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Q53

MCQ2 marks, −0.5

A single tape Turing Machine MM has two states q0q0 and q1q1, of which q0q0 is the starting state. The tape alphabet of MM is {0,1,B}\{0, 1, B\} and its input alphabet is {0,1}\{0, 1\}. The symbol BB is the blank symbol used to indicate end of an input string. The transition function of MM is described in the following table.

01Bq0q1,1,Rq1,1,RHaltq1q1,1,Rq0,1,Lq0,B,L\begin{array}{|l|l|l|l|}\hline \text{} & \text{$0$} & \text{$1$} & \text{$B$} \\\hline \text{$q0$} & \text{$q1, 1, R$} & \text{$q1, 1, R$} & \text{$Halt$} \\\hline \text{$q1$} & \text{$q1, 1, R$} & \text{$q0, 1, L$} & \text{$q0, B, L$} \\\hline \end{array}

The table is interpreted as illustrated below. The entry (q1,1,R)(q1, 1, R) in row q0q0 and column 11 signifies that if MM is in state q0q0 and reads 11 on the current page square, then it writes 11 on the same tape square, moves its tape head one position to the right and transitions to state q1q1. Which of the following statements is true about MM?

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