题目内容：
阅读以下说明，回答问题 1至问题 3. 将解答填入答题纸对应的解答栏内。【说明 】某局域网的拓扑结构如图 3-1 所示。其中switchA ge0/0/2与路由器相连。
网络的主要配置如下，请解释配置命令。//（1）[SwitchB] vlan batch 10 20[SwitchB] interface GigabitEthernet 0/0/1[SwitchB-GigabitEthernet0/0/1] port link-type access[SwitchB-GigabitEthernet0/0/1] port default vlan 10[SwitchB] interface GigabitEthernet 0/0/2[SwitchB-GigabitEthernet0/0/2] port link-type access[SwitchB-GigabitEthernet0/0/2] port default vlan 20[SwitchB] interface GigabitEthernet 0/0/23[SwitchB-GigabitEthernet0/0/23] port link-type trunk[SwitchB-GigabitEthernet0/0/23] port trunk allow-pass vlan 10 20//（2）[SwitchA] vlan batch 10 20 30 100[SwitchA] interface GigabitEthernet 0/0/23[SwitchA-GigabitEthernet0/0/23] port link-type trunk[SwitchA-GigabitEthernet0/0/23] port trunk allow-pass vlan 10 20//（3）[SwitchA] interface GigabitEthernet 0/0/24[SwitchA-GigabitEthernet0/0/24] port link-type access[SwitchA-GigabitEthernet0/0/24] port default vlan 30//配置连接路由器的接口模式，该接口属于VLAN100[SwitchA] interface GigabitEthernet 0/0/2[SwitchA-GigabitEthernet0/0/2] port link-type access[SwitchA-GigabitEthernet0/0/2] port default vlan 100//配置内网网关和连接路由器的地址[SwitchA] interface Vlanif 10[SwitchA-Vlanif10] ip address 192.168.10.1 24[SwitchA] interface Vlanif 20[SwitchA-Vlanif20] ip address 192.168.20.1 24[SwitchA] interface Vlanif 30[SwitchA-Vlanif30] ip address 192.168.30.1 24[SwitchA] interface Vlanif 100[SwitchA-Vlanif100] ip address 172.16.1.1 24//（4）[SwitchA] ip route-static 0.0.0.0 0.0.0.0 172.16.1.2//（5）[AR2200] interface GigabitEthernet 0/0/0[AR2200-GigabitEthernet 0/0/0] ip address 59.74.130.2 30[AR2200] interface GigabitEthernet 0/0/1[AR2200-GigabitEthernet 0/0/1] ip address 172.16.1.2 24//（6）[AR2200] acl 2000[AR2200-acl-basic-2000] rule permit source 192.168.10.0 0.0.0.255[AR2200-acl-basic-2000] rule permit source 192.168.20.0 0.0.0.255[AR2200-acl-basic-2000] rule permit source 192.168.30.0 0.0.0.255[AR2200-acl-basic-2000] rule permit source 172.16.1.0 0.0.0.255//（7）[AR2200] interface GigabitEthernet 0/0/0[AR2200-GigabitEthernet 0/0/0] nat outbound 2000//（8）[AR2200] ip route-static 192.168.10.255.255.255.0 172.16.1.1[AR2200] ip route-static 192.168.20.255.255.255.0 172.16.1.1[AR2200] ip route-static 192.168.30.255.255.255.0 172.16.1.1[AR2200] ip route-static 0.0.0.0 0.0.0.0 59.74.130.1（1）~（8）备选答案：A．在SwitchC上配置接口模式，该接口属于VLAN 30B．配置指向路由器的静态路由C．在SwitchA上创建VLAN，配置接口模式并放行VLAN 10 和VLAN 20D．配置到内网的静态路由和到外网的静态路由E．配置路由器内部和外部接口的IP地址F．配置ACL策略G．外网接口配置NAT转换H．在SwitchB上创建VLAN，并配置接口模式【问题2 】(6 分)图3-2是PC4的网络属性配置界面，根据以上配置填空。IP地址：（9）子网掩码：（10）默认网关：（11）
【问题3】（6分）//为了限制VLAN 10中的用户的访问，在网络中增加了如下配置。[SwitchA] time-range t 8:00 to 18:00 daily[SwitchA] acl number 3002[SwitchA-acl-adv-3002] rule 5 deny ip source 192.168.10.0 0.0.0.255Destination 192.168.30.0 0time-range t[SwitchA] traffic classifier tc 1[SwitchA-classifier-tc 1] if-match acl 3002[SwitchA]traffic behavior tb 1[SwitchA-behavior-tb 1] deny[SwitchA] traffic policy tp 1[SwitchA-trafficpolicy-tp 1]classifier tcl behavior tb 1[SwitchA] interface GigabitEthernet0/0/23[SwitchA-GigabitEthernet0/0/23] traffic-policy tp 1 inbound1．以上配置实现了VLAN 10的用户在（12）时间段可以访问VLAN（13）中的主机。2．ACL 3002中的编号表示该ACL的类型是（14）。
答案解析：