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GATE CSE 2016 Set 2 | Question: 19

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Match the following:$$\begin{array}{ll|ll}\hline \text{(P)} & \text{Lexical analysis} & \text{(i)} & \text{Leftmost derivation} \\\hline  \text{(Q)} & \text{Top down parsing} & \text{(ii)}& \text{Type checking} \\\hline   \text{(R)}& \text{Semantic analysis} & \text{(iii)}  & \text{Regular expressions} \\\hline  \text{(S)} & \text{Runtime environment} &\text{(iv)}  & \text{Activation records}  \\\hline \end{array}$$

  1. $\text{P $\leftrightarrow$ i, Q $\leftrightarrow$ ii, R $\leftrightarrow$ iv, S $\leftrightarrow$ iii}$
  2. $\text{P $\leftrightarrow$ iii, Q $\leftrightarrow$ i, R $\leftrightarrow$ ii, S $\leftrightarrow$ iv}$
  3. $\text{P $\leftrightarrow$ ii, Q $\leftrightarrow$ iii, R $\leftrightarrow$ i, S $\leftrightarrow$ iv}$
  4. $\text{P $\leftrightarrow$ iv, Q $\leftrightarrow$ i, R $\leftrightarrow$ ii, S $\leftrightarrow$ iii}$
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Correct Option: B

  • Lexical Analysis phase uses regular expressions.
  • LMD is involved in top down parsing.
  • Type checking is done in semantic analysis phase.
  • Activation records are related to Run Time Environments.
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