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Which difference must an engineer consider when choosing whether to implement OSPF or IS-IS as the routing protocol on the network?
- A . The OSPF DR election process is deterministic, and the IS-IS DS election process is not deterministic.
B. To support fast convergence. OSPF uses the LSA arrival timer and IS-IS uses the PRC-interval timer.
C. IS-IS supports ordinary, stub, totally-stub. and NSSA areas, but OSPF supports only stub areas.
D. IS-IS links are associated with either a Level 1 area or a Level 2 area at one time, but OSPF links are associated with multiple areas at one time.
Suggested Answer: B
Explanation:
Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_isis/configuration/15-s/irs-15-s-book/irs-fscnt.html
Explanation:
Reference: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_isis/configuration/15-s/irs-15-s-book/irs-fscnt.html
Posted : 22/01/2023 4:15 am