Yes, NATA is an entrance exam for Architecture. Admission will be based on percentage in 12th and score in entrance exams such as NATA or JEE Main. No candidate with less than 50% marks in aggregate shall be admitted to the architecture course unless he/she has passed an examination at the end of the new 10+2 scheme of Senior School Certificate Examination or equivalent with Mathematics as subjects of examination at the 10+2 level or 10+3 Diploma (any stream) recognized by Central/State Governments with 50% aggregate marks or International Baccalaureate Diploma, after 10 years of schooling with not less than 50% marks in aggregate and with Mathematics as compulsory subject of examination. Pass in NATA exam I. e 80 marks out of 200. 

50% marks in 10+2 with mathematics as compulsory subject. 
2. JEE Mains PAPER - 2 Architecture exam - lets you get admission in IITs, National Institutes of Technology and other Government colleges. Bachelor of Architecture: Top Institutes with their fee structure
Centre for Environmental Planning & TechnologyAhmedabad- INR. 1, 61,000
Lovely Professional University INR. 19,500
Jadavpur UniversityKolkata INR. 2,730
School of Planning & Architecture Delhi INR. 46,300.

Average fees for this course in government colleges ranges from INR 1.5 to 2.5 Lacs and in private institutes, it ranges from approximately. INR 2.5 to 5 Lacs. After the successful completion of this course, the students can pursue their career in the architecture sector with the average salary range between INR 2.5 to 5 LPA.