What are the main differences between the OSPF and IS-IS routing protocols?

A. OSPF requires an area 0, while IS-IS does not.
B. OSPF is a classful protocol, while IS-IS is a classless protocol.
C. OSPF is a link state protocol, while IS-IS is not.
D. OSPF is an IGP routing protocol, while IS-IS is a BGP routing protocol.

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Answer :

Final answer:

OSPF and IS-IS are two routing protocols with distinct differences in their functionality and requirements.


Explanation:

OSPF (Open Shortest Path First) and IS-IS (Intermediate System to Intermediate System) are two popular routing protocols used in networking.

The main differences between OSPF and IS-IS are:

  1. OSPF requires an area 0, while IS-IS does not.
  2. OSPF is a classful protocol, while IS-IS is a classless protocol.
  3. OSPF is a link state protocol, while IS-IS is not.
  4. OSPF is an IGP routing protocol, while IS-IS is a BGP routing protocol.

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