多选题
The EtherChannel between your LAN switch and the Internet router is not load-balancing efficiently. On the switch，there are several workstations with valid IP ranges. Which load-balance algorithms can you use in the switch in order to optimize this load balancing？ （）
source IP address
destination IP address
per-packet load balance
destination MAC address
source MAC address
单选题
Refer to the exhibit. Routers A and B are directly connected and running OSPF， but they are unable to form a neighbor relationship. What is the most likely cause？（）
The routers are not on the same network.
The network statements do not match.
The process number does not match.
The MTU does not match.
The OSPF cost does not match.
There is a physical issue with the cable.
单选题
Two routers configured to run BGP have been connected to a firewall，one on the inside interface and one on the outside interface. BGP has been configured so the two routers should peer，including the correct BGP session endpoint addresses and the correct BGP session hop-count limit （EBGP multihop）. What is a good first test to see if BGP will work across the firewall？（）
Attempt to TELNET from the router connected to the inside of the firewall to the router connected to the outside of the firewall.If telnet works，BGP will work，since telnet and BGP both use TCP to transport data
Ping from the router connected to the inside interface of the firewall to the router connected to the outside interface of the firewall.If you can ping between them，BGP should work，since BGP uses IP to transport packets
There is no way to make BGP work across a firewall without special configuration，so there is no simple test that will show you if BGP will work or not，other than trying to start the peering session
There is no way to make BGP work across a firewall
多选题
Your company is researching a new application that runs over IPv6，but part of it must still have IPv4 support. Your company uses a traditional IPv4 network. Your plan is not to run IPv6 over the whole network，but to segment parts of the network or even to operate simultaneously with IPv6 and IPv4. You must make a brief presentation about IPv6 technology to the board of technical directors. Which three of these items could be part of your presentation？ （）
Tunnel IPv6 over IPv4 to connect far-end IPv6 networks.
Explain why configuring IPv4 and IPv6 at the same time over the same LAN interface is not possible.
Explain why configuring IPv4 and IPv6 at the same time over the same LAN interface is possible.
What is the meaning of EUI-64 and how does it work？
Tunnel IPv4 over IPv6 to connect far-end IPv4 networks.
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