Juniper JN0-691 : Junos Troubleshooting

Pass JN0-691 Exam Cram

Exam Code: JN0-691

Exam Name: Junos Troubleshooting

Updated: Sep 23, 2026

Q & A: 135 Questions and Answers

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Juniper JN0-691 Exam Overview:
Certification Vendor:Juniper Networks
Exam Name:Junos Troubleshooting Certification Exam (JN0-691)
Exam Number:JN0-691
Certificate Validity Period:3 years
Exam Duration:120 minutes
Available Languages:English
Exam Format:Multiple-choice questions, Scenario-based troubleshooting questions
Related Certifications:JNCIA-Junos
JNCIP-ENT
JNCIS-ENT
Recommended Training:Juniper Networks Training Courses
Exam Registration:Pearson VUE Juniper Exams
Juniper Certification Portal
Sample Questions:Free Download Pass JN0-691 Exam Cram
Exam Way:Delivered via Pearson VUE (online proctored or test center)
Pre Condition:Recommended: JNCIA-Junos and JNCIS-ENT certification level knowledge
Official Syllabus URL:https://www.juniper.net/us/en/training/certification.html
Juniper JN0-691 Exam Syllabus Topics:
SectionObjectives
Layer 3 Routing Troubleshooting- BGP troubleshooting
  • 1. Policy and attribute misconfiguration
    • 2. Peer establishment issues
      - Interior Gateway Protocols (OSPF, IS-IS)
      • 1. Route advertisement and convergence issues
        • 2. Adjacency formation failures
          Service and Protocol Troubleshooting- Network services issues
          • 1. NAT and service-related failures
            • 2. Multicast forwarding issues
              Routing Policy and Firewall Filters- Firewall filter troubleshooting
              • 1. Packet drop analysis
                • 2. Filter term misconfiguration
                  - Policy troubleshooting
                  • 1. Policy statement evaluation order
                    • 2. Route filtering and redistribution issues
                      Network Troubleshooting Fundamentals- Methodology and troubleshooting workflow
                      • 1. Identify, isolate, and resolve network issues
                        • 2. Use of operational commands in Junos OS
                          Layer 2 Switching Troubleshooting- VLAN and bridging issues
                          • 1. VLAN tagging and trunk misconfiguration
                            • 2. Spanning Tree Protocol (STP) issues

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                              The JN0-691 exam is the official assessment for the Juniper Junos Troubleshooting certification from Juniper. Across the wide landscape of IT certifications, this credential verifies that you can apply its published objectives in realistic scenarios — and since most candidates aim to succeed in one focused attempt, the quality of your practice material is the variable that matters most.

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                              Recommended: JNCIA-Junos and JNCIS-ENT certification level knowledge

                              Juniper offers these training resources for candidates:

                              Pair official training with a practice bank compiled by an expert team, and your preparation covers both understanding and application.

                              The official outline organizes the JN0-691 exam into weighted domains, including:

                              • Network Troubleshooting Fundamentals ()
                              • Service and Protocol Troubleshooting ()
                              • Layer 3 Routing Troubleshooting ()

                              The Juniper Junos Troubleshooting practice questions at Pass4cram are built around these same objectives — request the free demo by email to see how the content maps onto them.

                              Juniper Junos Troubleshooting Sample Questions:
                              Question #1

                              Which two actions should you perform prior to troubleshooting a problem? (Choose two.)

                              • A. Upgrade the software or firmware.
                              • B. Reboot the system.
                              • C. Determine what is normal in the network.
                              • D. Use change-control processes.
                              Reveal Solution  Discussion  0

                              Correct Answer: C,D  🗳️

                              Question #2

                              You must verify end-to-end connectivity within your network.
                              Which two troubleshooting tools meet this objective? (Choose two.)

                              • A. ping
                              • B. traceroute
                              • C. RMON
                              • D. SNMP
                              Reveal Solution  Discussion  0

                              Correct Answer: A,B  🗳️

                              Question #3

                              Which two statements are correct about the show ospf route and the show route protocols ospf commands? (Choose two.)

                              • A. show ospf route displays the entries in the Open Shortest Path First (OSPF) routing table.
                              • B. show ospf route displays the route entries in the routing table that were learned through OSPF.
                              • C. show route protocols ospf displays the route entries in the routing table that were learned through OSPF.
                              • D. show route protocols ospf displays the entries in the Open Shortest Path First (OSPF) routing table.
                              Reveal Solution  Discussion  0

                              Correct Answer: A,C  🗳️

                              Question #4

                              Click the Exhibit button.
                              -- Exhibit -user@router> show chassis environment
                              Class Item Status Measurement Power Power Supply A OK Power Supply B Absent Temp FPC 0 OK 28 degrees C / 82 degrees F FPC 1 OK 27 degrees C / 80 degrees F Power Supply A OK 22 degrees C / 71 degrees F Power Supply B Absent SSB 0 OK 30 degrees C / 86 degrees F Backplane OK 22 degrees C / 71 degrees F Routing Engine 0 OK 26 degrees C / 78 degrees F Routing Engine 1 Testing Fans Rear Fan OK Spinning at normal speed Front Upper Fan OK Spinning at normal speed Front Middle Fan OK Spinning at normal speed Front Bottom Fan OK Spinning at normal speed Misc Craft Interface OK -- Exhibit -
                              Referring to the exhibit, which two statements are true about the chassis? (Choose two.)

                              • A. Routing Engine 1 is installed in the system but is still initializing.
                              • B. Routing Engine 1 has failed.
                              • C. Power Supply B is not installed in the system.
                              • D. Power Supply B is installed in the system but has failed.
                              Reveal Solution  Discussion  0

                              Correct Answer: A,C  🗳️

                              Question #5

                              In the Junos OS, which type of file dumps the program's environment in the form of memory pointers, instructions, and register data to a file in the event of a panic or other serious malfunction?

                              • A. log file
                              • B. configuration file
                              • C. core file
                              • D. backup file
                              Reveal Solution  Discussion  0

                              Correct Answer: D  🗳️

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