XML Interview Questions & Answers
Showing 10 of 40 questions | Page 3
Technical interview questions and answers are crucial in XML Interviews because XML is widely used for data storage, configuration, API communication, and document structuring. Many companies use XML as a standard format in web applications, making it an important topic in technical interviews. Companies like TCS, Wipro, Infosys, Cognizant, and Accenture often ask XML questions to check whether candidates understand syntax, DTD, XSD, parsing, and real-time use cases. This guide provides fully solved XML interview questions with simple explanations suitable for freshers, students, and job seekers. These questions will help you perform confidently in technical rounds and placement interviews.
Web developers working with markup languages should strengthen their foundation in HTML structure and XHTML standards for document formatting
Showing 10 of 40 questions
21. Can I (and my authors) still use client-side inclusions?
The same rule applies as for server-side inclusions, so you need to ensure that any embedded code which gets passed to a third-party engine (eg calls to SQL, VB, Java, etc) does not contain any characters which might be misinterpreted as XML markup (ie no angle brackets or ampersands). Either use a CDATA marked section to avoid your XML application parsing the embedded code, or use the standard <, and & character entity references instead.
22. Do XML namespaces apply to entity names, notation names, or processing instruction targets?
No.
XML namespaces apply only to element type and attribute names. Furthermore, in an XML document that conforms to the XML namespaces recommendation, entity names, notation names, and processing instruction targets must not contain colons.
23. Who can create an XML namespace?
Anybody can create an XML namespace -- all you need to do is assign a URI as its name and decide what element type and attribute names are in it. The URI must be under your control and should not be being used to identify a different XML namespace, such as by a coworker.
(In practice, most people that create XML namespaces also describe the element types and attributes whose names are in it -- their content models and types, their semantics, and so on. However, this is not part of the process
24. Where can I declare an XML namespace?
You can declare an XML namespace on any element in an XML document. The namespace is in scope for that element and all its descendants unless it is overridden.
25. How can I declare XML namespaces so that all elements and attributes are in their scope?
XML namespace declarations that are made on the root element are in scope for all elements and attributes in the document. This means that an easy way to declare XML namespaces is to declare them only on the root element
26. Does the scope of an XML namespace declaration ever include the DTD?
No.
XML namespaces can be declared only on elements and their scope consists only of those elements and their descendants. Thus, the scope can never include the DTD.
27. Do XML namespace declarations apply to DTDs?
No.
In particular, an xmlns attribute declared in the DTD with a default is not an XML namespace declaration for the DTD.. (Note that an earlier version of MSXML (the parser used by Internet Explorer) did use such declarations as XML namespace declarations, but that this was removed in MSXML 4.
28. How do I create documents that use XML namespaces?
The same as you create documents that don't use XML namespaces. If you're currently using Notepad on Windows or emacs on Linux, you can continue using Notepad or emacs. If you're using an XML editor that is not namespace-aware, you can also continue to use that, as qualified names are legal names in XML documents and xmlns attributes are legal attributes. And if you're using an XML editor that is namespace-aware, it will probably provide features such as automatically declaring XML namespaces an
29. What software is needed to process XML namespaces?
From a document author's perspective, this is generally not a relevant question. Most XML documents are written in a specific XML language and processed by an application that understands that language. If the language uses an XML namespace, then the application will already use that namespace -- there is no need for any special XML namespace software.
30. What does a namespace-aware application do when it encounters an error?
The XML namespaces recommendation does not specify what a namespace-aware application does when it encounters a document that does not conform to the recommendation. Therefore, the behavior is application-dependent. For example, the application could stop processing, post an error to a log and continue processing, or ignore the error.
PART III: NAMES, PREFIXES, AND URIs