If the validating parser outputs "not valid" during the validating process, what does this mean?

Which is an empty element tag?

XML Namespaces provide a method to avoid element name conflicts. Which is a correct way to declare namespaces in a valid XML document.

You can refine an external XSD schema inside of an XML file, as you can with a DTD.

In an XML schema, to limit a user-defined type to a set of pre-defined options, you would use:

Which is NOT a schema language?

The use of a DTD in XML development is:

Select a correctly written XML declaration:

How would you write a valid CDATA section?

How does a XML document store a new line?

Suppose you have the following XML code:- Giada De Laurentiis 2005 30.00 Erik T. Ray 2003 39.95 What will be the XPath to Selects all the title elements that have a 'lang' attribute with a value of 'en'?