問答題what device sends IGMP Query messages？

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1.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.

3.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.

5.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.