A.general communication channel 0 (GCC0) B.section monitoring C.reserved (RES) D.general communication channels 1 and 2 (GCC1 GCC2) E.tandem connection monitoring activation deactivation (TCM ACT)
A.It is generated by an ASBR and indicates the reachability to an ABR located in another area. B.It is generated by ABR and indicates the reachability to an ASBR located in another AS. C.It is generated by ABR and indicates reachability to itself. D.It is generated by ABR and indicates the reachability to an ASBR located in another area. E.It is generated by ASBR and indicates the reachability to an ABR.
A.Class-based Model B.Maximum Allocation Model C.Russian Doll Model D.Global Tunnel Model E.Policy-based Model