A.push

B.rewrite

C.insert

D.swap

E.pop

A.R1

B.R2

C.R4

D.R3

A.Reduces the size of the link-state database.

B.Reduces LSA flooding on a broadcast segment.

C.Reduces LSA flooding throughout an OSPF area.

D.Reduces router resources used.

A.When you want to bypass a penultimate router that does not support IPv6 tunneling

B.When you want to enforce the same class-of-service behavior through the entire LSP

C.When you want to utilize a penultimate router that supports IPv6 tunneling

D.When you want to ensure the penultimate router can perform the destination route lookup

A.Option D

B.Option A

C.Option C

D.Option B