1

GATE CSE 2007

MCQ (Single Correct Answer)

+2

-0.6

The language $$L = \left\{ {{0^i}{{21}^i}\,|\,i \ge 0} \right\}$$ over the alphabet $$\left\{ {0,1,2} \right\}$$ is

2

GATE CSE 2007

MCQ (Single Correct Answer)

+2

-0.6

Consider the $$CFG$$ with $$\left\{ {S,A,B} \right\}$$ as the non-terminal alphabet, $$\left\{ {a,b} \right\}$$ as the terminal alphabet, $$S$$ as the start symbol and the following set of production rules:

Which of the following strings is generated by the grammar?

3

GATE CSE 2006

MCQ (Single Correct Answer)

+2

-0.6

Consider the following statements about the context-free grammar

$$G = \left\{ {S \to SS,\,S \to ab,\,S \to ba,\,S \to \varepsilon } \right\}$$

$$1.$$ $$G$$ is ambiguous

$$2.$$ $$G$$ produces all strings with equal number of $$a's$$ and $$b's$$

$$3.$$ $$G$$ can be accepted by a deterministic $$PDA$$.

$$G = \left\{ {S \to SS,\,S \to ab,\,S \to ba,\,S \to \varepsilon } \right\}$$

$$1.$$ $$G$$ is ambiguous

$$2.$$ $$G$$ produces all strings with equal number of $$a's$$ and $$b's$$

$$3.$$ $$G$$ can be accepted by a deterministic $$PDA$$.

Which combination below expresses all the true statements about $$G?$$

4

GATE CSE 2005

MCQ (Single Correct Answer)

+2

-0.6

Let $${N_f}$$ and $${N_p}$$ denote the classes of languages accepted by non-deterministic finite automata and non-deterministic push-down automata, respectively. Let $${D_f}$$ and $${D_p}$$ denote the classes of languages accepted by deterministic finite automata and deterministic push-down automata, respectively. Which one of the following is TRUE?

Questions Asked from Push Down Automata and Context Free Language (Marks 2)

Number in Brackets after Paper Indicates No. of Questions

GATE CSE 2024 Set 2 (1)
GATE CSE 2024 Set 1 (1)
GATE CSE 2021 Set 1 (4)
GATE CSE 2020 (1)
GATE CSE 2018 (1)
GATE CSE 2016 Set 1 (1)
GATE CSE 2015 Set 3 (1)
GATE CSE 2014 Set 3 (1)
GATE CSE 2013 (1)
GATE CSE 2011 (2)
GATE CSE 2010 (1)
GATE CSE 2008 (3)
GATE CSE 2007 (3)
GATE CSE 2006 (1)
GATE CSE 2005 (3)
GATE CSE 2004 (3)
GATE CSE 2000 (1)
GATE CSE 1999 (1)
GATE CSE 1998 (2)
GATE CSE 1997 (1)
GATE CSE 1996 (2)
GATE CSE 1994 (1)
GATE CSE 1992 (1)
GATE CSE 1989 (1)
GATE CSE 1987 (2)

GATE CSE Subjects

Discrete Mathematics

Programming Languages

Theory of Computation

Operating Systems

Computer Organization

Database Management System

Data Structures

Computer Networks

Algorithms

Compiler Design

Software Engineering

Web Technologies

General Aptitude