Which of the following protocols can be used to prevent Layer 2 loops on a campus network?

• A.SNMP
• B.RSTP
• C.NAT
• D.OSPF

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In the network shown in the figure below, there are the following configurations in Router A. Which of the following statements is correct?
ip route-statiC.10.0.2.2255.255.255.25510.0.12.2iP
Route-statiC.10.0.2.2255.255.255.25510.0.21.2pre ference 70

• A.The Next in the routing table of Router A reaches 10.0.2.2. Hop is 10.0.21.2
• B.If the G0/0/1 port is Down, the route NextHap from Router A to 10.0.2.2 is changed to 10.0.21.2
• C.The Next in the routing table of Router A reaches 10.0.2.2. Hop is 10.0.12.2
• D.If the G0/0/2 port is Down, then Router A reaches 10.0.2.2. The route NextHop. is changed to 10.012.2

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Which field of the Pv6 packet header can be used for Q0s? ()

• A.TraffiC Class
• B.D. PayloaD Length
• C.B. Next Header

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Assuming that OSPF has been enabled on all routers in the following figure, which router is the BDR on this network?

• A.Router B
• B.Router A
• C.Router D
• D.Router C

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The output information of the routing table of a certain router is shown in the figure. Which of the following statements is correct? () (Multiple Choice Questions)
#R1#display ip routing-table
Route Flags: R-relay, D-download to fib

• A.The NextHop for this router to reach 10.0.2.2 is 10.0.21.2
• B.The NextHop for this router to reach 10.0.0.1 is 10.0.21.2
• C.The NextHop for this router to reach 10.0.0.1 is 10.0.12.2
• D.The NextHop for this router to reach 10.0.2.2 is 10.0.12.2

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