單項(xiàng)選擇題Which BGP attribute is used by BGP to prevent routing loops?()

A. AS - path
B. next - hop
C. MED
D. weight
E. local preference
F. origin


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1.單項(xiàng)選擇題

The 192.168.0.0 network is not being propagated throughout  the network. Observe the BGP configuration commands from the advertising router.
What is the reason the 192.168.0.0 route is not being advertised? ()

A. The network 192.168.0.0 statement is missing mask 255.255.0.0
B. The network 192.168.0.0 statement is missing mask 0.0.255.255.
C. The network 10.0.0.0 statement is missing mask 255 .0.0.0.
D. The network 10.0.0.0 statement is missing mask 0.255.255.255.
E. The auto - summary configuration is missing.

2.單項(xiàng)選擇題

Above is the output from show ip bgp neighbors command. What is line 21 stating about the BGP connection?()

A. the number of consecutive TCP connections to the specified remote neig hbor
B. the number of total TCP connections that the router has
C. the number of times the router has established a TCP connection
D. the number of neighbors that the router has

3.單項(xiàng)選擇題

For the accompanying router output, which of the following statements describes the stat e that neighbor 172.16.254.3 is in?()

 

A. The router will not accept connections from the peer.
B. BGP can exchange routing information in this state.
C. The router is listening on its server port for connection requests from the peer.
D. The router ha s sent out an active TCP connection request to the peer.

4.單項(xiàng)選擇題

During BGP configuration on a router that has peered with other BGP speakers, the BGP command aggregate-a ddress 172.32.0.0 255.255.252.0 is issued. However, the peers do not receive this aggregate network in BGP advertisements. Also, the router does not have this aggregate network in its BGP table.
Which option indicates a possible reason this command did not cause the router to advertise the aggregate network to its peers?()

A. Interface NULL 0 is likely shutdown.
B. The next hop IP address must be a loopback address.
C. The BGP command no auto - summary is missing.
D. The BGP command no synchronization is missing.
E. Subnets of 172.32.0.0/22 do not exist in the BGP table.
F. The IGP running on this router does not have network 172.32.0.0/22 installed.

5.單項(xiàng)選擇題

Refer to the exhibit. Router RT - 1 and router RT - 2 both advertise network 131.25.0.0/16 to router
RT - 3 via internal BGP. What is the reason that router RT - 3 chose router RT - 1 as its best path to
network 131.25.0.0/16.()

A. It has a better router ID
B. It advertises a lower autonomous system
C. It advertises t he best AS - path
D. It advertises the best local preference
E. It advertises the best origin code
F. It advertises the best MED

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