單項選擇題

Refer to exhibits 1 and 2. In exhibit 1，all users on the LAN segment use router A as the active HSRP router. Router B is the standby router for the HSRP. In exhibit 2，the network management team reported that there is no utilization on the WAN link B. To solve this problem，you decide to change the logical topology of your LAN，but you are not sure about what changes must be made. You must manage HSRP or change it to another protocol in order to provide the most scalable design，automatic redundancy，and load balancing. Which one of these actions would be the best choice？（）

A.Use MHSRP，with three users using router A as the default gateway and three users using router B as the default gateway.
B.Keep HSRP and activate PBR to redirect half of the traffic to the other WAN link.
C.Use the backup interface on the WAN link B to provide load balancing for all users.
D.Use GLBP instead，because it provides you with up to three MAC addresses for the same default gateway virtual IP address.
E.Use GLBP instead，because it provides you with up to four MAC addresses for the same default gateway virtual IP address.


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1.單項選擇題

Refer to the exhibit. When applying this hierarchical policy map on the on the tunnel1 interface， you measure high jitter for traffic going through class 1234. What is the most likely cause of this jitter？（）

A.The configuration of a hierarchical policy map on a tunnel interface is not supported.
B.Class 5555 and class 5554 are both taking up 100% of the bandwidth， leaving nothing for class 1234.
C.The burst size for the traffic shaping is wrongly configured to 15000； this would require an interface capable of sending at 150Mb/s.
D.The burst size for the traffic shaping has been wrongly configured； it should be set as low as possible.
E.The burst size for the traffic shaping has been wrongly configured； it should be set as high as possible.

4.多項選擇題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？ （）

A.Tunnel IPv6 over IPv4 to connect far-end IPv6 networks.
B.Explain why configuring IPv4 and IPv6 at the same time over the same LAN interface is not possible.
C.Explain why configuring IPv4 and IPv6 at the same time over the same LAN interface is possible.
D.What is the meaning of EUI-64 and how does it work？
E.Tunnel IPv4 over IPv6 to connect far-end IPv4 networks.