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Compiler Design (CD) AKTU PYQ analysis – unit-wise weightage

We analysed 283 questions from 12 AKTU Compiler Design papers (2017–2026). Here is how marks are spread across units and which topics keep coming back.

Compiler Design unit-wise weightage

  • Unit 1: Compiler Foundations, Lexical Analysis and Syntactic Specification – 33% of questions, about 22 marks per paper
  • Unit 2: Basic Parsing Techniques and Automatic Construction of Efficient Parsers – 41% of questions, about 32 marks per paper
  • Unit 3: Syntax-Directed Translation and Intermediate Code – 38% of questions, about 29 marks per paper
  • Unit 4: Symbol Tables, Run-Time Administration and Error Recovery – 34% of questions, about 25 marks per paper
  • Unit 5: Code Generation and Code Optimization – 36% of questions, about 25 marks per paper

Most repeated Compiler Design topics in AKTU PYQs

  • Finite State Machines and Regular Expressions for Lexical Analysis
  • Error Detection and Recovery
  • Compiler Phases and Passes
  • Data Structures for Symbol Tables
  • Quadruples and Triples

Unit 1 (Compiler Foundations, Lexical Analysis and Syntactic Specification) – top topics

  • Finite State Machines and Regular Expressions for Lexical Analysis – asked 19 times, last in 2026
  • Compiler Phases and Passes – asked 14 times, last in 2025
  • Ambiguity – asked 6 times, last in 2026

Unit 2 (Basic Parsing Techniques and Automatic Construction of Efficient Parsers) – top topics

  • Shift-Reduce Parsing – asked 9 times, last in 2026
  • Top-Down Parsing – asked 9 times, last in 2024
  • Predictive Parsers – asked 7 times, last in 2025

Unit 3 (Syntax-Directed Translation and Intermediate Code) – top topics

  • Quadruples and Triples – asked 11 times, last in 2026
  • Syntax-Directed Translation Schemes – asked 7 times, last in 2024
  • Intermediate Code – asked 7 times, last in 2026

Unit 4 (Symbol Tables, Run-Time Administration and Error Recovery) – top topics

  • Error Detection and Recovery – asked 15 times, last in 2026
  • Data Structures for Symbol Tables – asked 14 times, last in 2026
  • Implementation of Simple Stack Allocation Scheme – asked 9 times, last in 2024

Unit 5 (Code Generation and Code Optimization) – top topics

  • DAG Representation of Basic Blocks – asked 11 times, last in 2026
  • Loop Optimization – asked 8 times, last in 2024
  • Machine-Independent Optimizations – asked 7 times, last in 2026