Given below are two statements
Statement I: The family of context free languages is closed under homomorphism.
Statement II: The family of context free languages is closed under reversal.
In light of the above statements, choose the correct answer from the options given below.
Previous 10 Questions — UGC NET Computer Science Nov 2021 (Paper II)
Nearest first
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Let$L_1=\{0^n1^n0^m\mid n\ge 1,\ m\ge 1\}$$L_2=\{0^n1^m0^m\mid n\ge 1,\ m\ge 1\}$$L_3=\{0^n1^n0^n\mid n\ge 1\}$Which of…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Any string of terminals that can be generated by the following context-free grammar, where $S$ is start nonterminal sym…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Which of the following languages are not regular?A. $L=\{(01)^n0^k\mid n>k,\ k\ge 0\}$B. $L=\{c^nb^ka^{n+k}\mid n\ge…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Consider the following linear optimization problem:Maximize $Z=6x+5y$Subject to $2x-3y\le 5$$x+3y\le 11$$4x+y\le 15$and…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Let $(X,*)$ be a semigroup. Furthermore, for every $a$ and $b$ in $X$, if $a\ne b$, then $a*b\ne b*a$.Based on the defi…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Match List I with List IIList IList IIA. $x+x=x$I. Identity LawB. $x+0=x$II. Absorption LawC. $x+1=1$III. Idempotent La…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Which of the following Graphs is(are) planar?
Topic: UGC NET Computer Science Nov 2021 (Paper II)
For which value of $n$ is Wheel graph $W_n$ regular?
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Let us assume a person climbing the stairs can take one stair or two stairs at a time. How many ways can this person cl…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
A company stores products in a warehouse. Storage bins in this warehouse are specified by their aisle, location in the …
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Next 10 Questions — UGC NET Computer Science Nov 2021 (Paper II)
Ascending by ID
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What is the minimum number of states required to the finite automaton equivalent to the transition diagram given below?
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Find the regular expression for the language accepted by the automata given below.
Topic: UGC NET Computer Science Nov 2021 (Paper II)
What language is accepted by the pushdown automaton$M=({q_0,q_1,q_2},\{a,b\},\{a,b,z\},\delta,q_0,z,\{q_2\})$with…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Match List I with List IIList IList IIA. $S\to XY,\ X\to 0,\ Y\to 1$I. Greibach Normal FormB. $S\to aS\mid bSS\mid c$II…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Which of the following concepts can be used to identify loops?A. Depth first orderingB. DominatorsC. Reducible graphsCh…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Given below are two statementsStatement I: LL(1) and LR are examples of Bottom-up parsers.Statement II: Recursive desce…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
The postfix form of the expression $(A+B)*(C*D-E)*F/G$ is ______
Topic: UGC NET Computer Science Nov 2021 (Paper II)
A double-ended queue (deque) supports adding and removing items from both ends of the queue. The operations supported b…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
Two balanced binary trees are given with $m$ and $n$ elements, respectively. They can be merged into a balanced binary …
Topic: UGC NET Computer Science Nov 2021 (Paper II)
A data structure is required for storing a set of integers such that each of the following operations can be done in $O…
Topic: UGC NET Computer Science Nov 2021 (Paper II)
