A service provider is running a dual-stack network with OSPFv2 and OSPFv3. The security team mandates that all routing protocol traffic be authenticated. The engineer has configured MD5 authentication for OSPFv2 and IPsec for OSPFv3. During a review, the engineer discovers that OSPFv3 adjacencies are forming but OSPFv2 adjacencies are not. Which is the most likely cause?

The OSPFv2 MD5 key is not configured correctly on both sides

OSPFv2 does not support authentication on Junos

OSPFv3 requires authentication but OSPFv2 does not

The OSPFv3 IPsec configuration is incorrect

A network administrator is configuring OSPFv3 on a Junos router and needs to secure the routing updates between two directly connected routers. The administrator wants to use IPsec for authentication. Which configuration step is required on the Junos device?

Create an IPsec security association and reference it in the OSPFv3 interface configuration

Apply an IPsec policy to the loopback interface of the router

Configure the 'md5' authentication type on the OSPFv3 interface

Enable the 'authentication' statement under the OSPFv3 protocol and specify a key

Which Junos configuration statement is used to assign an interface to an OSPFv3 area?

set protocols ospf area 0 interface ge-0/0/0.0

set protocols ospf3 area 0 interface ge-0/0/0.0

set protocols ospf3 interface ge-0/0/0.0 area 0

set interfaces ge-0/0/0.0 unit 0 family inet6 ospf3 area 0

A network engineer is configuring OSPFv3 on a Junos router and needs to ensure that OSPFv3 packets are authenticated. The engineer has decided to use IPsec. Which statement is correct regarding IPsec for OSPFv3 on Junos?

IPsec can provide both authentication and encryption for OSPFv3 packets

IPsec is automatically enabled when OSPFv3 is configured

IPsec requires a shared secret configured in the OSPFv3 protocol

IPsec is only available for OSPFv2, not OSPFv3

An OSPFv3 router receives two routes to the same IPv6 prefix. One route is an Inter-Area-Prefix LSA from an ABR, and the other is an AS-External LSA from an ASBR. The router must select the best path. Which route will be preferred?

The route with the lower metric

The route with the higher router ID

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

Domain 1Objective 1

OSPFv2 and OSPFv3 Concepts and Operation JN0-664 Practice Questions (Page 1)

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 29 practice questions to prepare you well beyond it. (estimate)

29questions here

6free pages

10concepts

Questions 1–5

1expert · hard
A service provider is running a dual-stack network with OSPFv2 and OSPFv3. The security team mandates that all routing protocol traffic be authenticated. The engineer has configured MD5 authentication for OSPFv2 and IPsec for OSPFv3. During a review, the engineer discovers that OSPFv3 adjacencies are forming but OSPFv2 adjacencies are not. Which is the most likely cause?
Select an answer first
2application · medium
A network administrator is configuring OSPFv3 on a Junos router and needs to secure the routing updates between two directly connected routers. The administrator wants to use IPsec for authentication. Which configuration step is required on the Junos device?
Select an answer first
3foundation · easy
Which Junos configuration statement is used to assign an interface to an OSPFv3 area?
Select an answer first
4expert · hard
A network engineer is configuring OSPFv3 on a Junos router and needs to ensure that OSPFv3 packets are authenticated. The engineer has decided to use IPsec. Which statement is correct regarding IPsec for OSPFv3 on Junos?
Select an answer first
5application · medium
An OSPFv3 router receives two routes to the same IPv6 prefix. One route is an Inter-Area-Prefix LSA from an ABR, and the other is an AS-External LSA from an ASBR. The router must select the best path. Which route will be preferred?
Select an answer first

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