Cognizant Software Developer interview questions

1 Tell me about your self 2 What is c# 3 What is oops concept 4 What is Delegate 5 Difference between polymorphism and what are its type 6 What is out and ref keyword 7 What is call by ref and call by value 8 What is namespace 9  What is data hiding 10 What is abstraction 11 diff between  dbms and rdbms 12 what is drop and truncate? Can we use Rollback for drop 13 can we use pointer in c# 14 what is managed and unmanaged code 15 what are Joins and types of Joins 16 what is cross join 17 diff between sp and function 18 what is primary key 19 what is foreign key

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