In the topology shown in the figure, the following configurations are performed on RTA, RTB, RTC and RTD respectively:
RTA-LoopBack0] ip address 1.1.1.1 255.255.255.255
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]import-route direct
RTA-ospf-1]default-route-advertise alwa
RTB-LoopBack0] ip address 2.2.2.2 255.255.255.255
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-0.0.0.0]network 2.2.2.2 0.0.0.0
RTB-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTC-LoopBack0] ip address 3.3.3.3 255.255.255.255
RTC]ospf 1
RTC-ospf-1]area 0
RTC-ospf-1-area-0.0.0.0]network 20.0.0.0 0.0.0.255
RTC-ospf-1-area-0.0.0.2]network 3.3.3.3 0.0.0.0
RTC-ospf-1-area-0.0.0.0]area 2
RTC-ospf-1-area-0.0.0.2]nssa no-summarRTC-ospf-1-area-0.0.0.2]network 30.0.0.0 0.0.0.255
RTD-LoopBack0] ip address 4.4.4.4 255.255.255.255
RTD]ospf 1
RTD-ospf-1]area 2
RTD-ospf-1-area-0.0.0.2]network 30.0.0.0 0.0.0.255
RTD-ospf-1-area-0.0.0.2]nssa
RTD-ospf-1]import-route direct
Which of the following routes cannot exist in the RTD routing table _______.

• A.2.2.2.2/32
• B.1.1.1.1/32
• C.3.3.3.3/32
• D.0.0.0.0/0

Comment: *

Name: *

Email: *

Verification: *

The routing table on a H3C router is displayed as follows:
H3C]disp ip rout
Routing Table: public net
Destination/Mask Protocol Pre Cost Nexthop Interface
10.0.0.0/8 OSPF 10 2 20.1.1.2 Ethernet0/0
20.1.1.0/30 DIRECT 0 0 20.1.1.1 Ethernet0/0
20.1.1.1/32 DIRECT 0 0 127.0.0.1 InLoopBack0
127.0.0.0/8 DIRECT 0 0 127.0.0.1 InLoopBack0
127.0.0.1/32 DIRECT 0 0 127.0.0.1 InLoopBack0
172.16.1.0/24 DIRECT 0 0 172.16.1.1 LoopBack1
172.16.1.1/32 DIRECT 0 0 127.0.0.1 InLoopBack0
192.168.1.0/24 DIRECT 0 0 192.168.1. LoopBack2
192.168.1.1/32 DIRECT 0 0 127.0.0.1 InLoopBack0
At the same time, configure the following commands on the router:
bgp 65400
network 172.16.0.0
network 192.168.1.0
network 10.0.0.0
Based on the above information, which of the following BGP routes should be in the router's BGP routing table:

• A.20.1.1.0
• B.No BGP routing
• C.192.168.1.0
• D.172.16.1.0
• E.10.0.0.0

Comment: *

Name: *

Email: *

Verification: *

In the IS-IS network as shown in the figure, each router is configured as follows.
RTA-isis-1]cost-ste wide
RTB-isis-1]cost-ste wide-compatible
RTC-isis-1]cost-ste narrow-compatible
Then the link cost between each other can be calculated correctly is ________.

• A.Nothing
• B.RTB and RTC
• C.RTA and RTC
• D.RTA and RTB

Comment: *

Name: *

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Verification: *

The figure shows the sending of Hello messages between RTA, RTB, and RTC.
Based on the above information, it can be judged that between RTA and RTC is ______, and between RTC and RTB is ______.

• A.No adjacency relationship established, no adjacency relationship established
• B.The neighboring relationship has been established, but the neighboring relationship has not been established
• C.The neighbor relationship has not been established, but the neighbor relationship has been established
• D.The neighbor relationship has been established, and the neighbor relationship has been established

Comment: *

Name: *

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Verification: *

After the BGP router receives the route from the peer, its basic operation is _________.

• A.Ingress Strategy>Preferred Routing>Aggregation>Installation>Exit Strategy
• B.Ingress Strategy>Aggregation>Preferred Routing>Installation>Exit Strategy
• C.Ingress Strategy>Preferred Routing>Installation>Aggregation>Exit Strategy
• D.Ingress Strategy>Aggregation>Installation>Preferred Routing>Exit Strategy

Comment: *

Name: *

Email: *

Verification: *