In a Layer 3 VPN, what is the primary purpose of a sham link between two PE routers that both have a backdoor connection to the same customer site?

To provide a backup path for the backdoor link if the MPLS VPN fails

To encrypt OSPF traffic between the PE routers and the customer edge routers

To enable the PE routers to exchange OSPF routes over the MPLS backbone as if they were directly connected

To replace the need for MP-BGP in the VPN backbone

What is a common issue when troubleshooting inter-provider VPN Option B?

Incorrect OSPF area configuration

Missing label allocation for VPN routes

Mismatched VRF names between providers

Mismatched MTU on the inter-provider link

In the carrier-of-carriers VPN model, what does the customer carrier provide to its own customers?

A Layer 3 VPN service using the underlying provider's MPLS network

A direct internet access service

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

Domain 6Objective 2

Advanced Layer 3 VPN Features JN0-664 Practice Questions (Page 3)

Part of the Layer 3 VPNs domain, which makes up ~8% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~3–5 in this domain), expect 1–2 from this objective — we provide 24 practice questions to prepare you well beyond it. (estimate)

24questions here

5free pages

11concepts

Questions 11–15

11foundation · easy
Which address family is used in MP-BGP to carry IPv6 VPN routes in a Layer 3 VPN?
Select an answer first
12foundation · easy
In a Layer 3 VPN, what is the primary purpose of a sham link between two PE routers that both have a backdoor connection to the same customer site?
Select an answer first
13expert · hard
A service provider is designing an MVPN solution for a customer that requires multicast support. The customer has sites that are connected via a mix of MPLS and GRE tunnels. The provider wants to use a single data plane encapsulation method that can work over both. Which data plane encapsulation method should be used?
Select an answer first
14foundation · easy
What is a common issue when troubleshooting inter-provider VPN Option B?
Select an answer first
15foundation · easy
In the carrier-of-carriers VPN model, what does the customer carrier provide to its own customers?
Select an answer first

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Advanced Layer 3 VPN Features JN0-664 Practice Questions (Page 3)

Questions 11–15

Which address family is used in MP-BGP to carry IPv6 VPN routes in a Layer 3 VPN?

In a Layer 3 VPN, what is the primary purpose of a sham link between two PE routers that both have a backdoor connection to the same customer site?

What is a common issue when troubleshooting inter-provider VPN Option B?

In the carrier-of-carriers VPN model, what does the customer carrier provide to its own customers?

Keep studying — Layer 3 VPNs