Connect with fellow learners in the PlacePrep Discord communityㆍ Join now →

R's PlacePrep

Popular drives

TCSNQT (National Qualifier Test)InfosysIRT (InfyTQ Recruitment Test)AccentureCognitive & Technical Assessment

Also hiring

WiproNLTH (National Level Talent Hunt)CognizantGenC Assessment CapgeminiGame-Based Assessment

Browse all 14 companies TCS NQT 2026

Real placement papers from the drives you are actually sitting for

14 companies · 48 papersStart practising

Select your branch

Computer Science & EngineeringBEU previous year papers and solutions Mechanical EngineeringBEU previous year papers and solutions Electrical & Electronics EngineeringBEU previous year papers and solutions

More branches

Civil EngineeringBEU previous year papers and solutions Aeronautical EngineeringBEU previous year papers and solutions

All branches Computer Science

Previous year questions

University papers, sorted by subject and year with worked solutions

BEU Solved PapersOpen the archive

Core CS

Data Structures & AlgorithmsComplexity analysis up to graphs and DP.Operating SystemsProcesses, scheduling, memory and concurrency.Database Management SystemsRelational modelling, transactions and indexing.Computer NetworksFrom wires and radio waves up to the web.

Learn & scale

AI Inference EngineeringQuantization, batching and KV caching in production.System DesignScalable systems from first principles.Context EngineeringDesigning the context that LLMs actually reason over.Docker & KubernetesContainers and orchestration, explained.

All 15 courses Authors

Structured courses that start at zero and end somewhere useful

15 courses · free foreverBrowse courses

Companies PYQ Learn

Computer Organization & Architecture

Foundations of Computing7

Instruction Set Architecture5

Datapath & Control Unit4

Instruction Pipelining4

Pipelining: doing laundry for four people at once
Data hazards: when the next instruction needs a value that isn't ready yet
Control hazards: when the pipeline doesn't even know what to fetch next
Measuring pipeline performance, and going beyond one instruction per cycle

Memory Hierarchy7

I/O Interfaces & Interrupts5

Boot to Execution: The Full System Trace5

Lessons

Contribute, invite only

Computer Organization & Architecture

Foundations of Computing7

Instruction Set Architecture5

Datapath & Control Unit4

Instruction Pipelining4

Pipelining: doing laundry for four people at once
Data hazards: when the next instruction needs a value that isn't ready yet
Control hazards: when the pipeline doesn't even know what to fetch next
Measuring pipeline performance, and going beyond one instruction per cycle

Memory Hierarchy7

I/O Interfaces & Interrupts5

Boot to Execution: The Full System Trace5

Learn Computer Organization & Architecture Instruction Pipelining

Contribute, invite only

Control hazards: when the pipeline doesn't even know what to fetch next

Branches don't just delay a value like data hazards do - they delay knowing which instruction comes next at all. Here's how stalling, delay slots and branch prediction each deal with that.

12 min readUpdated 2026-09-03computer-architecturepipeliningbranch-predictioncontrol-hazards