Question 5117 – UGC NET CS 2018 JUNE Paper-2

→ A XML document is said to be well- formed if it have correct syntax like tags are case sensitive, elements must have closing tags, elements must be properly nested etc.
→ But when when associate a well formed XML document with a DTD( in which we define the structure of a document) and if that XML document validates all the definitions defined in DTD then that XML document is called as “valid” XML document.
→ Always remember that a “valid” XML document is also a “well-formed” XML document but a “well-formed” XML document is not necessarily a “valid” XML document
→ In question, it is mentioned that XML document is validating the definitions in the DTD. so the answer is option (3).