Understanding Regular Languages and CFGs

Understanding Regular Languages and CFGs

University

8 Qs

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Understanding Regular Languages and CFGs

Understanding Regular Languages and CFGs

Assessment

Quiz

Computers

University

Practice Problem

Easy

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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a regular language?

A regular language is a language that cannot be expressed using regular expressions.

A regular language is a language that can only be recognized by a context-free grammar.

A regular language is a language that requires a pushdown automaton for recognition.

A regular language is a language that can be represented by a regular expression and recognized by a finite automaton.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Define context-free grammar (CFG).

A context-free grammar consists only of terminal symbols.

A context-free grammar (CFG) is a formal grammar that generates a context-free language, consisting of a set of production rules that describe how to form strings from the language's lexicon

A context-free grammar is used exclusively for natural language processing.

A context-free grammar is a type of programming language.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Explain the role of production rules in a grammar.

Production rules are only applicable in programming languages, not natural languages.

Production rules are the fundamental building blocks of a grammar that specify how to generate strings in a language.

Production rules are a type of punctuation used in writing.

Production rules are used to define the meaning of words in a language.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the start symbol in a given CFG.

A

X

P

S

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are terminal and non-terminal symbols?

Non-terminal symbols represent actual data values.

Terminal symbols are only used in programming languages.

Terminal symbols are the actual content symbols, while non-terminal symbols are placeholders for patterns of terminal symbols.

Both terminal and non-terminal symbols are interchangeable.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is the language defined by "a^n b^n c^n" context-free? Why or why not?

No, the language defined by anbncn is not context-free.

Yes, the language defined by anbncn is context-free.

The language is context-free because it can be generated by a context-free grammar.

The language defined by anbncn is regular.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a syntax tree?

A syntax tree is a kind of maple variant.

A syntax tree is a tree representation of the syntactic structure of input sentences in respect to form.

A syntax tree is a list of all variables in the code.

A syntax tree defines a sentence's functionality

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