When a __________ form is displayed, no other form in the application can receive the focus until the form is closed.

DSL and dial-up Internet access both connect to an ISP over a phone line and both operate at the same speed

Indicate whether the statement is true or false

A(n) _____ is a collection of rules that define the content and structure of an XML document.

A. data structure B. DTD C. XMLNS D. validity glossary