MCS-202 IGNOU Guess Paper 2026-27

MCS-202 (Computer Organisation) Term-End Exam (TEE) Guess Paper

This structured guess paper is designed to align with the official IGNOU curriculum for MCS-202, covering critical blocks from previous year papers and high-scoring topics. It includes chapter-wise question weightage, time management tips, and solved-style questions based on June & Dec TEE sessions (2018–2023).

Key Syllabus Blocks Covered

• Block-1: Data Representation and Logic Circuits
  • Binary, decimal, octal, and hexadecimal conversions with arithmetic operations.
  • Logic gates (AND, OR, NOT, XOR, NAND, NOR) and Boolean algebra simplification.
  • Karnaugh maps and design of combinational circuits (e.g., half/full adders).
• Block-2: Memory and I/O Organisation
  • Memory hierarchy: Registers Cache Main Memory Secondary Storage (HDD/SSD).
  • Addressing modes (direct, indirect, relative) and memory-mapped I/O.
  • RAID levels (0, 1, 5) and virtual memory concepts (paging/swapping).
• Block-3: The Processing Unit
  • CPU components: ALU, CU, registers (PC, MAR, MDR, PSW), and instruction execution cycles.
  • Pipelining and hazards (structural, data, control).
  • RISC vs. CISC architectures and their trade-offs.
• Block-4: Microprocessor and Advanced Architectures
  • 8085/8086 microprocessor architecture, addressing modes, and programming basics.
  • Multiprocessor and multiprocessor systems (SMP vs. MPP).
  • Vector processing and parallel computing fundamentals.

Exam Strategy and Time Management

• Allocate 45 minutes per block (e.g., 15 mins for Block-1, 15 mins for Block-2, etc.).
• Prioritize short-answer questions (SAQs) on logic gates, cache mapping, and ALU operations (2–3 marks each).
• For long-answer questions (LAQs) (10–15 marks), focus on:
  • Designing combinational circuits (Block-1).
  • Explaining memory hierarchy trade-offs (Block-2).
  • Comparing RISC/CISC or pipelining stages (Block-3).
• Avoid: Over-explaining basics (e.g., binary to decimal conversion) unless asked.

Frequently Asked Questions (FAQs)

• Q: Are previous year papers sufficient for TEE preparation?

  A: Yes, solving 3–5 years of previous year papers (June/Dec) helps identify recurring topics (e.g., cache replacement policies, 8085 programming snippets). Combine with textbook examples for deeper understanding.

• Q: How to score full marks in LAQs?

  Use diagrams (e.g., CPU pipeline stages, memory hierarchy) and step-by-step reasoning. For example, in Block-3, explain pipelining with a 5-stage diagram and highlight hazards. Always cite real-world examples (e.g., Intel’s out-of-order execution).

Note: This guess paper excludes theoretical-heavy topics (e.g., deep dives into Von Neumann architecture) unless they appear in recent TEE papers. Focus on practical applications (e.g., designing a 4-bit adder, explaining DMA transfer).