47、路由器A配置如下：
Quidway#SHOW RUN
Now create configuration...
Current configuration
!
!
interface Ethernet0
ip address 1.1.1.1 255.0.0.0
!
interface Serial0
clock-select DTECLK1
encapsulation x25 dte ietf
x25 address 2111
x25 map ip 2.1.1.2 2112
ip address 2.1.1.1 255.0.0.0
!
interface Serial1
encapsulation ppp
!
interface Serial2
flowcontrol normal
async mode dedicated
encapsulation ppp
!
exit
router rip
!
end
路由器B配置如下
Quidway#SHOW RUN
Now create configuration...
Current configuration
!
!
interface Ethernet0
ip address 3.1.1.1 255.0.0.0
!
interface Serial0
encapsulation x25 dce ietf
x25 address 2112
x25 map ip 2.1.1.1 2111
ip address 2.1.1.2 255.0.0.0
!
interface Serial1
encapsulation ppp
!
interface Serial2
flowcontrol normal
async mode dedicated
encapsulation ppp
!
exit
router rip
!
end
如下说法正确的是（ A）
A、两端广域网可以联通，但局域网不可以连通
B、两端广域网不可以连通，但局域网可以连通
C、广域网和局域网都可以连通
D、广域网和局域网都不能连通
48、路由器A的配置为：
Quidway#SHOW RUN
Now create configuration...
Current configuration
!
frame-relay switching
!
interface Ethernet0
ip address 10.1.1.1 255.255.0.0
ip rip version 2 mcast
!
interface Serial0
clock-select DTECLK1
encapsulation frame-relay
frame-relay intf-type DCE
frame-relay interface-dlci 100
ip address 2.1.1.1 255.0.0.0
ip rip version 2 mcast
!
interface Serial1
encapsulation ppp
!
interface Serial2
flowcontrol normal
async mode dedicated
encapsulation ppp
!
exit
router rip
no auto-summary
neighbor 2.1.1.2
!
end
路由器B的配置为
Quidway#SHOW RUN
Now create configuration...
Current configuration
!
!
interface Ethernet0
ip address 10.2.1.1 255.255.0.0
ip rip version 2 mcast
!
interface Serial0
encapsulation frame-relay
ip address 2.1.1.2 255.0.0.0
ip rip version 2 mcast
!
interface Serial1
encapsulation ppp
!
interface Serial2
flowcontrol normal
async mode dedicated
encapsulation ppp
!
exit
router rip
no auto-summary
neighbor 2.1.1.1
!
End
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