單項(xiàng)選擇題

Refer to the exhibit diagram and configuration. RTB is summarizing its networks from AS 64100with the aggregate-address command. However， the show ip route command on RTA reveals theRTB individual networks as well as its summary route. Which option would ensure that only thesummary route would appear in the routing table of RTA？（）

A.Add a static route with a prefix of 192.168.24.0 255.255.252.0 pointing to the null0 interface
B.Create a route map permitting only the summary address
C.Delete the four network statements and leave only the aggregate-address statement in theBGP configuration
D.Add the keyword summary-only to the aggregate-address command


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1.多項(xiàng)選擇題What are the two reasons for the appearance of 0.0.0.0 as the next hop for a network when usingthe "show ip bgp" command？（）

A.The network was originated via redistribution of an interior gateway protocol into BGP
B.The network was defined by a static route
C.The network was learned via IBGP
D.The network was learned via EBGP
E.The network was originated via a network or aggregate command

3.單項(xiàng)選擇題You are the administrator of a company with BGP connections to multiple ISP’s. How could youconfigure BGP to make it favor one particular ISP for outbound traffic？（）

A.Configure weight
B.Enable route reflector
C.Create a distribute list
D.Enable the Longer Autonomous System path option
E.All of the above

4.單項(xiàng)選擇題Router R1 needs to be configured to advertise a specific network. Which of the followingcommands would you use if you wanted to advertise the subnet 154.2.1.0 255.255.255.0 to the EBGP neighbors on your subnet？（）

A.Router （config-router）#network 154.2.1.0
B.outer （config-router）#network 164.2.1.0
C.Router （config-router）#network-advertise 154.2.1.0
D.Router （config-router）#network 154.2.1.0 mask 255.255.255.0
E.None of the other alternatives apply

5.單項(xiàng)選擇題

The BGP routing table consists of the following network routes：

What is the correct command to summarize these prefixes into a single summary prefix of192.168.12.0/22 while also allowing for the advertisement of the more specific prefixes？（）

A.network 192.168.12.0 mask 255.255.252.0
B.network 192.168.12.0 mask 0.0.3.255
C.network 192.168.12.0
D.aggregate-address 192.168.12.0 255.255.252.0
E.aggregate-address 192.168.12.0 255.255.252.0 summary-only
F.aggregate-address 192.168.12.0 255.255.252.0 as-set

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