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[General] Quiz 2026 High Pass-Rate JN0-664: Service Provider, Professional (JNCIP-SP) Reli

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【General】 Quiz 2026 High Pass-Rate JN0-664: Service Provider, Professional (JNCIP-SP) Reli

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Juniper JN0-664 Exam is a professional-level certification exam that validates the candidate's expertise in configuring and troubleshooting Junos-based service provider routing platforms and networks. JN0-664 exam covers a wide range of topics, including OSPF, BGP, IS-IS, MPLS, Layer 2 VPNs, Layer 3 VPNs, multicast, and Class of Service (CoS). Passing the exam and getting the JNCIP-SP certification is a valuable asset for service provider professionals seeking to advance their careers in the networking industry.
Juniper Service Provider, Professional (JNCIP-SP) Sample Questions (Q64-Q69):NEW QUESTION # 64
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.)
  • A. Configure MSDP on each RP router.
  • B. Configure anycast PIM with the rp-set statement on each RP router.
  • C. Configure MSDP on each source DR router.
  • D. Configure anycast PIM with the rp-set statement on each source DR router.
Answer: A,B
Explanation:
In a PIM Sparse Mode (PIM-SM) domain, Anycast RP is used for load balancing and redundancy by configuring multiple RPs with the same IP address. However, for active multicast sources to be shared between RPs, an additional mechanism is needed since PIM-SM does not automatically synchronize sources between RPs.
Evaluating the Answer Choices
Option A: "Configure MSDP on each RP router." #
* Multicast Source Discovery Protocol (MSDP) is required in an Anycast RP setup to share active source information between RPs.
* MSDP allows RPs to exchange source-active (SA) messages, ensuring that multicast receivers in different regions can still receive traffic from sources registered with different RPs.
* Juniper Documentation confirms that MSDP is used to synchronize active sources across multiple RPs in an Anycast RP deployment.
* # This is a correct answer.
Option B: "Configure anycast PIM with the rp-set statement on each RP router." #
* Anycast PIM allows multiple RPs to share the same IP address, and the rp-set statement is used to define the set of Anycast RPs.
* This enables receivers and sources to register with the closest RP.
* However, Anycast PIM alone does not share active source information between RPs; MSDP is still needed for that.
* The combination of Anycast PIM (rp-set) and MSDP is the correct approach.
* # This is a correct answer.

NEW QUESTION # 65
Exhibit

A network designer would like to create a summary route as shown in the exhibit, but the configuration is not working.
Which three configuration changes will create a summary route? (Choose three.)
  • A. set protocols isis import summary-v6
  • B. set policy-options policy-statement leak-v6 term DC-routes from route-filter 2001:db9:a:faOO::/61 exact
  • C. set policy-options policy-statement leak-v6 term DC-routes then reject
  • D. delete protocols isis export summary-v6
  • E. delete policy-options policy-statement leak-v6 term DC-routes from route-filter 2001: db9 :a: fa00 : :/6l longer
Answer: B,D,E
Explanation:
To create a summary route for IS-IS, you need to configure a policy statement that matches the prefixes to be summarized and sets the next-hop to discard. You also need to configure a summary-address statement under the IS-IS protocol hierarchy that references the policy statement. In this case, the policy statement leak-v6 is trying to match the prefix 2001:db9:a:fa00::/61 exactly, but this prefix is not advertised by any router in the network. Therefore, no summary route is created. To fix this, you need to delete the longer keyword from the route-filter term and change the prefix length to /61 exact. This will match any prefix that falls within the /61 range. You also need to delete the export statement under protocols isis, because this will export all routes that match the policy statement to other IS-IS routers, which is not desired for a summary route.

NEW QUESTION # 66
Which two statements are correct regarding bootstrap messages that are forwarded within a PIM sparse mode domain? (Choose two.)
  • A. Bootstrap messages distribute RP information dynamically during an RP election.
  • B. Bootstrap messages are forwarded only to routers that explicitly requested the messages within the PIM sparse-mode domain
  • C. Bootstrap messages are forwarded to all routers within a PIM sparse-mode domain.
  • D. Bootstrap messages are used to notify which router is the PIM RP
Answer: A,C
Explanation:
Explanation
Bootstrap messages are PIM messages that are used to distribute rendezvous point (RP) information dynamically during an RP election. Bootstrap messages are sent by bootstrap routers (BSRs), which are routers that are elected to perform the RP discovery function for a PIM sparse-mode domain. Bootstrap messages contain information about candidate RPs and their multicast groups, as well as BSR priority and hash mask length. Bootstrap messages are forwarded to all routers within a PIM sparse-mode domain using hop-by-hop flooding.

NEW QUESTION # 67
Exhibit

You have MAC addresses moving in your EVPN environment
Referring to the exhibit, which two statements are correct about the sequence number? (Choose two)
  • A. It identifies MAC addresses that should be discarded.
  • B. It resolves conflicting MAC address ownership claims.
  • C. It is advertised using a Type 2 message
  • D. It helps the local PE to identify the latest advertisement.
Answer: C,D
Explanation:
In an EVPN (Ethernet Virtual Private Network) environment, MAC address mobility is a critical feature that allows devices to move across different locations while ensuring the network consistently tracks their MAC addresses. Let's break down the components in the exhibit and analyze the correct statements.
Understanding MAC Mobility and Sequence Numbers in EVPN
In EVPN, MAC mobility is managed through sequence numbers that are included in Type 2 MAC/IP advertisements.
* The sequence number tracks MAC movement events and is used to determine the most recent update when a MAC address appears on different PEs (Provider Edge devices).
* When a MAC address moves between locations, the EVPN PEs increment the sequence number and advertise it to resolve conflicts and determine which PE has the most up-to-date information.
Now, Let's Review the Options:
# C. It helps the local PE to identify the latest advertisement.
* Correct:The sequence number plays a key role in resolving MAC address conflicts. If multiple PEs advertise the same MAC address, the PE compares the sequence numbers to determine which update is the latest.
* A higher sequence number indicates a more recent MAC update.
# D. It is advertised using a Type 2 message.
* Correct:EVPN MAC/IP advertisements use BGP EVPN Type 2 messages to carry MAC addresses, IP addresses (optional), and their associated sequence numbers.
* Type 2 advertisements are used to track MAC mobility and IP reachability information in the EVPN.
Why the Other Options Are Incorrect:
# A. It identifies MAC addresses that should be discarded.
* Incorrect:The sequence number doesn't identify MAC addresses that need to be discarded.Instead, it resolves conflicts by determining the most recent MAC address advertisement based on the highest sequence number.
# B. It resolves conflicting MAC address ownership claims.
* Partially true, but misleading:While it's true that sequence numbers are used in conflict resolution, the sequence number itself doesn't directly resolve ownership claims. It only helps determine which advertisement is more recent. The actual conflict resolution happens through the comparison of the advertisements and sequence numbers.
# C. It helps the local PE to identify the latest advertisement.
# D. It is advertised using a Type 2 message.
Reference from Juniper Documentation:
* Juniper EVPN Configuration Guide:
"In EVPN MAC/IP advertisements, sequence numbers track the mobility of MAC addresses and are used to resolve conflicts when the same MAC address is advertised by multiple PEs. The PE with the higher sequence number has the most recent information."
# Juniper BGP EVPN Mobility Documentation

NEW QUESTION # 68
Which two statements about the configuration shown in the exhibit are correct? (Choose two.)

  • A. This VPN connects customer sites that use the same AS number.
  • B. A Layer 3 VPN is configured.
  • C. A Layer 2 VPN is configured.
  • D. This VPN connects customer sites that use different AS numbers.
Answer: A,B

NEW QUESTION # 69
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