Juniper Service Provider Routing and Switching : JN0-661 valid dumps

JN0-661 real exams

Exam Code: JN0-661

Exam Name: Service Provider Routing and Switching

Updated: Sep 03, 2026

Q & A: 135 Questions and Answers

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The Juniper name on a certification still changes how recruiters read a resume. Earning it means passing the Juniper Service Provider Routing and Switching exam, and the 135 practice questions at Actual4Exams are the most direct route between where you are and that passing score.

Juniper JN0-661 Exam Overview:

Certification Vendor:Juniper Networks
Exam Name:Service Provider Routing and Switching
Exam Number:JN0-661
Exam Price:USD 200–300 (varies by country / currency, approximate Juniper exam fee)
Available Languages:English
Passing Score:Pass/Fail (Juniper does not publicly publish a numeric score)
Exam Duration:90 minutes
Related Certifications:JNCIE-SP (Service Provider Routing and Switching - Expert)
JNCIP-SP (Service Provider Routing and Switching - Professional)
JNCIS-SP (Service Provider Routing and Switching - Specialist)
Real Exam Qty:65
Exam Format:Multiple Choice
Certificate Validity Period:3 years (Juniper certification validity policy)
Sample Questions:Free Download JN0-661 valid dump
Exam Way:Delivered at Pearson VUE testing centres or via authorised online proctoring
Pre Condition:Recommended prerequisite: JNCIS-SP specialist level or equivalent experience with Junos and service provider routing/switching networking
Official Syllabus URL:https://www.juniper.net/us/en/training/certification/tracks/service-provider-routing-switching/jncip-sp.html

Juniper JN0-661 Exam Syllabus Topics:

SectionObjectives
Layer 2 VPNs and Switching- Provider bridging
- Layer 2 circuits
Layer 3 VPNs- Route distinguishers and route targets
- L3VPN architecture
Multiprotocol Label Switching (MPLS)- MPLS fundamentals
- Label distribution
High Availability and Scaling- Link aggregation and multichassis LAGs
- Redundancy and failover
Routing Protocols- IS-IS
- BGP
- OSPF
IPv6 and Tunnels- IPv6 routing
- Tunneling mechanisms

The Juniper JN0-661 Exam, Question by Question

Juniper Service Provider Routing and Switching is an official exam run by Juniper Networks under exam code JN0-661. Passing it awards the JNCIP-SP certification, which sits at the Professional tier. It also counts toward related credentials such as JNCIS-SP (Service Provider Routing and Switching - Specialist), JNCIP-SP (Service Provider Routing and Switching - Professional), JNCIE-SP (Service Provider Routing and Switching - Expert). Certified professionals remain in shorter supply than the market wants, which is precisely why this exam keeps showing up in conversations about better roles and better pay.

The Juniper Service Provider Routing and Switching exam gives you 90 minutes to work through 65 questions. That is a tight ratio, and it punishes candidates who get emotionally attached to any single item. The fix is mechanical: answer what you know, flag what you do not, and keep moving. A few full-length timed runs in the Actual4Exams test engine, with its randomized question order, will calibrate your pace far better than untimed reading ever could.

The official fee for Juniper Service Provider Routing and Switching is USD 200–300 (varies by country / currency, approximate Juniper exam fee), and Pass/Fail (Juniper does not publicly publish a numeric score) is what passing takes. The uncomfortable part: retakes cost the full USD 200–300 (varies by country / currency, approximate Juniper exam fee) again, which makes preparation the cheapest line item in this whole project. Before booking, put yourself through repeated scored sessions with the Actual4Exams practice tests and compare results over time; a stable margin above the passing line, not a single lucky run, is when you are ready.

Recommended prerequisite: JNCIS-SP specialist level or equivalent experience with Junos and service provider routing/switching networking

Vendor rules do get revised, so treat this as your starting point and confirm the current eligibility details before booking via the official exam page.

It is. Actual4Exams publishes a free PDF demo of the Juniper Service Provider Routing and Switching material, so the product can prove itself before you pay. Your purchase then comes with 365 days of free updates, and once that period ends, extending the update service costs 50% of the regular price. The test engine software itself is verified malware-free and safe to install.

Actual4Exams stands behind the product with a 100% money-back guarantee under defined conditions. If you take the Juniper Service Provider Routing and Switching exam within 60 days of purchase and fail, you qualify for a full refund, provided the exam corresponds to your product. Sitting the exam within 3 days of purchase does not qualify, and neither do unused downloads, free materials, or expired orders; the candidate name must match the payer name. Submit a scanned enrollment slip and the official Score Report PDF within 2 days of the exam, and claims are resolved within 7 days. You may also choose an exchange instead of a refund: two other exam products of equal value, free, with the update service on your original purchase retained.

Delivery takes about a minute. Files unlock for instant download at payment and are emailed to you automatically; if 2 hours pass with nothing received, check spam and contact customer service. There is no installation limit, so the test engine can live on every device you own, phone included.

Juniper Service Provider Routing and Switching breaks down into 6 official domains, led by Layer 3 VPNs, Multiprotocol Label Switching (MPLS), and IPv6 and Tunnels. You will find the full topic-by-topic outline above on this page; use the weightings to budget your study hours where they pay back the most.

Juniper Service Provider Routing and Switching Sample Questions:

Question #1

Click the Exhibit button.
user@R1# show interfaces lo0
unit 0 {
family inet {
address 10.220.1.1/32;
}
family iso {
address 49.0001.0010.0220.0101.00;
}
}
{edit protocols isis}
user@R1# show
interface ge-1/0/1.0 {
level 2 disable;
}
interface ge-1/1/0.0 {
level 1 disable;
}
interface ge-1/1/1.0 {
level 2 disable;
}
interface lo0.0;
user@R7# show interfaces lo0
unit 0 {
family inet {
address 10.220.1.7/32;
}
family iso {
address 49.0002.0010.0220.0107.00;
}
}
{edit protocols isis]
user@R7 show
interface ge-1/0/1.0 {
level 2 disable;
}
interface lo0.0
You are trying to establish an IS-IS Level 1 adjacency over ge-1/0/1 between R1 and R7 without impacting the other IS-IS adjacencies on R1.
Which configuration change would satisfy this requirement?

  • A. Change the area on R7 to match R1.
  • B. Disable Level 2 globally on R7.
  • C. Disable Level 2 globally on R1.
  • D. Change the area on R1 to match R7.
Answer: A

Explanation: Only visible for Actual4Exams members. You can sign-up / login (it's free).

Question #2

Click the Exhibit button.

Referring to the exhibit, you have a network that uses PIM-SM and you need to block certain PIM register messages.
Which two statements are correct in this situation? (Choose two.)

  • A. You should apply a policy that blocks PIM register messages from the source on R1.
  • B. You should apply a policy that blocks PIM register messages from the source on R2.
  • C. You should apply a policy that blocks PIM register messages from the source on R3.
  • D. You should apply a policy that blocks PIM register messages from the source on R4.
Answer: A,D

Explanation: Only visible for Actual4Exams members. You can sign-up / login (it's free).

Question #3

You have a Layer 3 VPN established between Site 1 and Site 2. You are asked to limit the number of OSPF routes that the PE devices will accept from the CEs.
Which statement is correct?

  • A. You should use the prefix-limit feature to limit the number of accepted routes.
  • B. You should use the route-target filtering feature to limit the accepted routes.
  • C. You should use the maximum-prefixes feature to limit the number of accepted routes.
  • D. You should use the allow feature to limit the accepted routes.
Answer: C
Question #4

Click the Exhibit button.

Referring to the exhibit, you control AS 24652. You are asked to ensure that traffic destined to the 23.56.83.0/24 network from ISP 4 takes the most optimum path through ISP 3. ISP 1 should be used as a backup for this traffic flow.
Which two actions would accomplish this task? (Choose two.)

  • A. Set a lower local preference for the route advertised by ISP 3.
  • B. Set a higher local preference for the route advertised by ISP 3.
  • C. Advertise a longer AS path from R1 to ISP4.
  • D. Advertise a longer AS path from R2 to ISP 4.
Answer: B,C

Explanation: Only visible for Actual4Exams members. You can sign-up / login (it's free).

Question #5

Which two statements regarding OSPFv2 or OSPFv3 authentication are correct? (Choose two.)

  • A. OSPFv2 supports MD5 authentication.
  • B. OSPFv3 relies on the native security stack that uses IPsec.
  • C. OSPFv2 supports MD5 or SHA authentication.
  • D. OSPFv2 relies on the native security stack that uses IPsec.
Answer: B
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This means that if due to any reason you are not able to pass the JN0-661 actual exam even after using our product, we will reimburse the full amount you spent on our products. you just need to mail us your score report along with your account information to address listed below within 7 days after your unqualified certificate came out.

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