Markup and Web Languages

The correct syntax for declaring the XML version is . It must start with without a closing slash.

XML requires all elements to be properly closed with matching end tags (or self-closed for empty elements). This well-formedness rule is mandatory for valid XML. DTDs are optional, and XML is case-sensitive but doesn't mandate lowercase.

XSL stands for eXtensible Stylesheet Language. It is a family of recommendation languages used to transform and render XML documents.

XML has strict syntax rules: elements must be properly nested (no crossing boundaries), tags are case-sensitive ( != ), and every well-formed XML document must have exactly one root element that contains all other elements. Since all individual statements A, B, and C are correct, option D is the right choice.

The XML document is NOT well-formed because attribute values must be enclosed in quotes. The attribute 'age=29' should be written as 'age="29"' or "age='29'". All XML attributes require quoted values, making this document invalid.

XML element names cannot start with a number or a punctuation character. Therefore, <2Dollar> is invalid because it begins with the digit '2'.

XML element names cannot contain spaces (), cannot start with the letters 'xml' in any case combination (), and cannot start with a number (<10paise>). Thus, all three are incorrect.

To solve this question, the user needs to know about the different ways to indicate that certain sections of an XML document should be ignored by the parser.

Option A is incorrect because the syntax is not correct. The correct syntax for CDATA sections is

Option B is correct. is used to indicate that the enclosed text should be treated as character data and ignored by the parser.

Option C is incorrect because PCDATA is used to indicate that the enclosed text contains only character data and should be parsed as such. It does not indicate that the text should be ignored.

Option D is incorrect because the correct syntax for CDATA sections is , not ...

Therefore, the correct answer is:

The Answer is: B.

SAX (Simple API for XML) is an event-based XML parser that reads XML sequentially and triggers events (startElement, endElement, characters) as it encounters tags. DOM builds a tree in memory, JAXP is an API, and JAXB is for XML-Java binding.

XSLT documents are indeed well-formed XML that define transformation rules. They require: (1) an XML input document to transform, and (2) an XSLT processing engine to apply the transformation. The statement accurately describes XSLT fundamentals.

All three statements about CDATA are correct: (1) CDATA contains unparsed character data, (2) the string ']]>' cannot appear because it marks the end of CDATA, and (3) CDATA sections cannot be nested within each other.

All the listed technologies (XHTML, WSDL, WAP/WML, RSS, RDF/OWL, SMIL) are built using XML syntax. XHTML reformulates HTML in XML, WSDL defines web services using XML, WML is WAP's markup language in XML, RSS feeds use XML, RDF/OWL are XML-based semantic web languages, and SMIL describes multimedia in XML format.

XML comments follow the same syntax as HTML and SGML comments. They start with . This is the standard way to add comments that XML parsers ignore during processing.

A well-formed XML document must satisfy ALL the listed rules: exactly one root element, all tags properly closed (including empty elements), proper nesting hierarchy, case-sensitive tag names, and quoted attribute values. Any violation makes the document malformed.

All four statements are correct. DTDs provide a validation framework, are plain text files, outline elements/attributes, and are specified in the XML document's DOCTYPE declaration.