What is the primary function of PPP interworking in Layer 2 VPNs?

To route IP packets between VPNs

To encapsulate PPP frames over Layer 2 VPNs

What is the primary function of Ethernet interworking in Layer 2 VPNs?

To route IP packets between VPNs

To transparently bridge Ethernet frames between different Layer 2 VPN types

To map VLAN tags between different encapsulations

An engineer has configured VLAN interworking between two Layer 2 VPNs. The engineer notices that traffic is being forwarded, but the VLAN tags are not being mapped correctly. The engineer has verified that the VLAN mappings are configured correctly on both PEs. What should the engineer check next?

The encapsulation type on the pseudowires

The IP routing table on the PEs

The BGP route targets on the PEs

The MAC address table on the PEs

What is the primary purpose of targeted LDP sessions in LDP autodiscovery for VPLS?

To discover the MAC addresses of customer devices

To provide a backup path for the IGP

To encrypt the VPLS data traffic

To exchange VPLS labels and establish pseudowires between PE routers

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

Domain 7Objective 4

Autodiscovery and Interworking JN0-664 Practice Questions (Page 5)

Part of the Layer 2 VPNs domain, which makes up ~16% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~6–10 in this domain), expect 1–1 from this objective — we provide 26 practice questions to prepare you well beyond it. (estimate)

26questions here

6free pages

10concepts

Questions 21–25

21foundation · easy
What is the primary function of PPP interworking in Layer 2 VPNs?
Select an answer first
22foundation · easy
What is the primary function of Ethernet interworking in Layer 2 VPNs?
Select an answer first
23expert · hard
An engineer has configured VLAN interworking between two Layer 2 VPNs. The engineer notices that traffic is being forwarded, but the VLAN tags are not being mapped correctly. The engineer has verified that the VLAN mappings are configured correctly on both PEs. What should the engineer check next?
Select an answer first
24foundation · easy
Which protocol is commonly used for VPWS autodiscovery?
Select an answer first
25foundation · easy
What is the primary purpose of targeted LDP sessions in LDP autodiscovery for VPLS?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to JN0-664

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by Juniper Networks. “JN0-664” is a trademark of its owner, used for identification only.