Placement Papers - ISRO

Hi Friends

I attending ISRO on 4th May at Hyderabad
CSE time 3 to 4.30

Total 80 questions all are Technical

Sample questions::
1.which is minimum error code? gray code
2.DBMS 3 simple questions
how many simple graphs are possible with 3 nodes
3. what is critical section
4. deadlock 3 questions
5. CN 4 questions
6. TOC only one question
7. DAA nearly 10 questions (t.c)
8. Micro Processor interrupts 4 questions
9. OS total 10 question
10. digital 10 q

All questions are from gk publishers gate hand book with out changing options also I attempted nearly 50 questions nearly 10 wrong
I will wait for results