1. OSPF SIM – the Serial interfaces that terminate to R3 they changed the timer values, so try to use the command ” show ip ospf interface serialx/x ” to find the correct answer – I have chosen neighbor command should be applied option between R1 and R3 because network type was non broadcast and timers were 30,120, 120.Between R2 and R3 network type was POINT-TO-POINT and timer were 10,40, 40.