多項(xiàng)選擇題

Refer to the exhibit. As a network administrator， you have configured a dual-rate， dual-bucket policer in accordance with RFC 2698 on the serial interface of you router， connecting to your provider. The SLA with your provider states that you should only send AF31 （limited to 150 kb/s）， AF32 （limited to 50 kb/s）and AF33 （best effort）. Your service provider claims you are not conforming to the SLA.Which two things are wrong with this configuration？ （）

A.The configuration of a service policy on half-duplex Ethernet interfaces is not supported.
B.The class class-default sub-command of the policy-map limit command should be set to the DSCP default.
C.The violate action is wrong.
D.This policer configuration is not implementing RFC 2698 dual-bucket， dual-rate.
E.The policer is configured in the wrong class.


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2.單項(xiàng)選擇題

Refer to exhibits 1 and 2. A company uses a Metro Ethernet （Gigabit Ethernet） dedicated circuit to communicate between users （subnet B） and servers （subnet A） as shown in Exhibit 1. Both routers use OSPF to advertise the subnets. During a weekly management meeting， they realize that the WAN link is oversize. They have been using only 2 Mb/s in the worst-case scenario. So they propose a new， cheaper WAN connection using a 2-Mb/s Frame-Relay point-to-point link to interconnect both sites （Exhibit 2）. The Frame Relay service provider informs them that multicast traffic is not allowed to run over the service provider network. Which one of these options is best to enable the company to establish the OSPF neighbor adjacency？（）

A.Use OSPF network broadcast，because it uses unicast to establish a neighbor relationship.
B.Use OSPF network point-to-multipoint，because it uses unicast to establish a neighbor relationship.
C.Use OSPF network point-to-point，because it uses unicast to establish a neighbor relationship.
D.Use OSPF network point-to-multipoint nonbroadcast，because it establishes a neighbor relationship using unicast packets.
E.Use OSPF network nonbroadcast，because it establishes a neighbor relationship using multicast.

4.單項(xiàng)選擇題

Refer to the exhibit. When applying this policy map on the tunnel1 interface， you see packet loss for the TCP class starting at around 100000 b/s， instead of the configured 150000 b/s. What is the most likely cause of the discrepancy？（）

A.The violate-action command should not be configured.
B.The current configuration of the load-interval command on the tunnel interface is preventing proper policing calculations.
C.The burst size is too low.
D.Policing on tunnel interfaces is not supported.
E.The CIR keyword is missing in the policer.

6.單項(xiàng)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.

7.單項(xiàng)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.

10.多項(xiàng)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.