多項選擇題

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.