Layer 3 VPN Configuration and Monitoring JN0-664 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which statement correctly describes the purpose of a route target in a Layer 3 VPN?

   • AIt uniquely identifies a VRF in the service provider network.
   • BIt determines the encapsulation type used for VPN traffic.
   • CIt specifies the next-hop IP address for VPN routes.
   • DIt defines which VPN-IPv4 routes are imported into and exported from a VRF.
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2. 2application · medium

   A customer edge (CE) router is connected to a provider edge (PE) router. The CE router is running OSPF, and the PE router has a VRF configured for this customer. The engineer needs to exchange routes between the CE and the PE within the VRF. What configuration is required on the PE router?

   • AConfigure BGP between the PE and CE routers.
   • BConfigure OSPF within the VRF routing instance on the PE router.
   • CConfigure OSPF in the global routing instance on the PE router.
   • DConfigure a static route in the VRF pointing to the CE router.
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4. 3application · medium

   A network engineer is verifying the operation of a Layer 3 VPN. The engineer needs to confirm that VPN-IPv4 routes are being exchanged between PE routers. Which command should the engineer use?

   • Ashow route advertising-protocol bgp neighbor-address
   • Bshow route table inet.0
   • Cshow interfaces terse
   • Dshow ospf neighbor
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5. 4application · medium

   A service provider is onboarding a new customer that has two sites. The customer requires that Site A and Site B be able to communicate with each other, but they must not be reachable from any other customer's sites. The provider's PE routers already have MP-BGP VPN-IPv4 sessions established. The engineer creates a VRF named 'custA' on both PE routers and assigns the same route distinguisher to each. What additional configuration is required to ensure the two sites can exchange routes with each other?

   • AConfigure a static route on each PE router pointing to the customer edge router.
   • BConfigure a unique route distinguisher on each PE router's VRF instance.
   • CConfigure the VRF instance to import all routes from the inet.0 routing table.
   • DConfigure the same import and export route targets on both PE routers' VRF instances.
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6. 5foundation · easy

   Which configuration statement is used on a Junos PE router to define a VRF instance?

   • Aset routing-options vrf CUST-A
   • Bset interfaces ge-0/0/1 unit 0 vrf CUST-A
   • Cset routing-instances CUST-A instance-type vrf
   • Dset protocols bgp vrf CUST-A
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