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JN0-664 Latest Exam Guide & JN0-664 Valid Questions Test & JN0-664 Free Download Pdf

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In this cut-throat competitive world of Juniper, the Juniper JN0-664 certification is the most desired one. But what creates an obstacle in the way of the aspirants of the Service Provider, Professional (JNCIP-SP) (JN0-664) certificate is their failure to find up-to-date, unique, and reliable Service Provider, Professional (JNCIP-SP) (JN0-664) practice material to succeed in passing the Juniper JN0-664 certification exam.

Juniper JN0-664 exam is a certification exam that is designed for IT professionals who want to validate their knowledge and skills in the field of service provider networking. JN0-664 exam is intended for individuals who are seeking to become a Juniper Networks Certified Professional in Service Provider Routing and Switching. The JN0-664 exam is the second level of the Juniper Networks Certified Professional (JNCIP-SP) certification program and is an essential step towards becoming a certified expert in service provider routing and switching.

To pass the Juniper JN0-664 Certification Exam, candidates must have a solid understanding of advanced networking concepts, including routing policies, BGP route manipulation, MPLS VPNs, multicast routing, and Class of Service (CoS) implementation. They must also understand the operation and configuration of Juniper Networks networking devices, such as the MX Series 3D Universal Edge Router, EX Series Ethernet Switches, and SRX Series Services Gateways.

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Juniper Service Provider, Professional (JNCIP-SP) Sample Questions (Q54-Q59):

NEW QUESTION # 54
Exhibit

CE-1 must advertise ten subnets to PE-1 using BGP Once CE-1 starts advertising the subnets to PE-1, the BGP peering state changes to Active.
Referring to the CLI output shown in the exhibit, which statement is correct?

A. The prefix limit has been reached on PE-1
B. CE-1 is unreachable
C. CE-1 is advertising its entire routing table.
D. CE-1 is configured with an incorrect peer AS

Answer: A

Explanation:
Analyzing the Exhibit and Understanding the Issue
The exhibit shows BGP configurations on CE-1 and PE-1, which are connected via EBGP.
* CE-1 (Customer Edge)
* Uses AS 64511 and establishes an EBGP session with PE-1 (AS 65550).
* Configured to export 10 static routes (192.168.1.0/24 - 192.168.10.0/24) using the static-to-bgp policy.
* PE-1 (Provider Edge)
* Uses AS 65550 and is peering with CE-1 (AS 64511).
* Configured with a prefix-limit of 5 on received routes from CE-1.
* Teardown enabled, meaning if more than 5 prefixes are received, the BGP session is shut down.
Identifying the Problem
* CE-1 is correctly configured with peer AS 65550, so Option B ("CE-1 is configured with an incorrect peer AS") is incorrect #.
* CE-1 is advertising exactly 10 static routes (as per policy).
* PE-1 has a prefix-limit maximum 5 with teardown enabled.
* This means that when CE-1 advertises more than 5 prefixes, PE-1 shuts down the BGP session.
* BGP moves to the "Active" state, indicating that the session has been disrupted and PE-1 is trying to re-establish the connection.
* CE-1 is reachable since the session was initially established before the limit was exceeded, so Option D ("CE-1 is unreachable") is incorrect #.
* CE-1 is not advertising its entire routing table, only the static prefixes listed in the policy, so Option A ("CE-1 is advertising its entire routing table") is incorrect #.
Correct Answer
# C. The prefix limit has been reached on PE-1
Verification from Juniper Documentation
* Juniper BGP Prefix Limit Documentation confirms that exceeding the prefix limit with teardown causes the BGP session to go into "Active" state.
* Juniper Troubleshooting Guide for BGP Peering Issues states that when a BGP session reaches the prefix limit and has teardown enabled, the session is terminated.

NEW QUESTION # 55
Which statement is true regarding BGP FlowSpec?

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

Answer: A

NEW QUESTION # 56
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 group-range to be more specific on R2 than R3.
B. Change the bootstrap priority on R2 to be higher than R3
C. Change the local address 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: A

NEW QUESTION # 57
Which two statements about IS-IS are correct? (Choose two.)

A. CSNPs are flooded periodically.
B. CSNPs contain only descriptions of LSPs.
C. PSNPs are flooded periodically.
D. PSNPs contain only descriptions of LSPs.

Answer: A,D

NEW QUESTION # 58
Exhibit

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

A. Joins for any group are accepted if the group count value is less than 25.
B. Joins for group 224.7.7.7 are rejected if the source address is 192.168.100.10
C. Joins for group 224.7.7.7 are accepted if the group count is less than 25
D. Joins for group 224.7.7.7 are always rejected, regardless of the group count.

Answer: B

Explanation:
This configuration applies to IGMP (Internet Group Management Protocol) and is designed to control multicast group memberships on the interface ge-0/0/0.0.
Breaking Down the Configuration Policy-Statement: block-igmp
policy-statement block-igmp {
term 1 {
from {
route-filter 224.7.7.7/32 exact;
source-address-filter 192.168.100.10/32 exact;
}
then reject;
}
}
This policy blocks IGMP joins for group 224.7.7.7 only if the source IP is 192.168.100.10.
If both conditions match, the request is rejected.
IGMP Configuration on Interface ge-0/0/0.0
[edit protocols igmp]
user@router# show
interface ge-0/0/0.0 {
group-policy block-igmp;
group-limit 25;
}
group-policy block-igmp applies the policy statement block-igmp, meaning IGMP join requests are evaluated based on this policy.
group-limit 25 means the interface allows up to 25 multicast groups.
Evaluating the Answer Choices
✅ A. Joins for group 224.7.7.7 are rejected if the source address is 192.168.100.10.
Correct, because:
The policy specifically matches group 224.7.7.7 and source IP 192.168.100.10.
If both conditions are met, the join is rejected.
❌ B. Joins for any group are accepted if the group count value is less than 25.
Incorrect, because:
The group-limit (25) applies to the total number of IGMP groups but does not override explicit policy rules.
Even if there are fewer than 25 groups, a join request can still be rejected by the policy statement.
❌ C. Joins for group 224.7.7.7 are always rejected, regardless of the group count.
Incorrect, because:
The policy only blocks joins from the specific source 192.168.100.10.
Joins from other sources to 224.7.7.7 are allowed.
❌ D. Joins for group 224.7.7.7 are accepted if the group count is less than 25.
Incorrect, because:
Joins for 224.7.7.7 from source 192.168.100.10 will always be rejected, even if the group count is below 25.
The group-limit does not override the rejection policy.
"Joins for group 224.7.7.7 are rejected if the source address is 192.168.100.10." Official Juniper Documentation Reference:
Junos IGMP Policy Configuration Guide
"A group-policy statement allows filtering IGMP joins based on multicast group address and source IP."

NEW QUESTION # 59
......

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