A network engineer is using IS-IS IGP protocol to design a network.
Which three design elements should beused to divide the network into a hierarchy of areas?
(Choose three.)
A. Core routers will be only level-2.
B. Routers on the edge of the network will be only level-1.
C. Router between core and edge routers will be level-1-2.
D. Core routers will be onlylevel-1.
E. Routers on the edge of the network will be only level-2.
F. Router between core and edge routers will be only level-2.
G. Router between core and edge routers will be only level-1.
