The following statements about OSPF information display and debugging commands are correct _____. (Multiple choice)

• A.Use the display ospf peer command to view the router's OSPF neighbor relationship
• B.You can view the link state database of the router through the display ospf lsdb command. The link state database of all OSPF routers in the network should be the same
• C.Use the display ospf routing command to view the router's OSPF routing situation, not all OSPF routes will be added to the global routing table
• D.View OSPF error information through display ospf fault

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The following debug information is viewed on the customer's router MSR 30:
*0.87831022 IP/8/debug_icmp:
ICMP Receive: ttl-exceeded(Type=11, Code=0), Src = 3.3.3.1, Dst = 3.3.3.2; Origi
nal IP header: Pro = 1, Src = 3.3.3.2, Dst = 20.1.1.1, First 8 bytes = 080081FF
ABD40004
*0.87833017 IP/8/debug_icmp:
ICMP Receive: ttl-exceeded(Type=11, Code=0), Src = 3.3.3.1, Dst = 3.3.3.2; Origi
nal IP header: Pro = 1, Src = 3.3.3.2, Dst = 20.1.1.1, First 8 bytes = 08007A2E
ABD40005
Based on this, it can be inferred that ______.

• A.The destination address of the ICMP packet is 3.3.3.2
• B.The command ping 20.1.1.1 was executed on the router with IP address 3.3.3.2
• C.There may be a routing loop, because the information shows ttl-exceeded
• D.The destination address of the ICMP packet is 20.1.1.1

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An empty MSR router RTA connects two routers RTB and RTC running in OSPF Area 0 through GE0/0 and GE1/0 respectively. The IP addresses of the interfaces GE0/0 and GE1/0 of RTA are 192.168.3.2/24 and 192.168.4.2/24 respectively. Add the following configuration on RTA:
[MSR-ospf-1] area 0.0.0.0
[MSR-ospf-1-area-0.0.0.0]network 192.168.0 0.0.3.255
[MSR-GigabitEthernet0/0]ospf cost 2
[MSR-GigabitEthernet1/0]ospf dr-priority 0
Then the correct description of the above configuration is _____. (Multiple choice)

• A.This configuration has enabled OSPF on GE0/0 and GE1/0 of the MSR router
• B.RTA can only become the DR of the network segment where one of the GE interfaces is located
• C.RTA may become the DR of the network segment where the two GE interfaces are located
• D.Modifying the Cost of interface GE0/0 does not affect the establishment of OSPF adjacency
• E.This configuration only enables OSPF on the GE0/0 interface of the MSR router

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The two routers MSR-1 and MSR-2 complete dynamic routing learning through RIP, and you can see the following debug information on MSR-1:
*Nov 26 02:20:25:353 2008 H3C RM/6/RMDEBUG: RIP 1: Sending v2 request on Serial 0/0 from 3.3.3.3
*Nov 26 02:20:25:353 2008 H3C RM/6/RMDEBUG: RIP 1: Sending request on interface Serial0/0 from 3.3.3.3 to 224.0.0.9
*Nov 26 02:20:25:400 2008 H3C RM/6/RMDEBUG: RIP 1: Receiving v2 request on Serial0/0 from 3.3.3.1
According to the debug information, ______ can be inferred. (Multiple choice)

• A.At this time, there is already RIP routing information from MSR-2 in the MSR-1 routing table
• B.It is possible that the RIP of the two routers has just started at this time
• C.At this time, there is no RIP routing information from MSR-2 in the MSR-1 routing table
• D.The RIP version between the two routers is inconsistent

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The switch SWA port Ethernet1/0/1 was originally an Access port type, and now it needs to be configured as a Hybrid port type. Which of the following commands is the correct configuration command?

• A.[SWA-Ethernet1/0/1]port link-type hybrid
• B.[SWA]port link-type hybrid
• C.[SWA]undo port link-type trunk
• D.[SWA-Ethernet1/0/1]undo port link-type trunk

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