* IBM to offer mobile security as a service IBM will start delivering mobile security-as-a-service (MaaS) through its own cloud infrastructure in India, a move that is expected to better address in-country data requirements... IBM Spectrum Computing: IBM has enlarged its portfolio of software-defined infrastructure solutions with cognitive features for workload management.  * LiFi internet technology has been introduced, the new type of wireless internet connection that gives 100 times faster than traditional WiFi -- Invented by Professor Harald Haas from the University of Edinburgh. * Sci. Rachid Yazami has developed a smart chip that charges smartphones in less than 10 minutes. BenQ has launched BlueCore projector - Consumer electronics major BenQ has launched its first BlueCore laser light source projector. For those unaware, devices with BlueCore laser technology have a high contrast output of 80000:1 with an extended lamp life and efficiency. *** 
Category - XML, XSL, XSLT, SOAP, WSDL Interview Questions
1. What is XML?
  • Extensible Markup Language (XML) is the universal language for data on the Web
  • XML is a technology which allows us to create our own markup language.
  • XML documents are universally accepted as a standard way of representing information in platform and language independent manner.
  • XML is universal standard for information interchange.
  • XML documents can be created in any language and can be used in any language.

2. What is the difference between XML and HTML?
XML is no way clashes with HTML, since they are for two different purposes. 
  • HTML is for displaying purpose. whereas  XML is for data representation.
  • HTML is used to mark up text so it can be displayed to users. XML is used to mark up data so it can be processed by computers.
  • HTML describes both structure (e.g. <p>, <h2>, <em>) and appearance (e.g. <br>, <font>, <i>) XML describes only content, or “meaning”
  • HTML uses a fixed, unchangeable set of tags In XML, you make up your own tags

3. What are the benefits of XML?
There are many benefits of using XML on the Web :
  • Simplicity
  • Openness
  • Extensibility
  • Self-description
  • Contains machine-readable context information
  • Separates content  from presentation
  • Supports multilingual documents and Unicode
  • Facilitates the comparison and aggregation of data
  • Can embed multiple data types
  • Can embed existing data 
  • Provides a 'one-server view' for distributed data

4. What is a well-formed XML document?
If a document is syntactically correct it can be called as well-formed XML documents. A well-formed document conforms to XML's basic rules of syntax:
  • Every open tag must be closed.
  • The open tag must exactly match the closing tag: XML is case-sensitive.
  • All elements must be embedded within a single root element.
  • Child tags must be closed before parent tags.
  • A well-formed document has correct XML tag syntax, but the elements might be invalid for the specified document type.

5. What is a valid XML document?
If a document is structurally correct then it can be called as valid XML documents. A valid document conforms to the predefined rules of a specific type of document:
  • These rules can be written by the author of the XML document or by someone else.
  • The rules determine the type of data that each part of a document can contain.
  • Note:Valid XML document is implicitly well-formed, but well-formed may not be valid

6. What is DTD?
A Document Type Definition (DTD) defines the legal building blocks of an XML document. It defines rules for a specific type of document, including:
  • Names of elements, and how and where they can be used
  • The order of elements
  • Proper nesting and containment of elements
  • Element attributes
To apply a DTD to an XML document, you can:
  • Include the DTD's element definitions within the XML document itself.
  • Provide the DTD as a separate file, whose name you reference in the XML document.

7. What is a Complex Element?
A complex element is an XML element that contains other elements and/or attributes.
There are four kinds of complex elements:
  • empty elements
  • elements that contain only other elements
  • elements that contain only text
  • elements that contain both other elements and text

8. 13.What is a Simple Element?
  • A simple element is an XML element that can contain only text.
  • A simple element cannot have attributes
  • A simple element cannot contain other elements
  • A simple element cannot be empty
  • However, the text can be of many different types, and may have various restrictions applied to it

9. What are the features of XML?
Main features of XML are:
  • Very easy to learn and implement
  • XML files are text files, and no editor is required
  • Minimal and a limited number of syntax rules in XML
  • It is extensible, and it specifies that structural rules of tags

10. What are the advantages of XML DOM Document?
Advantages of XML DOM:
  • XML structure is traversable, and it can be randomly accessed by traversing the tree.
  • XML structure is modifiable, and values can be added, changed and removed

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