●Heterogeneous network environments consist of computer systems from (66) vendors that run (67) operating systems and communication protocols. An organization that (68) its computer resources is usually (69) the task of integrating its heterogeneous systems. Typically, each department or division has defined its own network needs (70) OS, LAN topology, communication protocols, applications, and other components. (66) A.same B.similar C.different D.difference (67) A.same B.similar C.different D.difference (68) A.consolidates B.consists C.considerate D.consoles (69) A.faced on B.faced with D.faced about D.faced up to (70) A.in general B.in any term C.in set terms D.in terms of