Web Technology Questions

Q:

What is the correct JavaScript syntax to write “Hello World”?

A) System.out.println("Hello World") B) println ("Hello World")
C) document.write("Hello World") D) response.write("Hello World")
 
Answer & Explanation Answer: C) document.write("Hello World")

Explanation:
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Q:

Which of the following can't be done with client-side JavaScript?

A) Sending a form's contents by email B) Storing the form's contents to a database file on the server
C) Validating a form D) None of the above
 
Answer & Explanation Answer: B) Storing the form's contents to a database file on the server

Explanation:
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Q:

Which class provides an interface for invoking JavaScript methods and examining JavaScript properties.

A) ScriptObject B) JSObject
C) JavaObject D) Jobject
 
Answer & Explanation Answer: B) JSObject

Explanation:
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Q:

What is DHTML? What are the features of DHTML?

Answer

DHTML stands for Dynamic HTML. The first thing that we need to clear about DHTML is that it is neither a language like HTML, JavaScript etc. nor a web standard. It is just a combination of HTML, JavaScript and CSS. It just uses these languages features to build dynamic web pages. DHTML is a feature of Netscape Communicator 4.0, and Microsoft Internet Explorer 4.0 and 5.0 and is entirely a "client-side" technology.  


Features of DHTML:


- Simplest feature is making the page dynamic.


- Can be used to create animations, games, applications, provide new ways of navigating through web sites.


- DHTML use low-bandwidth effect which enhance web page functionality.


- Dynamic building of web pages is simple as no plug-in is required.


- Facilitates the usage of events, methods and properties and code reuse. 

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Q:

Explain electronic payment procedure.

Answer

- The merchant submits a credit card transaction to the Payment Gateway on behalf of a customer via secure connection from a Web site, at retail, from a MOTO center or a wireless device. 


- Payment Gateway receives the secure transaction information and passes it via a secure connection to the Merchant Bank’s Processor. 


- The Merchant Bank’s Processor submits the transaction to the Credit Card Interchange (a network of financial entities that communicate to manage the processing, clearing, and settlement of credit card transactions). 


- The Credit Card Interchange routes the transaction to the customer’s Credit Card Issuer. 


- The Credit Card Issuer approves or declines the transaction based on the customer’s available funds and passes the transaction results, and if approved, the appropriate funds, back through the Credit Card Interchange. 


- The Credit Card Interchange relays the transaction results to the Merchant Bank’s Processor. 


- The Merchant Bank’s Processor relays the transaction results to Payment Gateway. 


- Payment Gateway stores the transaction results and sends them to the customer and/or the merchant. This communication process averages three seconds or less. 


- The Credit Card Interchange passes the appropriate funds for the transaction to the Merchant’s Bank, which then deposits funds into the merchant’s bank account. The funds are typically deposited into your primary bank account within two to four business days.

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