Last month I cleared all the 7 rounds of Veveo.
The 1st 2 rounds were on phone where they asked me to solve simple programming questions on C and Data Structures. Next I was called for F2F which lasted for about 5 hrs.
1st round was written having quesions on C, OS, Algorithms, DS and networking.
The next 4 rounds were F2F and mainly involved Algorithms, DS and OS