[Sep-2026] The Best JNCIP-SP JN0-664 Professional Exam Questions [Q59-Q76]

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[Sep-2026] The Best JNCIP-SP JN0-664 Professional Exam Questions

Try 100% Updated JN0-664 Exam Questions [2026]

The JN0-664 certification exam is designed to test the skills and knowledge required to configure and troubleshoot Junos-based service provider routing and switching networks. JN0-664 exam covers a wide range of topics, including OSPF, BGP, IS-IS, MPLS, Layer 2 VPNs, Layer 3 VPNs, multicast, QoS, and security. JN0-664 exam also tests candidates’ knowledge of Junos automation and scripting tools.

NEW QUESTION 59
You are configuring anycast RP for load balancing and redundancy in your PIM-SM domain. You want to share active sources between RPs.
In this scenario, what are two solutions that will accomplish this task? (Choose two.)

Configure MSDP on each source DR router.

Configure MSDP on each RP router.

Configure anycast PIM with the rp-set statement on each RP router.

Configure anycast PIM with the rp-set statement on each source DR router.

NEW QUESTION 60
You are asked to protect your company’s customers from amplification attacks.
In this scenario, what is Juniper’s recommended protection method?

ASN prepending

BGP FlowSpec

destination-based Remote Triggered Black Hole

unicast Reverse Path Forwarding

NEW QUESTION 61
In which two ways does OSPF prevent routing loops in multi-area networks? (Choose two.)

All areas are required to connect as a full mesh.

All areas are required to connect to area 0.

The LFA algorithm prunes all looped paths within an area.

The SPF algorithm prunes looped paths within an area.

NEW QUESTION 62
Which two statements about IS-IS are correct? (Choose two.)

PSNPs are flooded periodically.

PSNPs contain only descriptions of LSPs.

CSNPs are flooded periodically

CSNPs contain only descriptions of LSPs.

NEW QUESTION 63
Which two statements are correct about IS-IS interfaces? (Choose two.)

If a broadcast interface is in both L1 and L2, one combined hello message is sent for both levels.

If a point-to-point interface is in both L1 and L2, separate hello messages are sent for each level.

If a point-to-point interface is in both L1 and L2, one combined hello message is sent for both levels.

If a broadcast interface is in both L1 and L2, separate hello messages are sent for each level

NEW QUESTION 64
Exhibit

You are attempting to summarize routes from the 203.0.113.128/25 IP block on R8 to AS 64500. You implement the export policy shown in the exhibit and all routes from the routing table stop being advertised.
In this scenario, which two steps would you take to summarize the route in BGP? (Choose two.)

Remove the from protocol bgp command from the export policy.

Add the set protocols bgp family inet unicast add-path command to allow additional routes to the RIB tables. –

Add the set routing-options static route 203.0.113.123/25 discard command.

Replace exact in the export policy with orlonger.

NEW QUESTION 65
You are a network architect for a service provider and want to offer Layer 2 services to your customers. You want to use EVPN for Layer 2 services in your existing MPLS network.
Which two statements are correct in this scenario? (Choose two.)

Segment routing must be configured on all PE routers.

EVPN uses Type 2 routes to advertise MAC address and IP address pairs learned using ARP snooping.

EVPN uses Type 3 routes to join a multicast tree to flood traffic.

VXLAN must be configured on all PE routers.

NEW QUESTION 66
Which origin code is preferred by BGP?

External

Null

Incomplete

Internal

NEW QUESTION 67
Which origin code is preferred by BGP?

Internal

External

Incomplete

Null

NEW QUESTION 68
Your organization manages a Layer 3 VPN for multiple customers To support advanced route than one BGP community on advertised VPN routes to remote PE routers.
Which routing-instance configuration parameter would support this requirement?

vrf-export

vrf-import

vrf-target export

vrf-target import

NEW QUESTION 69
Exhibit

Based on the configuration contents shown in the exhibit, which statement is true?

Joins for group 224.7.7.7 are rejected if the source address is 192.168.100.10

Joins for any group are accepted if the group count value is less than 25.

Joins for group 224.7.7.7 are always rejected, regardless of the group count.

Joins for group 224.7.7.7 are accepted if the group count is less than 25

NEW QUESTION 70
Which two statements are correct about a sham link? (Choose two.)

It creates an OSPF multihop neighborship between two PE routers.

It creates a BGP multihop neighborship between two PE routers.

The PEs exchange Type 1 OSPF LSAs instead of Type 3 OSPF LSAs for the L3VPN routes

The PEs exchange Type 3 OSPF LSAs instead of Type 1 OSPF LSAs for the L3VPN routes.

NEW QUESTION 71
Which origin code is preferred by BGP?

Internal

External

Incomplete

Null

NEW QUESTION 72
When building an interprovider VPN. you notice on the PE router that you have hidden routes which are received from your BGP peer with family inet labeled-unicast configured.
Which parameter must you configure to solve this problem?

Under the family inet labeled-unicast hierarchy, add the resolve-vpn parameter.

Under the protocols mpls hierarchy, add the traffic-engineering parameter.

Under the family inet labeled-unicast hierarchy, add the explicit null parameter.

Under the protocols ospf hierarchy, add the traffic-engineering parameter.

NEW QUESTION 73
In IS-IS, which two statements are correct about the designated intermediate system (DIS) on a multi-access network segment? (Choose two)

A router with a priority of 10 wins the DIS election over a router with a priority of 1.

A router with a priority of 1 wins the DIS election over a router with a priority of 10.

On the multi-access network, each router forms an adjacency to every other router on the segment

On the multi-access network, each router only forms an adjacency to the DIS.

NEW QUESTION 74
Exhibit

Referring to the exhibit, which three statements are correct about route 10 0 0.0/16 when using the default BGP advertisement rules’? (Choose three.)

R2 will advertise 10.0.0.0/16 to R4 with 172.16.1.1 as the next hop.

R2 will advertise 10.0.0.0/16 to R3 with 192.168.1.1 as the next hop.

R1 will advertise 10.0.0.0/16 to R2 with 192.168.1.1 as the next hop.

R1 will prepend AS 65531 when advertising 10.0.0.0/16 to R2.

R4 will advertise 10.0.0.0/16 to R6 with 172.16.1.1 as the next hop.

NEW QUESTION 75
Exhibit

Referring to the exhibit, which three statements are correct about route 10 0 0.0/16 when using the default BGP advertisement rules’? (Choose three.)

R1 will prepend AS 65531 when advertising 10 0.0 0/16 to R2.

R1 will advertise 10.0.0.0/16 to R2 with 192 168 1 1 as the next hop.

R2 will advertise 10.0.0.0/16 to R3 with 192.168.1 1 as the next hop

R4 will advertise 10 0.0 0/16 to R6 with 172.16 1 1 as the next hop

R2 will advertise 10.0.0.0/16 to R4 with 172.16.1.1 as the next hop

NEW QUESTION 76
What is the correct order of packet flow through configurable components in the Junos OS CoS features?

Multifield Classifier -> Behavior Aggregate Classifier -> Input Policer -> Forwarding Policy Options -> Fabric Scheduler -> Output Policer -> Rewrite Marker -> Scheduler/Shaper/RED

Behavior Aggregate Classifier -> Multifield Classifier -> Input Policer -> Forwarding Policy Options -> Fabric Scheduler -> Output Policer -> Scheduler/Shaper/RED -> Rewrite Marker

Behavior Aggregate Classifier -> Input Policer -> Multifield Classifier -> Forwarding Policy Options -> Fabric Scheduler -> Output Policer -> Scheduler/Shaper/RED -> Rewrite Marker

Behavior Aggregate Classifier -> Multifield Classifier -> Input Policer -> Forwarding Policy Options -> Fabric Scheduler -> Scheduler/Shaper/RED -> Output Policer -> Rewrite Marker

The JN0-664 certification exam covers a range of topics related to service provider routing and switching technologies, including Layer 2 and Layer 3 VPNs, multicast protocols, BGP, OSPF, IS-IS, and MPLS. Candidates will also be tested on their understanding of various Juniper Networks devices, including routers, switches, and firewalls.

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