REQUEST YOUR SAMPLE MATERIALS OF JN0-664

Request Your Sample Materials of JN0-664

Request Your Sample Materials of JN0-664

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Juniper JN0-664 exam, also known as the Service Provider, Professional (JNCIP-SP) certification, is designed to test the knowledge and skills of network engineers in the service provider industry. JN0-664 exam is intended to validate the candidate's expertise in configuring, troubleshooting, and maintaining Juniper Networks' service provider routing and switching platforms. Passing the JN0-664 exam is a significant achievement for network engineers looking to advance their careers in the service provider industry.

The JN0-664 Exam covers a range of topics, including advanced routing protocols such as OSPF, IS-IS, BGP, and MPLS, as well as service provider-specific technologies such as LDP, RSVP, and VPLS. Candidates are also expected to have a strong understanding of network security, high availability, network automation, and network management best practices.

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To achieve the Juniper JN0-664 Certification, candidates must demonstrate a thorough understanding of these topics and be able to apply their knowledge to real-world scenarios. Service Provider, Professional (JNCIP-SP) certification is ideal for network engineers who want to advance their careers in service provider networking and demonstrate their proficiency in Juniper Networks technologies. Service Provider, Professional (JNCIP-SP) certification is also valuable for organizations that employ Juniper Networks technologies and want to ensure that their network engineers have the necessary skills and knowledge to manage and operate their networks effectively.

Juniper Service Provider, Professional (JNCIP-SP) Sample Questions (Q73-Q78):

NEW QUESTION # 73
Exhibit

A network is using IS-IS for routing.
In this scenario, why are there two TLVs shown in the exhibit?

  • A. Wide metrics have specifically been requested
  • B. Both IPv4 and IPv6 are being used in the topology
  • C. The interface specified a metric of 100 for L2.
  • D. There are both narrow and wide metric devices in the topology

Answer: D

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 # 74
Exhibit

You want to implement the BGP Generalized TTL Security Mechanism (GTSM) on the network Which three statements are correct in this scenario? (Choose three)

  • A. You can implement BGP GTSM between R2 and R1.
  • B. You can implement BGP GTSM between R2, R3, and R4
  • C. BGP GTSM requires a firewall filter to discard packets with incorrect TTL.
  • D. BGP GTSM requires a TTL of 255 to be configured between neighbors.
  • E. BGP GTSM requires a TTL of 1 to be configured between neighbors.

Answer: A,C,D

Explanation:
https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/ref/statement/multihop-edit-protocols-bg


NEW QUESTION # 75
Exhibit

Referring to the exhibit, what do the brackets [ ] in the AS path identify?

  • A. They identify the local AS number associated with the AS path if configured on the router, or if AS path prepending is configured
  • B. They identify that the autonomous system number is incomplete and awaiting more information from the BGP protocol.
  • C. They identify an AS set, which are groups of AS numbers in which the order does not matter
  • D. They identify that a BGP confederation is being used to ensure that there are no routing loops.

Answer: A

Explanation:
https://www.juniper.net/documentation/us/en/software/junos/cli-reference/topics/ref/command/show-route- advertising-protocol.html


NEW QUESTION # 76
Which three mechanisms are used by Junos platforms to evaluate incoming traffic for CoS purposes? (Choose three )

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

Answer: C,D,E

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 # 77
Exhibit

You want to implement the BGP Generalized TTL Security Mechanism (GTSM) on the network Which three statements are correct in this scenario? (Choose three)

  • A. BGP GTSM requires a TTL of 1 to be configured between neighbors.
  • B. BGP GTSM requires a firewall filter to discard packets with incorrect TTL.
  • C. You can implement BGP GTSM between R2, R3, and R4
  • D. You can implement BGP GTSM between R2 and R1.
  • E. BGP GTSM requires a TTL of 255 to be configured between neighbors.

Answer: A,C,E

Explanation:
Explanation
BGP GTSM is a technique that protects a BGP session by comparing the TTL value in the IP header of incoming BGP packets against a valid TTL range. If the TTL value is within the valid TTL range, the packet is accepted. If not, the packet is discarded. The valid TTL range is from 255 - the configured hop count + 1 to
255. When GTSM is configured, the BGP packets sent by the device have a TTL of 255. GTSM provides best protection for directly connected EBGP sessions, but not for multihop EBGP or IBGP sessions because the TTL of packets might be modified by intermediate devices.
In the exhibit, we can see that R2, R3, and R4 are in the same AS (AS 20) and R1 is in a different AS (AS 10).
Based on this information, we can infer the following statements:
* You can implement BGP GTSM between R2, R3, and R4. This is not correct because R2, R3, and R4 are IBGP peers and GTSM does not provide effective protection for IBGP sessions. The TTL of packets between IBGP peers might be changed by intermediate devices or routing protocols.
* BGP GTSM requires a firewall filter to discard packets with incorrect TTL. This is not correct because BGP GTSM does not require a firewall filter to discard packets with incorrect TTL. BGP GTSM uses TCP option 19 to negotiate GTSM capability between peers and uses TCP option 20 to carry the expected TTL value in each packet. The receiver checks the expected TTL value against the actual TTL value and discards packets with incorrect TTL values.
* You can implement BGP GTSM between R2 and R1. This is correct because R2 and R1 are EBGP peers and GTSM provides effective protection for directly connected EBGP sessions. The TTL of packets between directly connected EBGP peers is not changed by intermediate devices or routing protocols.
* BGP GTSM requires a TTL of 1 to be configured between neighbors. This is not correct because BGP GTSM requires a TTL of 255 to be configured between neighbors. The sender sets the TTL of packets to 255 and the receiver expects the TTL of packets to be 255 minus the configured hop count.
* BGP GTSM requires a TTL of 255 to be configured between neighbors. This is correct because BGP GTSM requires a TTL of 255 to be configured between neighbors. The sender sets the TTL of packets to 255 and the receiver expects the TTL of packets to be 255 minus the configured hop count.


NEW QUESTION # 78
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