189. ASR9000 satellite nV network toplogy." F. e2 _; J# t6 x
A. full mesh 5 ]& c( D/ W" b" u+ eB. ring topology. " q. l& }( [/ F, |7 VC. Hub and spoke z. U( H3 h8 s' R: U0 F+ y
D. dual home 9 u9 r6 q# B5 {% @: u0 \. k : ]7 M: P* }4 z. X0 E, [! a这个是那个?