Refer to the exhibit.
Which statement about this neighbor of R1 is true?
A.
OSPFv3 adjacency has been lost, which causes the neighbor to be considered Stale.
B.
Aggregate global addresses are always used between IPv6 neighbors.
C.
OSPFv3 adjacency will not work between link-local addresses.
D.
R1 used ICMP to learn about this neighbor.
Explanation:
ICMP is a ping echo. IPv6 uses ICMP to learn about its neighbor.
Explanation is crap. A ping echo is ICMP but ICMP is NOT a ping echo. ICMP is used for many things besides ping. IPv6 uses ICMP for neighbor discovery. Since the neighbor IP begins with FE80, it is a link local address that was discovered via neighbor discovery.