The Border Gateway Protocol (BGP) is an interautonomous system （71） protocol.The primary function of a BGP speaking system is to exchange network （72） information with other BGP system. This network reachability information includes information on the list of Autonomous System (ASs) that reachability information traverses. BGP-4 provides a new set of mechanisms for supporting （73）interdomain routing. These mechanisms include support for advertising an IP （74） and eliminate the concept of network class within BGP.BGP-4 also introduces mechanisms that allow aggregation of routes, including （75） of AS paths. These changes provide support for the proposed supernettting scheme.

72（）

A．secubility

B．reachability

C．capability

D．reliability

根据供方绩效综合评价结果，对AB级供应商的处置意见包括（）。

A、增大供应商份额

B、优先考虑建立战略合作伙伴关系

C、考虑实施扶持政策

D、实施潜在合格供应商供货评价