民事合同是作为平等主体的当事人之间设立、变更或者终止民事关系的协议。下列不属于民事合同的一项

is verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds.What could be the cause of this problem？（）

A. OSPF authentication errors between some of the routers

B. Two routers have the same OSPF router ID

C. Issues with mistuned OSPF timers

D. OSPF LSA pacing issues between some of the routers

E. OSPF neighbor adjacency problems between some of the routers

A. It converges quickly.

B. OSPF is a classful routing protocol.

C. It uses cost to determine the best route.

D. It uses the DUAL algorithm to determine the best route.

E. OSPF routers send the complete routing table to all directly attached routers.

F. OSPF routers discover neighbors before exchanging routing information.

A．It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point network

B．It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF router

C．It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access network

D．It is used to determine which interfaces will send Hello packets to neighboring OSPF routers

A. It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point network

B. It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF router

C. It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access network

D. It is used to determine which interfaces will send Hello packets to neighboring OSPF routers

A. all routers on a link

B. all routers in an area

C. all external OSPF peers

D. all routers in an OSPF domain

A. All OSPF routers in stubby areas can have type 3 LSAs in their database.

B. All OSPF routers in stubby areas can have type 7 LSAs in their database.

C. All OSPF routers in totally stubby areas can have type 3 LSAs in their database.

D. All OSPF routers in totally stubby areas can have type 7 LSAs in their database.

E. All OSPF routers in NSSA areas can have type 3 LSAs in their database.

F. All OSPF routers in NSSA areas can have type 7 LSAs in their database.

A.It converges quickly.

B.OSPF is a classful routing protocol.

C.It uses cost to determine the best route.

D.It uses the DUAL algorithm to determine the best route.

E.OSPF routers send the complete routing table to all directly attached routers.

F.OSPF routers discover neighbors before exchanging routing information.

A. Router R1 will only establish full adjacency with the DR and BDR on broadcast multi- access networks.

B. Router R2 has been elected as a DR for the broadcast multiaccess network in OSPF area 1.

C. Routers R1 and R2 are configured as stub routers for OSPF area 1 and OSPF area 2.

D. Router R1 and R2 are configured for a virtual link between OSPF area 1 and OSPF area 2.

E. The Hello parameters on routers R1 and R2 do not m atch.

en them. Each router has been configured with the appropriate network statements under router ospf 1, but the routers are not forming an adjacency. Which of the following three commands could be configured on each router to correct this problem？（）

A. RouterC(config - if)#ip ospf network broadcast RouterD(config - if)#ip ospf network broadcast

B. RouterC(config - if)#ip ospf network point - to - point RouterD(config - if)#ip ospf network point - to - point

C. RouterC(config - router)#neighbor 10.100. 100.4 RouterD(config - router)#neighbor 10.100.100.3

D. RouterC(config - router)#neighbor 10.255.255.254 RouterD(config - router)#neighbor 10.255.255.253