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Question 21

Regarding the comparison between OSPF protocol and RIPv2 protocol, the following statement is correct

Question 22

The BGP protocol is carried by _________, and its port number is _________

Question 23

In the topology shown in the figure, the following configurations are performed on RTA and RTB respectively:
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 1.1.1.1 0.0.0.0
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.1.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.4.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.7.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.8.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.15.0 0.0.0.255
RTB]ospf 1
RTB-ospf-1]area 1
rtb-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]area 0
RTB-ospf-1-area-0.0.0.1]abr-summar192.168.0.0 255.255.248.0
Which of the following routes may exist in the RTC routing table_____

Question 24

In the topology shown in the figure, by executing the import-route direct command on the RTA, 192.168.0.0/24, 192.168.1.0/24, 192.168.2.0/24, 192.168.3.0/24 and 192.168.4.0/24 are injected. Five routes, and perform the following configurations on RTA, RTB and RTC respectively:
RTA]ospf 1
RTA-ospf-1]area 1
RTA-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]nssa
RTA-ospf-1]asbr-summar192.168.0.0 255.255.192.0 not-advertise
RTA-ospf-1]import direct
RTB]ospf 1
RTB-ospf-1]area 1
rtb-ospf-1-area-0.0.0.1]network 10.0.0.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1]nssa default-route-advertise
RTB-ospf-1-area-0.0.0.1]area 0
RTB-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTB-ospf-1]import direct
rtc]ospf 1
RTC-ospf-1]area 0
rtc-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
RTC-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255 The impossible routes in the RTC routing table are _____

Question 25

In the topology shown in the figure, the following configuration is performed on RTA and RTB respectively
RTA-ospf-1-area-0.0.0.1] network 192.168.0.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1] network 192.168.1.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1] network 192.168.2.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1] network 192.168.3.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1] network 192.168.4.0 0.0.0.255
Now it is required that the RTC must not learn the routes configured in the above RTA. What configuration can be performed on the router?