1. What are the two topology areas In IS-IS? 2. L1/L2 routers are analogous to what in OSPF? 3. IS-IS was designed as part of the Open System Interconnection (OSI) network layer service called...

1. What are the two topology areas In IS-IS?

2. L1/L2 routers are analogous to what in OSPF?

3. IS-IS was designed as part of the Open System Interconnection (OSI) network layer service called Connectionless Network Service (CLNS). What is a Connectionless Network Service (CLNS)?