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The JN0-664 exam is designed for network engineers who have at least three to five years of experience working in a service provider environment. Candidates who pass the JN0-664 exam are expected to have a deep understanding of service provider routing and switching technologies and be able to troubleshoot complex network issues. They should also be proficient in configuring and managing Juniper Networks' service provider routing and switching platforms.
The JN0-664 exam covers a wide range of topics including but not limited to, OSPF, ISIS, BGP, MPLS, LDP, L2VPN, L3VPN, RSVP, BFD, VRRP, and many more. It is a comprehensive exam that tests your understanding of the underlying technologies, as well as your ability to apply that knowledge in real-world scenarios. JN0-664 Exam consists of multiple-choice questions, and you will have four hours to complete it.
Achieving the Juniper JN0-664 certification demonstrates a high level of expertise in service provider network design, implementation, and management. Service Provider, Professional (JNCIP-SP) certification is recognized globally as a mark of excellence in the networking industry and can open up new career opportunities for professionals looking to advance their careers in service provider networks. With the growing demand for network professionals who can design, implement, and manage service provider networks, the Juniper JN0-664 certification is a valuable asset for any networking professional looking to enhance their skills and knowledge.
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NEW QUESTION # 88
Exhibit
A network is using IS-IS for routing.
In this scenario, why are there two TLVs shown in the exhibit?
Answer: D
Explanation:
Explanation
TLVs are tuples of (Type, Length, Value) that can be advertised in IS-IS packets. TLVs can carry different kinds of information in the Link State Packets (LSPs). IS-IS supports both narrow and wide metrics for link costs. Narrow metrics use a single octet to encode the link cost, while wide metrics use three octets. Narrow metrics have a maximum value of 63, while wide metrics have a maximum value of 16777215. If there are both narrow and wide metric devices in the topology, IS-IS will advertise two TLVs for each link: one with the narrow metric and one with the wide metric. This allows backward compatibility with older devices that only support narrow metrics12.
NEW QUESTION # 89
Referring to the exhibit, you are receiving the 192.168.0.0/16 route on both R3 and R4 from your EBGP neighbor. You must ensure that R1 and R2 receive both BGP routes from the route reflector.
In this scenario, which BGP feature should you configure to accomplish this behavior?
Answer: C
NEW QUESTION # 90
Referring to the exhibit, which two statements are correct about BGP routes on R3 that are learned from the ISP-A neighbor? (Choose two.)
Answer: A,C
NEW QUESTION # 91
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?
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.
NEW QUESTION # 92
What is the correct order of packet flow through configurable components in the Junos OS CoS features?
Answer: A
Explanation:
https://www.juniper.net/documentation/us/en/software/junos/cos/topics/concept/packet-flow-cos-process-cos-config-guide.html
NEW QUESTION # 93
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