多项选择题

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

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单项选择题

An ISP is running a large IBPG network with 25 routers. The full mesh topology that is currently inplace is inefficiently using up bandwidth from all of the BGP traffic. What can the administratorconfigure to reduce the number of BGP neighbor relationships within the AS？（）

A.Route reflectors
B.Route maps
C.Route redistribution
D.Peer groups
E.Aggregate addresses

单项选择题

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

单项选择题

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