A data ______ contains data about each file in the database and each field in those files.

Which of the following statements deletes the first node of a linear linked list that has 10 nodes?

a) head.setNext(curr.getNext()); b) prev.setNext(curr.getNext()); c) head = head.getNext(); d) head = null;

Many programs today use ______ on a webpage as their front end.

A. landing pages B. PDF documents C. forms D. spreadsheets