MCS- -21- IGNOU Solved Assignment 2026-27

Solved Assignment for MCS-021: Computer Architecture and Organization (TMA)

This verified solution set is designed exclusively for IGNOU’s Master of Computer Applications (MCA) program, covering 30% course weightage with 100% plagiarism-free content. All answers comply with IGNOU’s word limits (500/250/100 words) and submission deadlines for the current session.

Key Syllabus Units Covered

• Unit 1: Introduction to Computer Architecture
  • Historical evolution of computer systems and their architectural paradigms.
  • Von Neumann architecture: Memory, CPU, and I/O components.
  • Solution: Compare and contrast Harvard and Von Neumann architectures (500 words).
• Unit 2: Instruction Set Architecture (ISA)
  • Registers, addressing modes, and instruction formats.
  • RISC vs. CISC architectures with case studies.
  • Solution: Analyze the trade-offs between RISC and CISC (250 words).
• Unit 3: CPU Design and Performance
  • Pipelining, superscalar, and VLIW architectures.
  • Performance metrics: CPI, clock cycles, and throughput.
  • Solution: Explain how pipelining reduces average execution time (250 words).
• Unit 4: Memory Hierarchy and Caching
  • Cache memory: Organization (direct-mapped, set-associative, fully associative).
  • Locality principles (temporal and spatial).
  • Solution: Describe the impact of cache hit/miss ratio on system performance (100 words).
• Unit 5: Input/Output Systems
  • I/O interfaces: DMA, interrupts, and I/O buses.
  • Solution: Compare interrupt-driven and DMA-based I/O (250 words).

Subject-Specific FAQs

• Q: How do I ensure my TMA answers align with IGNOU’s grading criteria?

  Use the official IGNOU study material for MCS-021 as a reference. Focus on defining key terms, comparing architectures, and explaining performance trade-offs with real-world examples.

• Q: Are diagrams allowed in the TMA?

  No. IGNOU’s TMA guidelines strictly require text-based answers only. However, you can describe diagrams