Is A Process That Is Isentropic Is Necessarily Internally Reversible And Adiabatic?

Is A Process That Is Isentropic Is Necessarily Internally Reversible And Adiabatic? In thermodynamics, an isentropic process is an idealized thermodynamic process that is both adiabatic and reversible. The work transfers of the system are frictionless, and there is no net transfer of heat or matter. Is a process that is internally reversible and adiabatic