In the topology shown in the figure, perform the following configuration in 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
RTB] acl number 2000
RTB-acl-basic-2000] rule 0 permit source 192.168.0.0 0.0.0.255
RTB-acl-basic-2000] rule 5 permit source 192.168.1.0 0.0.0.255
RTB-ospf-1] filter-polic2000 import
Then the possible routes in the RTB routing table are _____

• A.192.168.0.0/24
• B.192.168.2.0/24
• C.192.168.4.0/24
• D.192.168.1.0/24

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IS-IS belongs to the ________ routing protocol and uses the ________ algorithm.

• A.IGP, shortest path first (SPF)
• B.EGP, distance vector (D-V)
• C.EGP, shortest path first (SPF)
• D.IGP, distance vector (D-V)

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In the IS-IS network as shown in the figure, RTA is configured with route aggregation.
So which of the following routes are included in the RTC IS-IS routing table?

• A.172.16.3.0/24
• B.172.16.1.0/24
• C.172.16.2.0/24
• D.172.16.0.0/22

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Regarding the first type of external routing and the second type of external routing in OSPF, the correct statement is ________

• A.The first type of external routes are generated by injecting IGP routes
• B.By default, the routes imported into the OSPF protocol through other routing protocols are all Type 2 external routes
• C.If the routing information of the same network segment is learned through the first type of external routing and the second type of external routing at the same time, under the same other conditions, the first type of external routing information will be preferred
• D.The first type of external routes are generated by injecting BGP routes

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As shown in the figure, 4 routers are connected to an Ethernet link. The router interface is a broadcast network type. Judging from the information in the figure, there are ________ IS-IS adjacencies on the Ethernet link.

• A.3
• B.4
• C.5
• D.6

Correct Answer:

B
There is no picture for this question, just remember the following knowledge points

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