GATE CS Subject
Computer Organization and Architecture GATE CS Questions
- 229 questions in this subject
- Years covered: 1987-2026
- Topic: CPU Design
- Topic: Pipelining
- Topic: Memory Hierarchy
- Topic: Cache
- Topic: Instruction Set
- Topic: I/O Systems
Overview & Analysis
Computer Organization and Architecture (COA) is a core systems subject, contributing 6 to 8 marks. It bridges the gap between hardware gates and high-level programming structures.
The syllabus requires analyzing CPU instruction cycles, addressing modes, pipeline speedups, cache memory hits/misses, main memory organization, and direct memory access (DMA) configurations.
Frequently Asked Questions (FAQ)
Q: How is cache memory performance tested in GATE COA?
A: Questions usually test cache mapping techniques (direct, fully associative, set-associative), hit/miss ratio calculations, average memory access time (AMAT), and write policies (write-through/write-back).
Q: What is pipeline speedup and how do I calculate it?
A: Pipeline speedup is the ratio of time taken to execute a set of instructions non-pipelined vs. pipelined. Speedup S = Non-pipelined time / Pipelined time. In ideal cases with k stages, maximum speedup approaches k.
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