the following code. (Line numbers are included for reference only.)

You need to authenticate to the WCF service.
What should you do?

A. At line 11, add the following lines of code.
,username: yourusername
,password: yourpassword
B. At line 11, add the following line of code.
,credentials: prompt
C. At line 06, replace the code with the following line of code.
url: “http://contoso.com/Service.svc/GetCountry?
Username=username&password=password”,
D. At line 11, add the following line of code. The username and password will be stored in an XML file.
,credentials: credentials.xml

Answer: C

Question: 26

You are developing a web page that enables customers to upload documents to a web server. The page includes an HTML5 PROGRESS element named progressBar that displays information about the status of the upload.
The page includes the following code. (Line numbers are included for reference only.)

An event handler must be attached to the request object to update the PROGRESS element on the page.
You need to ensure that the status of the upload is displayed in the progress bar.
Which line of code should you insert at line 03?

A. xhr.upload.onloadeddata =
B. xhr.upload.onplaying =
C. xhr.upload.onseeking =
D. xhr.upload.onprogress =

Answer: D

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