R1 was telephonic technical the person asked about my current role and started with optimizing bits from matrix which follows a pattern. He ask ed also a small script to fetch data from order list file. R2 was on Oracle SQL including joins and aggregate functions R2 was on data structures link lists like palindrome check using circular, double link list R3 was on scripting using Unix log grepping, text processing using awk, etc. Some behaviorial questions. R4 again similar combination through T1, R1-4 R1 to R4 in a day which took around 45min each in On-site. R6 is HM which is how any on management stufs ticket handling., Incident management, offline scripting etc. It took 2 week for confirmation after HM .