單項(xiàng)選擇題You have two EBGP peers connected via two parallel serial lines. What should you do to be able to load-balance between two EBGP speakers over the parallel serial lines in both directions？ （）

A.nothing，BGP automatically load-balances the traffic between different autonomous systems on all available links
B.peer between the eBGP speaker’s loopbacks， configuring eBGP multihop as required， and use an IGP to load-share between the two equal-cost paths between the loopback addresses
C.configure a loopback as update source for both EBGP peers and have on each AS an IGP to introduce two equal-cost paths to reach the EBGP peer loopback address；it is also necessary to use the next-hop-self command
D.use the ebgp-load-balance command on the neighbor statement on both sides
E.configure a loopback as update source for both EBGP peers and have on each AS an IGP to introduce two equal-cost paths to reach the peer loopback address；it is also necessary to use the ebgp-multihop and next-hop-self commands


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1.單項(xiàng)選擇題Which types of prefixes will a router running BGP most likely advertise to an IBGP peer， assuming it is not configured as a route reflector？（）

A.prefixes received from any other BGP peer and prefixes locally originated via networkstatements or redistributed
B.all prefixes in its routing table
C.prefixes received from EBGP peers and prefixes locally originated via network statements or redistributed
D.prefixes received from EBGP peers and prefixes received from route reflectors
E.prefixes received from other IBGP peers， prefixes received from EBGP peers，and prefixes redistributed to BGP
F.prefixes received from other IBGP peers and prefixes received from route reflectors

4.單項(xiàng)選擇題

Refer to the exhibit. You would like to guarantee 7 Mb/s for FTP traffic in your LAN, as it seems that peer-to-peer traffic is taking up a large amount of bandwidth. When testing the configuration, you notice that FTP traffic doesn't reach 7 Mb/s. What is the problem?（）

A.The Ethernet interface should have keepalives enabled.
B.The duplex settings are wrong on the Ethernet interface.
C.The qos pre-classify command should be removed from the tunnel interfaces.
D.the priority queue for the voice class is probably taking all the bandwidth.
E.there are probably not enough interface buffers；they should be tuned.

5.單項(xiàng)選擇題

Refer to the exhibit. Look at the command output. Assume that there is no other path， and the configuration is correct. What would be the consequences of this situation？（）

A.Users in SW1 can ping SW2 but not vice versa.
B.Users in SW2 can ping SW1 but not vice versa.
C.Users in SW1 and SW2 can ping each other.
D.Users in SW1 and SW2 cannot ping each other.