Exam Details

  • Exam Code
    :JN0-660
  • Exam Name
    :Service Provider Routing and Switching, Professional
  • Certification
    :Juniper Certifications
  • Vendor
    :Juniper
  • Total Questions
    :278 Q&As
  • Last Updated
    :Aug 21, 2025

Juniper Juniper Certifications JN0-660 Questions & Answers

  • Question 251:

    Which two statements correctly describe BGP operation? (Choose two.)

    A. IBGP does not advertise routes learned from other IBGP neighbors.

    B. IBGP advertises routes learned from other IBGP neighbors.

    C. EBGP advertises routes learned from other IBGP or EBGP neighbors.

    D. EBGP does not advertise routes learned from other EBGP neighbors.

  • Question 252:

    Click the Exhibit button.

    Two PE routers in your Layer 3 VPN are not advertising customer VPN routes to each other. Referring to the output in the exhibit, which configuration parameter is missing?

    A. family inet on PE1

    B. family inet on PE2

    C. family inet-vpn on PE1

    D. family inet-vpn on PE2

  • Question 253:

    Click the Exhibit button.

    In the exhibit, on which label value does PE1 expect to receive traffic from CE3 for VPN A?

    A. 2002

    B. 3001

    C. 3002

    D. 2001

  • Question 254:

    You have assigned target:65432:100 as the route target for Customer A's BGP Layer 2 VPN. The PE1 router VRF is configured with vrf-target export target:65432:100.Which configuration on PE2 correctly assigned Customer A's routes to their VRF?

    A. vrf-target target:65432:100

    B. route-target target:65432:100

    C. vrf-target export target:65432:100

    D. route-target export target:65432:100

  • Question 255:

    Click the Exhibit button.

    You are the administrator of AS 65000. In the exhibit, there are four links between your network (AS 65000) and your upstream provider (AS 65001). You have an export policy on all of your routers to advertise your routes such that: Router A. MED 100, AS Path (65000), Origin 1 Router B. MED 100, AS Path (65000 65000), Origin 0 Router C. MED 50, AS Path (65000 65000), Origin 1 Router D. MED 50, AS Path (65000), Origin 0

    Through which link will traffic from the Web server enter your network (AS 65000)?

    A. Router A

    B. Router B

    C. Router C

    D. Router D

  • Question 256:

    Click the Exhibit button.

    Based on the exhibit, what do you expect to find in the configuration on R1 and R4?

    A. a policy leaking level 1 routes into level 2

    B. a policy leaking level 2 routes into level 1

    C. a policy setting the attached bit on level 2 routes

    D. a policy setting the attached bit on level 1 routes

  • Question 257:

    Your OSPF network includes an NSSA. Which LSA type is injected into the NSSA by the ASBR?

    A. Type 3

    B. Type 5

    C. Type 7

    D. Type 9

  • Question 258:

    Click the Exhibit button.

    Your router should be configured with a rewrite rule which alters the default behavior of expedited-forwarding as shown in the exhibit. Which configuration is correct?

    A. Option A

    B. Option B

    C. Option C

    D. Option D

  • Question 259:

    Which operational mode command displays the number of configured forwarding classes?

    A. show interfaces queue ge-1/0/0

    B. show interfaces terse

    C. show class-of-service interface

    D. show forwarding classes

  • Question 260:

    Your multicast receivers are indirectly connected to an MX Series router. The receivers need to join multicast group 224.2.2.2. What must be configured in IGMP to receive report messages from receivers that are multiple hops away?

    A. By default, IGMP accepts report messages from indirectly connected receivers.

    B. Promiscuous mode must be enabled in IGMP.

    C. Promiscuous mode must be disabled in IGMP.

    D. DVMRP protocol must be configured.

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