单项选择题
A. connection speed B. number of remote sites C. features to be supported D. types of devices at the remote site
A.full mesh B.peer-to-peer C.partial mesh D.hub and spoke
A.(a)-(4);(b)-(1);(c)-(2);(d)-(3) B.(a)-(3);(b)-(2);(c)-(4);(d)-(1) C.(a)-(4);(b)-(3);(c)-(1);(d)-(2) D.(a)-(2);(b)-(4);(c)-(3);(d)-(1)