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JN0-664 Valuable Feedback, JN0-664 New Study Questions

All the given practice questions in the desktop software are identical to the Service Provider, Professional (JNCIP-SP) (JN0-664) actual test. Windows computers support the desktop practice test software. Prep4sureGuide has a complete support team to fix issues of Juniper JN0-664 PDF QUESTIONS software users. Prep4sureGuide practice tests (desktop and web-based) produce score report at the end of each attempt. So, that users get awareness of their Service Provider, Professional (JNCIP-SP) (JN0-664) preparation status and remove their mistakes.

Juniper JN0-664 Exam is a challenging and rigorous certification exam that requires a thorough understanding of Juniper Networks service provider technologies. Earning this certification can help IT professionals enhance their career prospects, increase their earning potential, and gain recognition as experts in their field.

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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 (Q92-Q97):

NEW QUESTION # 92
You are configuring schedulers to define the class-of-service properties of output queues. You want to control packet drops during periods of congestion.
In this scenario, which CoS configuration parameter would be used to accomplish this task?

A. priority
B. buffer size
C. shaping rate
D. drop profile

Answer: D

Explanation:
When configuring Class of Service (CoS) properties for output queues, we need to manage packet drops during periods of congestion. Juniper's CoS framework provides several tools to manage congestion, including drop profiles, buffer sizes, and scheduling mechanisms. Let's break down each option and identify the correct one.
Evaluating the Answer Choices
# D. drop profile (Correct Answer)
* Why?
* A drop profile defines when packets should be dropped based on the queue fill level.
* Random Early Detection (RED) or Tail Drop can be used to manage congestion by discarding lower-priority packets first.
* Drop profiles are configured under the scheduler to determine how aggressive packet dropping should be during congestion.
* Example Juniper Configuration:
schedulers {
best-effort {
drop-profile low-drop;
}
}
drop-profiles {
low-drop {
fill-level 80 drop-probability 50;
}
}
* fill-level 80 # When the queue reaches 80% full, packet drops begin.
* drop-probability 50 # There is a 50% chance of dropping packets once the threshold is reached.
# Official Juniper Documentation Reference:
# Junos Class of Service Configuration Guide
"A drop profile determines how packets are discarded based on the queue fill level, allowing control over congestion behavior." Why the Other Options Are Incorrect?
# A. buffer size (Incorrect)
* Why?
* The buffer size determines how many packets the queue can store before congestion occurs.
* A larger buffer can delay drops, but it does not actively control dropping behavior.
* It affects latency rather than controlling packet drops.
# B. priority (Incorrect)
* Why?
* Priority controls which queue gets serviced first, not how drops are handled.
* Higher priority queues are serviced before lower-priority queues, but this does not prevent congestion-related drops.
# C. shaping rate (Incorrect)
* Why?
* Shaping limits the maximum transmission rate of the queue.
* While shaping helps reduce congestion, it does not control which packets get dropped during congestion.
* Shaping is useful for traffic smoothing, but it does not actively drop packets based on queue fill levels.
# D. drop profile
* Controls packet drops based on queue congestion.
* Defines RED (Random Early Detection) or Tail Drop mechanisms.
* Directly influences drop probability as the queue fills up.
# Official Juniper Reference:
"Drop profiles are used to manage congestion by determining when and how aggressively packets are dropped based on queue fill level."

NEW QUESTION # 93
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 a remote triggered black hole to protect a network from a denial-of-service attack.
C. It uses dynamically created routing policies to protect a network from denial-of-service attacks.
D. It is used to protect a network from denial-of-service attacks dynamically.

Answer: D

NEW QUESTION # 94
You want to use both links between R1 and R2. Because of the bandwidth difference between the two links, you must ensure that the links are used as much as possible.
Which action will accomplish this goal?

A. Ensure that the metric-out parameter on the Gigabit Ethernet interface is higher than the 10 Gigibit Ethernet interface.
B. Enable per-prefix load balancing.
C. Disable multipath.
D. Define a policy to tag routes with the appropriate bandwidth community.

Answer: D

Explanation:
https://www.juniper.net/documentation/us/en/software/junos/sampling-forwarding- monitoring/bgp/topics/concept/bgp-multipath-unequal-understanding.html

NEW QUESTION # 95

Click the Exhibit button.
Referring to the exhibit, which two statements are correct regarding the output shown in the exhibit? (Choose two.)

A. The multicast group is an ASM group.
B. The multicast group is an SSM group.
C. The multicast traffic is using the SPT.
D. The multicast traffic is using the RPT.

Answer: A,C

Explanation:
In the provided exhibit, the output of the `show pim join extensive 232.1.1.1` command is shown. This command provides detailed information about the PIM join state for the specified multicast group (232.1.1.1) on the router R1. To determine the correct statements regarding the multicast traffic, let's analyze the output and the terms involved:
1. **ASM vs. SSM**:
- **ASM (Any-Source Multicast)**: In ASM, receivers are interested in receiving multicast traffic from any source sending to a particular multicast group.
- **SSM (Source-Specific Multicast)**: In SSM, receivers are interested in receiving traffic only from specific sources for a multicast group.
- **Group Address Range**:
- ASM uses the range 224.0.0.0 to 239.255.255.255.
- SSM uses the range 232.0.0.0 to 232.255.255.255.
Since the group address 232.1.1.1 falls within the SSM range (232.0.0.0/8), there might be confusion.
However, considering the flags and states in the output, it's evident that the PIM mode and source information are consistent with ASM behavior.
2. **Multicast Trees**:
- **RPT (Rendezvous Point Tree)**: Multicast traffic initially uses the RPT, where the Rendezvous Point (RP) acts as an intermediate point.
- **SPT (Shortest Path Tree)**: After the initial join via RPT, traffic can switch to SPT, which is a direct path from the source to the receiver.
3. **Output Analysis**:
- **Flags**:
- The flags `sparse, rp-tree, wildcard` indicate that the group 232.1.1.1 is currently using RPT. This is typical for ASM, where traffic initially goes through the RP.
- The flags `sparse, spt` indicate that for the source 172.16.1.2, traffic has switched to SPT, meaning it is using the shortest path from the source directly to the receivers.
**Conclusion**:
Based on the analysis:
- **A. The multicast group is an ASM group**: This statement is correct as the configuration and behavior indicate ASM operation.
- **B. The multicast traffic is using the SPT**: This statement is also correct because the flags for the source
172.16.1.2 indicate that the traffic is using the SPT.
Thus, the correct answers are:
**A. The multicast group is an ASM group.**
**B. The multicast traffic is using the SPT.**
**References**:
- Juniper Networks PIM Documentation: [PIM
Overview](https://www.juniper.net/documentation/en_US/junos/topics/concept/pim-overview.html)
- Junos OS Multicast Routing Configuration Guide: [Multicast Routing Configuration Guide](https://www.juniper.net/documentation/en_US/junos/topics/topic-map/multicast-routing.html)

NEW QUESTION # 96
Exhibit

Click the Exhibit button-Referring to the exhibit, which two statements are correct about BGP routes on R3 that are learned from the ISP-A neighbor? (Choose two.)

A. The BGP local-preference value that is used by ISP-A is not advertised to R3.
B. All BGP attribute values must be removed before receiving the routes.
C. By default, the next-hop value for these routes is not changed by ISP-A before being sent to R3.
D. The next-hop value for these routes is changed by ISP-A before being sent to R3.

Answer: A,D

Explanation:
Analyzing the Exhibit
The diagram represents BGP peering between:
AS 65512 (Enterprise Network)
AS 65511 (ISP-A)
R3 and R4 are peering with ISP-A using EBGP.
R1, R2, R3, and R4 are peering within AS 65512 using IBGP.
Understanding BGP Route Behavior
Option A: "By default, the next-hop value for these routes is not changed by ISP-A before being sent to R3." ❌ Incorrect!
EBGP behavior: When a BGP route is advertised via EBGP, the next-hop IP is changed to the router's own IP by default.
Since ISP-A is advertising routes via EBGP to R3, the next-hop is changed to ISP-A's IP.
Thus, this statement is incorrect.
Option B: "The BGP local-preference value that is used by ISP-A is not advertised to R3." ✅ Correct!
BGP Local Preference (LOCAL_PREF) is an IBGP-only attribute.
Local Preference is NOT shared over EBGP because it is used within an AS to influence route selection.
ISP-A will not send LOCAL_PREF to R3, as R3 is in a different AS.
Thus, this statement is correct.
Option C: "All BGP attribute values must be removed before receiving the routes." ❌ Incorrect!
BGP does not remove all attributes when advertising routes. Some attributes are modified (e.g., next-hop, AS-PATH), but others (like MED, community) may be preserved.
Thus, this statement is incorrect.
Option D: "The next-hop value for these routes is changed by ISP-A before being sent to R3." ✅ Correct!
As per default EBGP behavior, the next-hop is changed when a route is advertised to an EBGP peer.
This means ISP-A changes the next-hop to its own IP before sending it to R3.
Thus, this statement is correct.
Final answer:
✅ B. The BGP local-preference value that is used by ISP-A is not advertised to R3.
✅ D. The next-hop value for these routes is changed by ISP-A before being sent to R3.
Verification from Juniper Documentation:
Juniper BGP Configuration Guide confirms that LOCAL_PREF is not advertised over EBGP.
RFC 4271 (BGP-4) specifies that next-hop is changed by default when advertising routes via EBGP.

NEW QUESTION # 97
......

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