Question 17

____ are symbols used to distinguish between parts of a rule.

		Distinguishers
		Identifiers
		Metasymbols
		Abstract characters

1 points

Question 18

Productions are in Backus-Naur form if they are given using only the metasymbols < and >.

True

False

1 points

Question 19

A context-free grammar consists of a series of ____.

		grammar rules
		positional rules
		semantic rules
		algebraic expressions

1 points

Question 20

A ____ is the standard graphical depiction of syntax-directed semantics.

		flow chart
		UML diagram
		chained list
		parse tree