Which of the following attributes must be carried when BGP sends route update messages?
On an OSPF network, two directly connected routers fail to establish a neighbor relationship. The display ospf error command is run on one of the routers, and the command output is as follows:

Based on the command output, which of the following is the cause of the problem?
A node of a route-policy can contain multiple if-match and apply clauses. If a route matches a node, all apply clauses of the node are applied to the route. Which of the following routing information can be modified by configuring the apply clauses?
In an OSPF routing domain, two routers must be specified as one DR and one BDR in a broadcast or NBMA network with at least two routers.