Juniper Juniper Certifications JN0-662 Questions & Answers

• Question 51:

  How does Juniper Networks use selective BGP route damping to help stabilize the network?

  A. The damping decay half-life holds down peer links for a defined measure of time to prevent route table reconvergence.

  B. The damping max-suppress timer is set to the lowest possible value by default.

  C. The figure-of-merit value measures route stability by advertisement and withdrawal.

  D. Aggressive IGP hold timers prevent the routes from entering and exiting the BGP route selection process.

  Correct Answer: C

• Question 52:

  After committing the following configuration change on your MPLS VPN PE router, all MPLS VPN destinations become unreachable.

  

  Which additional configuration solves the issue?

  A.

  B.

  C.

  D.

  Correct Answer: C

• Question 53:

  You are currently running BGP-based VPLS and Layer 3 VPNs. You are asked to consolidate the services

  and deploy EVPN to replace the VPLS and Layer 3 VPN deployments.

  Which two EVPN route types will achieve this goal? (Choose two.)

  A. Type 5

  B. Type 4

  C. Type 2

  D. Type 7

  Correct Answer: AC

• Question 54:

  You are asked to deploy VPLS in your network as a new service for several customers, and you must identify the configuration and provisioning requirements for your customers. Which two statements are correct in this scenario? (Choose two.)

  A. CE interfaces facing the service prowler must be Ethernet interfaces.

  B. VLAN IDs defined on CE interfaces must be the same on both ends unless otherwise negotiated.

  C. CE interfaces facing the service provider must be Layer 3 interfaces.

  D. PE interfaces facing the core must have VPLS encapsulation enabled.

  Correct Answer: AB

• Question 55:

  Click the Exhibit button.

  

  After an acquisition, a customer experiences OSPF flooding during network consolidation and the router is experiencing performance problems. Referring to the exhibit, which OSPF feature set should you add or modify to increase capacity?

  A. traffic engineering

  B. OSPF authentication

  C. Bidirectional Forwarding Detection

  D. database protection

  Correct Answer: D

• Question 56:

  Click the Exhibit button.

  

  Referring to the exhibit, what must be added to the existing configuration to ensure that per-prefix load balancing occurs?

  A. multihop

  B. keep all

  C. multipath

  D. family inet unicast

  Correct Answer: C

• Question 57:

  You are troubleshooting a Layer 3 VPN issue. The VPN has been passing traffic successfully for some time, but now it is reported that traffic is no longer flowing. You look into the bgp.l3vpn.0 table and see newly hidden routes.

  What would be the cause of this problem?

  A. The LSP used to connect the PE routers is down.

  B. The connection from the PE to the customer is down.

  C. The BGP routes received from the customer are no longer reachable.

  D. The family inet-vpn parameter was deleted from the BGP configuration of the PE router.

  Correct Answer: D

• Question 58:

  Click the Exhibit button.

  

  The exhibit shows a BGP peering session for two PE routers. The BGP session is up, but IPv4 hosts in the Layer 3 VPN that use the BGP session are unable to communicate.

  What is the problem?

  A. The BGP peer does not support the add-path feature.

  B. The BGP peer does not support the restarter functionality.

  C. The local BGP router does not support Layer 2 VPN and Layer 3 VPN NLRI address families at the same time.

  D. There is a mismatch in the supported NLRI address families between the BGP peers.

  Correct Answer: D

• Question 59:

  Which two LSA types are permitted in an OSPF stub area? (Choose two.)

  A. Type 1

  B. Type 2

  C. Type 4

  D. Type 5

  Correct Answer: AB

  Stub areas can contain type 1, 2, and 3 LSAs. A default route is substituted for external routes.

• Question 60:

  Click the exhibit button.

  

  What would be the expected outcome from the configuration shown in the exhibit?

  A. The VPLS instance would use a control-word instead of a tunnel-services interface, or no-tunnelservices parameter.

  B. The VPLS instance would default to using no-tunnel-services because a tunnel-services interface was not specified.

  C. The VPLS instance would cycle through all virtual tunnel interfaces on the router to find one to use.

  D. The VPLS instance would cycle through all physical interfaces configured on the router to find one to use.

  Correct Answer: C