题目内容
（请给出正确答案）
某企业全网使用了锐捷的设备,网络拓扑图如下。L3SW1 和 L3SW2 为内网核心设备, RSR 为出口路由器, L2SW 为接入交换机。内网双核心采用 MSTP+VRRP,正常情况下内网用户 VLAN10 的网关为 S5750E-A,VLAN20 的网关为 S5750E-B,当网络链路或内网核心设备出现问题时用户的网关自动切换到另外一条链路或设备上,实现内网的冗余和分流。内网双核心和出口路由器使
A．access-list 1 permit 192．168．0．0 0．0．255．255 ip nat inside source list 1 interface gigabitEthernet 0/2 overload interface gigabitEthernet 0/0 ip nat inside interface gigabitEthernet 0/1 ip nat inside interface gigabitEthernet 0/2 ip nat outside ip route 0．0．0．0 0．0．0．0 218．202．120．53
B．access-list 1 permit 192．168．0．0 0．0．255．255 ip nat inside source list 1 interface gigabitEthernet 0/2 overload interface gigabitEthernet 0/0 ip nat inside interface gigabitEthernet 0/1 ip nat inside interface gigabitEthernet 0/2 ip nat outside ip route 0．0．0．0 0．0．0．0 218．202．120．254
C．access-list 1 permit 192．168．0．0 0．0．255．255 ip nat inside source list 1 interface gigabitEthernet 0/2 overload interface gigabitEthernet 0/0 ip nat inside interface gigabitEthernet 0/1 ip nat inside interface gigabitEthernet 0/2 ip nat intside ip route 0．0．0．0 0．0．0．0 218．202．120．253
D．access-list 1 permit 192．168．0．0 0．0．255．255 ip nat inside source list 1 interface gigabitEthernet 0/2 overload interface gigabitEthernet 0/0 ip nat outside interface gigabitEthernet 0/1 ip nat inside interface gigabitEthernet 0/2 ip nat intside ip route 0．0．0．0 0．0．0．0 218．202．120．253
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