Refer to the exhibit.
All routers in this network are configured to run OSPF on all their connected links. R1 is
redistributing 192.168.1.0/24 into Area 1. When the 192.168.1.0/24 network is disconnected from
R1, the network administrator notes that R4 and R3 both receive two OSPF updates. Since
192.168.1.0/24 is within Area 1, the network administrator thinks this may indicate incorrect
operation and calls technical support. Is this incorrect OSPF operation, and why or why not?
A.
This is correct operation; R3 should receive new LSAs from R1, and R4 should receive one
updated LSA from R1 and another from R2.
B.
This is correct operation; R4 will receive and updated router (type 1) LSA from R1 and an
OSPF update removing the external (type 5) LSA from the OSPF database.
C.
This is incorrect operation; R4 should only receive one LSA when 192.168.1.0/24 is
disconnected from R1.
D.
This is incorrect operation; R4 should not receive any LSAs when 192.168.1.0/24 is
disconnected from R1.