(1) What algorithm is used by the distance vector routing protocols? (2) What is the common problem of the distance vector routing protocol? (3) What metric is used for RIP? (4) Refer to the diagram below. The routing protocol RIP is configured on all routers. What are the metric and the next hop of the route to the network 192.168.66.0/24 on each router? Router outer 192.168.66.0/24 Router1 Router6 Router Router For the route to the network 192.168.66.0/24 On Router 1, the metric is:??????????, the next hop is: On Router2, the metric is On Router3, the metric is On Router4, the metric is On Router5, the metric is On Router6, the metric is the next hop is the next hop is the next hop is: the next hop is: the next hop is