Case 2-1
Casey is using XML to store information about the students in the science classes that he teaches. He wants to design a DTD that he can use to validate the XML documents that he uses for this purpose, and he comes to you for help.
-You tell Casey that he must declare the DTD using a DOCTYPE statement. Where should the DOCTYPE go?
A) before the XML declaration
B) within the XML declaration
C) after the XML declaration and before the document's root element
D) after the document's root element

Question

Quizplus · Accepted Answer

The DOCTYPE declaration should come after the XML declaration and before the document's root element. This allows the XML parser to identify the DTD and validate the document against it. Placing it before or within the XML declaration is incorrect syntax, and placing it after the document's root element is too late for it to have any effect on the validation process.

Case 2-1 Casey Is Using XML to Store Information About the Students