What is the purpose of the OSPF router ID in a OR/BOR election？（）

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. defines how the media is accessed

B. supplies a token to determine which host has access to the media

C. defines the encoding of electrical signals on the wire

D. determines the preamble bits

A. to prevent routing loops

B. to create a default route

C. to provide multiple gateways for hosts

D. to maintain a loop-free Layer 2 network topology

E. to enhance the functions of SNMP

A.theouterlabelusedtodeterminethenexthop

B.theIPv4labelforthedestinationnetwork

C.theIPv4labelfortheforwardingrouter

D.theIPv4labelforthedestinationrouter

A. Have a backbone area (area 0) with 40 routers and use default routes to reach external destinations

B. Have a backbo ne area (area 0) with 4 routers and 30,000 external routes injected into OSPF

C. Have less OSPF areas to reduce the need for interarea route summarizations

D. Have multiple OSPF processes on each OSPF router. Example, router ospf 1, router ospf 2

A.devicePoErequirements

B.deviceIPaddress

C.devicevoiceVLANID

D.deviceplatform

A.AllpasswordsenteredduringtheAutoSecureconfigurationmustbeaminimumof8charactersinlength.

B.Cisco123wouldbeavalidpasswordforboththeenablepasswordandtheenablesecretcommands.

C.TheautosecurecommandcanbeusedtosecuretherouterloginaswellastheNTPandSSHprotocols.

D.ForaninteractivefullsessionofAutoSecure，theautosecurelogincommandshouldbeused.

E.IftheSSHserverwasconfigured，the1024bitRSAkeysaregeneratedaftertheautosecurecommandisenabled.

A. the kind of OSPF areas being implemented

B. the number of external LSAs in the network

C. the number of DRs and BDRs in the areas

D. the number of virtual links in the areas

E. how well the areas can be summarized

F. the use of LSA filters

A.QoS

B.callsetupandteardown

C.callrouting

D.callsupervision

E.audiosignalcompression

PF database. Which two options a re valid checks that should be performed first to verify proper OSPF operation?（）

A. Are the ASBRs trying to redistribute the external routes into a totally stubby area?

B. Are the ABRs configured with stubby areas?

C. Is the subnets keyword being used with the redistribution command?

D. Is backbone area (area 0) contiguous?

E. Is the CPU utilization of the routers high?