SBI SO 2014 - Morning Session Question

SBI SO exam conducted on 19th April 2014. Here are few questions taken from memory.

1) What is a quarter adder?
2) N flipflop divides the clock frequency by which factor?
3) Which OSI layer act between user services and network services?



4) A Grammer was given, and question was to identify the string generated by that grammer
5) In relational database,attribute is represented using? - Ans: column
6) Problem to identify number of independent variables in a min function
7) Compute the subnet address of a classless network
8) It takes 200 sec to sort 200 numbers using bubble sort, how many elements can be sorted in 400sec
9) Which property of transport layer to disconnect the network, in the event of failure.
10) What do mean by incomplete automata

Hello guys please update more questions, if you remember.