What is an OSPF transit network?

What is an OSPF transit network?
A . a network that uses tunnels to connect two areas
B. a special network that connects two different areas
C. a network on which a router discovers at least one neighbor
D. a network that connects to a different routing protocol

View Answer

Answer: B

Explanation:

OSPF is a link-state routing protocol that divides a network into areas. An area is a logical grouping of routers that share the same link-state information. Area 0 is the backbone area that connects all other areas. A transit network is a special network that connects two different areas. A transit network must belong to Area 0 and have at least two OSPF routers attached to it. A transit network allows traffic from one area to pass through another area without changing the area ID.

References:

https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/7039-1.html https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13703-8.html