JN0-664 TEST LABS & BRAINDUMPS JN0-664 DOWNLOADS

JN0-664 Test Labs & Braindumps JN0-664 Downloads

JN0-664 Test Labs & Braindumps JN0-664 Downloads

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To provide ease and accessibility, Actual4dump offers Juniper JN0-664 exam questions in PDF format. This format is easy to understand, and you can download the JN0-664 exam questions pdf file on all smart devices. You can prepare for the Service Provider, Professional (JNCIP-SP) (JN0-664) exam anytime, anywhere using Actual4dump JN0-664 exam dumps.

The JN0-664 exam consists of 65 multiple-choice questions, and candidates are given 120 minutes to complete the exam. JN0-664 exam is available in English and Japanese, and it can be taken at any Pearson VUE testing center worldwide.

The JN0-664 exam is a comprehensive test that covers a wide range of topics related to service provider routing and switching. JN0-664 Exam covers key concepts such as the Border Gateway Protocol (BGP), Intermediate System-to-Intermediate System (IS-IS), Multiprotocol Label Switching (MPLS), and Virtual Private LAN Service (VPLS). In addition, the exam also tests the candidate's knowledge of Junos OS, network automation, and network management.

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Braindumps JN0-664 Downloads & Latest JN0-664 Test Blueprint

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The JN0-664 Exam is a 65-question, multiple-choice exam that can be taken online or at a testing center. JN0-664 exam is rigorous and requires a high degree of knowledge and skill in service provider networking. However, with the right preparation and practice, you can easily pass the exam and earn your certification.

Juniper Service Provider, Professional (JNCIP-SP) Sample Questions (Q96-Q101):

NEW QUESTION # 96
Exhibit

R4 is directly connected to both RPs (R2 and R3) R4 is currently sending all ,o,ns upstream to R3 but you want all joins to go to R2 instead Referring to the exhibit, which configuration change will solve this issue?

  • A. Change the local address on R2 to be higher than R3.
  • B. Change the group-range to be more specific on R2 than R3.
  • C. Change the bootstrap priority on R2 to be higher than R3
  • D. Change the default route in inet.2 on R4 from R3 as the next hop to R2

Answer: B

Explanation:
The issue arises because R3's group-range (224.1.1.0/28) is more specific than R2's group-range (224.1.1.0/24). In PIM bootstrap (BSR), the RP with the longest prefix (most specific group-range) is preferred, regardless of priority. Even though R3 has a higher bootstrap priority (210 vs. R2's 200), its more specific /28 group-range takes precedence for groups within 224.1.1.0/28.
Why Option D is Correct:
To force R4 to use R2 for all joins, R2's group-range must be more specific than R3's. For example:
If R2's group-range is changed to 224.1.1.0/28 (same as R3) but with a higher priority, R2 would win (priority is compared only when group-ranges are equal).
If R2's group-range is changed to 224.1.1.0/29 (more specific than /28), it will override R3's /28 for groups in the /29 range.
The key is prefix specificity, which overrides priority in BSR elections.
Why Other Options Are Incorrect:
A . Change bootstrap priority on R2 to be higher than R3:
Priority is evaluated only when group-ranges are identical. Since R3's group-range (/28) is more specific than R2's (/24), R3 will still win for groups in 224.1.1.0/28, even if R2's priority is higher.
B . Change the default route in inet.2 on R4:
RPF routes (inet.2) determine how traffic reaches the RP, but they do not influence RP election logic (BSR priority/group-range).
C . Change R2's local address to be higher than R3's:
The RP address is a tiebreaker only if priorities and group-ranges are equal. Since R3's group-range is more specific, this change has no impact.
Key Takeaways:
BSR RP Election Order:
Longest group prefix (most specific).
Highest priority (if prefixes are equal).
Highest RP address (if prefixes and priorities are equal).
To override R3, R2 must advertise a more specific group-range (e.g., /28 or smaller) to ensure it is selected for the desired multicast groups.
Reference:
Juniper PIM Sparse Mode and BSR Configuration.


NEW QUESTION # 97
An interface is configured with a behavior aggregate classifier and a multifield classifier How will the packet be processed when received on this interface?

  • A. The packet will be processed by the BA classifier first, then the MF classifier.
  • B. The packet will be processed by the MF classifier first, then the BA classifier.
  • C. The packet will be forwarded with no classification changes.
  • D. The packet will be discarded.

Answer: A

Explanation:
When a Juniper device receives a packet on an interface with both a Behavior Aggregate (BA) classifier and a Multifield (MF) classifier, Junos OS follows a specific processing order to apply Class of Service (CoS).
Understanding the Classifiers in Junos CoS
Behavior Aggregate (BA) Classifier
Uses packet headers (DSCP, IP precedence, or MPLS EXP bits) to classify traffic into forwarding classes.
Applied at the ingress interface.
Example: A packet with DSCP 46 (Expedited Forwarding) is mapped to a high-priority queue.
Multifield (MF) Classifier
Uses match conditions (like source/destination IP, port numbers, protocol types) to classify traffic.
Typically used for more granular classification beyond what BA can provide.
Junos Processing Order:
When both BA and MF classifiers are configured on an interface, Junos first applies the BA classifier, then the MF classifier.
MF classifier can override the BA classification if necessary.
Evaluating the Answer Choices
✅ B. The packet will be processed by the BA classifier first, then the MF classifier.
Correct, because Junos first applies BA classification based on DSCP/MPLS EXP bits.
After BA classification, the MF classifier is applied, which can refine or override the BA classification.
❌ A. The packet will be discarded.
Incorrect, because classification does not drop packets unless explicitly configured with a filter or policing action.
❌ C. The packet will be forwarded with no classification changes.
Incorrect, because both classifiers are applied in a specific order, meaning classification changes will occur.
❌ D. The packet will be processed by the MF classifier first, then the BA classifier.
Incorrect, because BA classification is always applied first, followed by MF classification.
Final answer: ✅ B. The packet will be processed by the BA classifier first, then the MF classifier.
Official Juniper Reference:
"When both BA and MF classifiers are applied on an interface, Junos OS first classifies packets using the BA classifier before applying the MF classifier."


NEW QUESTION # 98
Which statement is true regarding BGP FlowSpec?

  • A. It verifies that the source IP of the incoming packet has a resolvable route in the routing table
  • B. It uses dynamically created routing policies to protect a network from denial-of-service attacks
  • C. It uses a remote triggered black hole to protect a network from a denial-of-service attack.
  • D. It is used to protect a network from denial-of-service attacks dynamically

Answer: B

Explanation:
BGP FlowSpec is a feature that extends the Border Gateway Protocol (BGP) to enable routers to exchange traffic flow specifications, allowing for more precise control of network traffic. The BGP FlowSpec feature enables routers to advertise and receive information about specific flows in the network, such as those originating from a particular source or destined for a particular destination. Routers can then use this information to construct traffic filters that allow or deny packets of a certain type, rate limit flows, or perform other actions1. BGP FlowSpec can also help in filtering traffic and taking action against distributed denial of service (DDoS) attacks by dropping the DDoS traffic or diverting it to an analyzer2. BGP FlowSpec rules are internally converted to equivalent Cisco Common Classification Policy Language (C3PL) representing corresponding match and action parameters2. Therefore, BGP FlowSpec uses dynamically created routing policies to protect a network from denial-of-service attacks.
References: 1: https://www.networkingsignal.com/what-is-bgp-flowspec/ 2:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16/irg-xe-16-book/bgp-flowspe


NEW QUESTION # 99
Exhibit

The network shown in the exhibit is based on IS-IS
Which statement is correct in this scenario?

  • A. The area address is two bytes.
  • B. The routers are using unnumbered interfaces
  • C. The NSEL byte for Area 0001 is 00.
  • D. The system IDofR1_2 is 192.168.16.1

Answer: C

Explanation:
IS-IS is an interior gateway protocol that uses link-state routing to exchange routing information among routers within a single autonomous system. IS-IS uses two types of addresses to identify routers and areas: system ID and area address. The system ID is a unique identifier for each router in an IS-IS domain. The system ID is 6 octets long and can be derived from the MAC address or manually configured. The area address is a variable-length identifier for each area in an IS-IS domain. The area address can be 1 to 13 octets long and is composed of high-order octets of the address. An IS-IS instance may be assigned multiple area addresses, which are considered synonymous. Multiple synonymous area addresses are useful when merging or splitting areas in the domain1. In this question, we have a network based on IS-IS with four routers (R1_1, R1_2, R2_1, and R2_2) belonging to area 0001. The area address for area 0001 is 49.0001. The NSEL byte for area 0001 is the last octet of the address, which is 01. The NSEL byte stands for Network Service Access Point Selector (NSAP Selector) and indicates the type of service requested from the network layer2. Therefore, the correct statement in this scenario is that the NSEL byte for area 0001 is 01.


NEW QUESTION # 100
Which three mechanisms are used by Junos platforms to evaluate incoming traffic for CoS purposes? (Choose three )

  • A. fixed classifiers
  • B. multifield classifiers
  • C. rewrite rules
  • D. behavior aggregate classifiers
  • E. traffic shapers

Answer: A,B,D

Explanation:
Explanation
Junos platforms use different mechanisms to evaluate incoming traffic for CoS purposes, such as:
* Behavior aggregate classifiers: These classifiers use a single field in a packet header to classify traffic into different forwarding classes and loss priorities based on predefined or user-defined values.
* Fixed classifiers: These classifiers use a fixed field in a packet header to classify traffic into different forwarding classes and loss priorities based on predefined values.
* Multifield classifiers: These classifiers use multiple fields in a packet header to classify traffic into different forwarding classes and loss priorities based on user-defined values and filters.
Rewrite rules and traffic shapers are not used to evaluate incoming traffic for CoS purposes, but rather to modify or shape outgoing traffic based on CoS policies.


NEW QUESTION # 101
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