多选题What are two purposes of the AS_PATH attribute?（）Aroute selectionBloop avoidanceCdetermining equal cost paths for reachabliltyDdefining the application of other BGP attributes

A.4

B.8

C.12

D.16

A. Only the path that is the feasible successor should be used.

B. Load balancing is disabled on t his router.

C. The router only performs equal - cost load balancing on all paths that have a metric greater than 1

D. The router performs equal - cost load balancing.

A. to perform a label push operation

B. to track the status of signaled LSPs

C. to perform longest-match route lookups

D. to reserve resources, such as labels and path information

Refer to the exhibit. Router B and router C are performing mutual redistribution between OSPF and EIGRP, and their default metrics are configured the same. Router D has equal cost paths to networks where both paths are not r eally equal cost. For example, network 172.16.54.0 shows equal cost through both router B and router C, though in reality the cost is greater using router C. Other routers, though not shown, are connected to the 172.16.54.0 and 172.16.55.0 networks, and the same issues exist to those routers and the networks connected to them. What can be done so that data will be routed along the most optimal path in the network? （）

A. Redistribute connected interfaces on router B and router C

B. Set the maximum nu mber of equal cost paths to1 in all routers

C. When redistributing EIGRP into OSPF, set the external metric type to type E1

D. Adjust the default metrics in router B and router C so that the values are different in each router

E. None of these solut ions will fix the problem. Migrate to a single dynamic routing protocol

A. route selection

B. loop avoidance

C. determining equal cost paths for reachablilty

D. defining the application of other BGP attributes

A router is running BGP and receives more than one route for a particular prefix. Assume all the routes for this prefix have the same attributes.Which three path features would be reasons be for the rou ter to ignore some of the routes and not consider them as candidates for the best path?（）

A. paths from an internal BGP (iBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH

B. paths for which the NEXT_HOP is inaccess ible

C. paths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH

D. paths for which the NEXT_HOP is accessible

E. paths that are marked as synchronized in the show ip bgp output

F. paths that are marked as not synchronized in the show ip bgp output

A. route selection

B. loop avoidance

C. determining equal cost paths for reachablilty

D. defining the application of other BGP attributes

A. 16

B. 2

C. unlimited

D. 4