What are three characteristics of the OSPF routing protocol? (Choose three.)

The correct answer is A. It converges quickly. C. It uses cost to determine the best route. F. OSPF routers discover neighbors before exchanging routing information.. OSPF (Open Shortest Path First) has three key characteristics relevant here: (A) It converges quickly because it uses LSAs (Link-State Advertisements) to immediately flood topology changes, allowing routers to recalculate paths rapidly. (C) It uses cost as its metric, calculated

Implement a Scalable OSPF Based Solution

Question

What are three characteristics of the OSPF routing protocol? (Choose three.)

Exhibit

Options

AIt converges quickly.
BOSPF is a classful routing protocol.
CIt uses cost to determine the best route.
DIt uses the DUAL algorithm to determine the best route.
EOSPF routers send the complete routing table to all directly attached routers.
FOSPF routers discover neighbors before exchanging routing information.

How the community answered

(20 responses)

A
95% (19)
E
5% (1)

Explanation

OSPF (Open Shortest Path First) has three key characteristics relevant here: (A) It converges quickly because it uses LSAs (Link-State Advertisements) to immediately flood topology changes, allowing routers to recalculate paths rapidly. (C) It uses cost as its metric, calculated as reference bandwidth divided by interface bandwidth (default reference = 100 Mbps). (F) OSPF routers send Hello packets to discover and establish neighbor adjacencies before any routing information is exchanged. Option B is wrong - OSPF is classless (it includes subnet masks in updates). Option D is wrong - DUAL is EIGRP's algorithm, not OSPF's (OSPF uses Dijkstra's SPF). Option E is wrong - OSPF sends only LSAs describing topology, not a full routing table like distance-vector protocols do.

Topics

#OSPF#convergence#cost metric#neighbor discovery

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