The short answer
NATA is the architecture-specific aptitude test; JEE Paper 2 is required for NITs, SPA Delhi and several central institutions.
NATA is accepted by a large number of private and state architecture colleges and tests aptitude for design, drawing and observation. JEE Main Paper 2 is the route to centrally funded institutions such as the NITs and Schools of Planning and Architecture.
Many candidates take both, since the choice often comes down to which colleges you can realistically reach. Check each college’s current admission requirement rather than relying on older brochure information.
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