Which two functions are performed by the DR in OSPF? (Choose two.)
A.
The DR originates the network LSA on behalf of the network.
B.
The DR is responsible for the flooding throughout one OSPF area.
C.
The DR forms adjacencies with all other OSPF routers on the network, in order to synchronize the
LSDB across the adjacencies.
D.
The DR is responsible for originating the type 4 LSAs into one area.
OSPF router type
IR: All interfaces belonging to the same area
ABR: Some interface(s) to Area 0, some to other areas, keep multiple LS db in the memory, one for each area
BR: has interface to backbone
ASBR: connecting to other routing protocol, exchange with ospf
DR: elected on a particular multi-access network,
1. origin the LSA on behalf of the network
2. Sync the LSDB
BDR:- second highest priority during DR election, backu to DR
A correct
B. incorrect. in one are can be multiple DR, only one DR per multi-access network
c. correct
d. Type 4 is for inter area, ABR does
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