NOTE: this recruitment drive is also recruiting scientist for NTRO(National Technical Research Org, a newly started private R&D in same field). NTRO has requested ISRO to recruit some candidates for it. Toppers will be absorbed by ISRO and later students will be offered NTRO. before interview you will be asked about whether you want yourself to be considered for NTRO also or not.
There were 8 person in panel and only one panel was there. there was a long round table between candidate and interviewers so we have to explain everything on board.
They asked about GATE score card ,percentile, why did not went for M.Tech. If you are doing M.Tech. or Job they may ask questions in your specialization
Tell about your project
Then some questions regarding project
Favourite subjects ( I said DSA, C and DBMS . I didn,t said OS because for OS they were asking w.r.t. Linux. In CN they may also ask general about Network Security ,firewall, encryption etc. CA include Digital, Microprocessor etc)
They are giving everybody a question from mathematics to solve on board, mostly to find the rank of matrix, solving linear equation (some tricky which can be answered without solving it properly) or probability.
They may give a K - Map to solve on board
In C(i told C as My favourite subject) they ask me about extern, static, linking, global variables, run time library , exit etc.
In DSA they ask me about ex-pression evaluation infix ,postfix, how ex-pression is evaluated etc
Solve the equation x+y=5 ; 4x+4y=12; x+2y+3Z=20 .Answer: no solution since first two are contradicting so not possible
Some Other info about Interview
Mostly interview is on basics not deep into subject
1.In CS at Ahmedabad On 12 Sept only one out of 37 was asked about the project but on 13 everybody was asked about project2.They are asking some very basic questions from Digital like K-map solving , gates etc
3.Generally DBMS was not asked