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WithoutBook LIVE Mock Interviews OSPF Related interview subjects: 74

Interview Questions and Answers

Know the top OSPF interview questions and answers for freshers and experienced candidates to prepare for job interviews.

Total 30 questions Interview Questions and Answers

The Best LIVE Mock Interview - You should go through before interview

Know the top OSPF interview questions and answers for freshers and experienced candidates to prepare for job interviews.

Interview Questions and Answers

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Freshers / Beginner level questions & answers

Ques 8

How does OSPF handle router priority in DR/BDR election?

Router priority is a value used in the DR/BDR election process. The router with the highest priority becomes the DR, and the second-highest becomes the BDR.
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Intermediate / 1 to 5 years experienced level questions & answers

Ques 10

How does OSPF prevent routing loops?

OSPF uses the Dijkstra algorithm to calculate the shortest path tree, and it avoids routing loops by using the concept of a designated router (DR) on multi-access networks.
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Ques 11

Explain the OSPF LSDB (Link State Database).

The LSDB contains information about the network's topology, represented as link-state advertisements (LSAs). Routers use this database to calculate the SPF tree.
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Ques 12

Differentiate between OSPF areas and autonomous systems.

OSPF areas are subdivisions of an OSPF autonomous system. An OSPF autonomous system is a collection of OSPF areas connected by a backbone area (Area 0).
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Experienced / Expert level questions & answers

Ques 24

Explain OSPF LSA types and their functions.

OSPF LSAs (Link State Advertisements) include Router LSAs, Network LSAs, Summary LSAs, ASBR Summary LSAs, and External LSAs, each serving a specific purpose in the OSPF network.
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Ques 25

What is OSPF convergence time?

Convergence time is the duration it takes for OSPF routers to update their routing tables after a topology change. OSPF typically has fast convergence due to its incremental SPF algorithm.
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Ques 26

How does OSPF handle network convergence in the presence of a link failure?

OSPF quickly reacts to link failures by recalculating the SPF tree and updating routing tables. This fast convergence is facilitated by OSPF hello and dead interval timers.
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