JN0-660 by Juniper Valid Free Exam Practice Test

Question 1

What must you do to use the Layer 2 interworking interface to connect a BGP Layer 2 VPN with an LDP Layer 2 circuit? (Choose two.)

A. You must enable the I2iw protocol. B. You must include the iw0 statement under the [edit interfaces] hierarchy. C. You must configure a policy importing the bgp.l2vpn.O routing table into the inet.0 routing table. D. You must have a Tunnel Services PIC installed to used the L2 interworking interface.

Correct Answer: A,B

Question 2

Click the Exhibit button.

Given the existing operational network shown in the exhibit, you now want to add a remote site for Customer B to the PE3 router. This change should not have an effect on the existing BGP sessions between the PE routers. Which Layer 3 VPN scaling mechanism allows PE3 to begin receiving Customer B routes?

A. route reflection B. route origin C. route target filtering D. route refresh

Correct Answer: D

Question 3

Click the Exhibit button.

Referring to the OSPF link metrics in the exhibit, which path will traffic from R6 take to reach R1?

A. R6, R5, R4, R1 B. R6, R3, R2, R1 C. R6, R5, R3, R2, R4, R1 D. R6, R3, R2, R4, R1

Correct Answer: B

Question 4

Refer to the exhibit.

A. Option B B. Option A C. Option D D. Option C

Correct Answer: C

Question 5

Click the Exhibit button

Given the topology in the exhibit, which two requirements must be met to allow multicast traffic to flow from AS65001 to AS65002? (Choose two.)

A. Source information must be relayed from AS65001 to AS65002. B. A TCP session must be formed between the RPs in AS65001 andAS65002. C. MSDP sessions must exist between all routers in AS65001. D. A full mesh of MBGP peering sessions must be formed within AS65001.

Correct Answer: A,B

Question 6

You are asked to design a Layer 2 VPN service between service provider networks that needs Ethernet transport capabilities. The VPN should support two or three endpoints. Which Layer 2 VPN technology should you propose?

A. BGP Layer 2 VPN B. LDP Layer 2 circuit, using the RFC 4448 Layer 2 frame format C. LDP-signaled VPLS D. BGP-signaled VPLS, using the RFC 4448 Layer 2 frame format

Correct Answer: D

Question 7

-- Exhibit - -- Exhibit -

Click the Exhibit button.
In the exhibit, an OSPF virtual link is established between R2 and R3. However, R4 cannot reach any external destinations.
What must you do you allow R4 to reach external destinations?

A. The virtual link must be configured under Area 1. B. Area 1 must be configured as a standard OSPF area. C. Area 1 must be configured as a stub area. D. Area 1 must be configured to use the Type 3 LSAs as the default LSA.

Correct Answer: B

Question 8

Click the Exhibit button.

Referring to the exhibit, which statement is true assuming BGP Layer 2 VPN signaling?

A. PE2 receives two BGP NLRI updates, each containing a remote site ID, label vc, and Layer 2 encapsulation. B. PE1 receives one BGP NLRI for VPN A containing only a remote site ID and a label offset value. C. PE1 receives two BGP NLRI updates, each containing a remote site ID, a label base, and Layer 2 encapsulation. D. PE2 receives one BGP NLRI update containing a remote site ID, a label base, and Layer 2 encapsulation.

Correct Answer: C

Question 9

Refer to the exhibit.

What does 192.168.1.2 represent?

A. The router ID of the remote router B. The address of the Area 0 virtual link C. The router ID of the local virtual ABR D. The address of the vltunnel interface

Correct Answer: A

Question 10

Click the Exhibit button.

You have an MPLS network and you have configured least-fill as your CSPF tiebreaker.
Using the information in the exhibit, which path will be used to signal a new LSP requiring 12 Mbps?

A. Path 2 B. Path 3 C. Path 1 D. Path 4

Correct Answer: D

Question 11

Click the Exhibit button.

You are building an interprovider VPN with ISP2 to support end-to-end connectivity for Customer A, as shown in the exhibit. For scalability reasons, the ASBR routers cannot exchange VPN routes for Customer A.
Which two configurations are needed to support this requirement? (Choose two.)

A. family inet-vpn on the ASBRs B. one VRF on the ASBRs for Customer A C. multihop EBGP between the PEs D. labeled-unicast on the ASBRs

Correct Answer: C,D

Question 12

You are asked to implement PIM-SM in your network, which consists of equipment from multiple vendors.
You must configure multiple RP discovery methods in this environment for redundancy purposes. MSDP cannot be used.
Which two statements are true? (Choose two.)

A. If you configure a static RP and auto-RP, auto-RP will be preferred and used by all routers. B. If you configure a static RP and a BSR, the BSR will be preferred and used by all routers. C. Auto-RP can be used to provide RP failover and load sharing between the elected RPs. D. The BSR can be used to provide RP failover and load sharing between the elected RPs.

Correct Answer: B,D

Question 13

Refer to the exhibit.

In a newly configured VPLS network, you see the output shown in the exhibit. The remote PE is
10.1.1.2. What is the cause for the OL status?

A. The remote PE is using the wrong route distinguisher, so the outgoing labels are incorrect. B. There is not a proper label-switched path to the remote PE, so there is no MPLS path to the remote PE. C. The VPLS site identifiers are not contiguous, causing label block allocation to run out of labels. D. The MPLS protocol family is not configured for interface fe-0/1/2.2, so the LDP adjacency is in an error state.

Correct Answer: C

Question 14

Click the Exhibit button

In the exhibit, a working Layer 3 VPN exists between all routers. No OSPF domain IDs are configured or attached in advertisements.
What can be configured on the PE routers to allow the internal OSPF routes in Area 3 to show up as summary (Type 3) LSAs in CE2?

A. Configure PE2 to have a different domain ID than PE1. B. Assign a domain ID of 1.1.1.1 to all routes injected into the Layer 3 VPN on PE1. C. The routes will show up as summary LSAs by default. D. Configure a sham link between PE1 and CE1.

Correct Answer: C

Juniper Service Provider Routing and Switching, Professional (JNCIP-SP) - JN0-660 Exam Practice Test