A network engineer is designing an OSPF broadcast segment with 20 routers. The engineer wants to minimize the impact of a DR failure on convergence. Which approach achieves this goal with the least operational overhead?

Use the BDR as the primary forwarding path and the DR as a backup to distribute the load.

Configure all routers with the same OSPF priority and rely on router ID for election.

Set the OSPF priority of one router to 255 and all others to 0, ensuring a stable DR that rarely changes.

Ensure the BDR is a high-performance router and configure fast Hello timers to speed up failure detection.

What is the primary function of the Backup Designated Router (BDR) on an OSPF broadcast multi-access network?

To elect the DR based on router priority

To reduce the number of LSAs by summarizing routes for the segment

To maintain full adjacencies with all routers and take over if the DR fails

To forward all LSAs on behalf of the DR to reduce DR load

A network administrator is adding a new router to an existing OSPF broadcast segment. The new router has a higher OSPF priority than the current DR. What will happen to the DR/BDR roles?

The new router becomes the DR immediately because it has the highest priority.

The new router triggers a new election, and all routers re-elect the DR and BDR.

The new router remains a DROTHER until the current DR or BDR fails.

The new router becomes the BDR, and the current BDR becomes a DROTHER.

In OSPF, what happens when the Designated Router (DR) on a broadcast segment fails?

The Backup Designated Router (BDR) becomes the new DR and a new BDR is elected

The segment becomes non-broadcast and adjacencies are re-established

The router with the highest router ID becomes the new DR

All routers on the segment elect a new DR from scratch

Juniper NetworksCertified Professional, Service Provider Routing and Switching (JNCIP-SP)

Domain 1Objective 4

Designated Router Operations JN0-664 Practice Questions (Page 3)

Part of the OSPF domain, which makes up ~19% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–11 in this domain), expect 1–1 from this objective — we provide 14 practice questions to prepare you well beyond it. (estimate)

14questions here

3free pages

6concepts

Questions 11–14

11expert · medium
A network engineer is designing an OSPF broadcast segment with 20 routers. The engineer wants to minimize the impact of a DR failure on convergence. Which approach achieves this goal with the least operational overhead?
Select an answer first
12foundation · easy
What is the primary function of the Backup Designated Router (BDR) on an OSPF broadcast multi-access network?
Select an answer first
13application · easy
A network administrator is adding a new router to an existing OSPF broadcast segment. The new router has a higher OSPF priority than the current DR. What will happen to the DR/BDR roles?
Select an answer first
14foundation · easy
In OSPF, what happens when the Designated Router (DR) on a broadcast segment fails?
Select an answer first

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