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Juniper JN0-690 Exam Overview:
| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Junos Troubleshooting Specialist Exam (JN0-690) |
| Exam Number: | JN0-690 |
| Available Languages: | English |
| Related Certifications: | Juniper Networks Certified Associate - Junos (JNCIA-Junos) Juniper Networks Certified Specialist - Enterprise Routing and Switching |
| Exam Format: | Scenario-based questions, Multiple choice |
| Recommended Training: | Juniper Training Courses (Official) |
| Exam Registration: | Juniper Certification Portal Pearson VUE Juniper Exams |
| Sample Questions: |  |
| Exam Way: | Online proctored or test center delivery (Pearson VUE) |
| Pre Condition: | Recommended prior experience with Junos OS and routing fundamentals; Juniper associate-level knowledge (e.g., JNCIA-Junos) is typically expected. |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification.html |
Juniper JN0-690 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Interface and Layer 2 Troubleshooting | - Interface status and error diagnosis - VLAN and switching issues |
| Topic 2: System Monitoring and Diagnostics | - Logs, traces, and system alarms - Performance and connectivity analysis tools |
| Topic 3: Layer 3 Routing Troubleshooting | - Static routing and route lookup issues - BGP troubleshooting - OSPF troubleshooting |
| Topic 4: Junos OS Fundamentals and Architecture | - System operation and maintenance basics - Junos OS process architecture and components |
| Topic 5: Routing Policy and Filter Issues | - Filter evaluation and debugging - Policy application and route selection |
| Topic 6: Services and Protocol Troubleshooting | - NAT and firewall filter behavior - VPN and tunnel troubleshooting |
JN0-690 Exam FAQ: Informed Choices, Real Preparation
The official Juniper Junos Troubleshooting outline defines 6 domains. The leading three are Services and Protocol Troubleshooting, System Monitoring and Diagnostics, and Routing Policy and Filter Issues. The full list is in the topics section above, and Pass4suresVCE's 70 practice questions cover each one.
Recommended prior experience with Junos OS and routing fundamentals; Juniper associate-level knowledge (e.g., JNCIA-Junos) is typically expected. Since requirements change over time, confirm the latest on the official Juniper exam page before scheduling.
Online proctored or test center delivery (Pearson VUE) Register for the Juniper Junos Troubleshooting exam through these official channels:
After booking, Pass4suresVCE delivers your practice questions within 1 minute — preparation starts the same day.
The JN0-690 exam is a Juniper certification exam validating the Juniper Junos Troubleshooting syllabus shown above. It belongs to these credential paths: Juniper Networks Certified Associate - Junos (JNCIA-Junos), Juniper Networks Certified Specialist - Enterprise Routing and Switching. Candidates in 2026 start with Pass4suresVCE's 70 practice questions, available as a printable PDF, a Windows Desktop Test Engine, and an Online Test Engine — three versions of the same materials.
The official Juniper page publishes the current question count and duration; review it before your test date.
Pass4suresVCE issues a full refund if you take the Juniper Junos Troubleshooting exam within 60 days of purchase and do not pass. The policy does not apply if the exam is taken within 3 days of purchase, if the exam was never actually taken, or to free materials or expired orders, and the candidate name must match the payer name. Submit a scan of your enrollment slip and the official Score Report PDF within 2 days of the exam; claims are processed within 7 days. Alternatively, exchange for two free exam products of equal value and keep your original update service. Orders arrive by email within 1 minute — contact support if nothing arrives within 2 hours.
Scoring and fees are published by Juniper and may change; verify the current figures on the official site.
Juniper recommends these training resources for the Juniper Junos Troubleshooting exam:
Follow the training with steady self-testing — the 70 practice questions from Pass4suresVCE help you apply theory and fill any gaps the training leaves.
Three versions of the same study materials: a printable, expert-prepared PDF with free demo download and instant access; a Desktop Test Engine for Windows with customizable simulation and timed modes that works offline; and an Online Test Engine for any browser on Windows, Mac, Android, and iOS with test history and performance review. All 70 practice questions are identical across versions. Every purchase includes 365 days of free updates, a 50% renewal discount afterward, and unlimited computer installations.
Juniper Junos Troubleshooting Sample Questions:
Which two statements are true about firewall filters and policers? (Choose two.)
- A. If an output firewall filter is configured on the same logical interface as a policer, the firewall filter is executed first.
- B. If an output firewall filter is configured on the same logical interface as a policer, the policer is executed first.
- C. If an input firewall filter is configured on the same logical interface as a policer, the firewall filter is executed first.
- D. If an input firewall filter is configured on the same logical interface as a policer, the policer is executed first.
Correct Answer: A,D 🗳️
You are notified about a router reboot event.
Which command would be helpful in determining the reason for the last reboot?
- A. show chassis craft-interface
- B. show system reboot
- C. show chassis routing-engine
- D. show system snapshot
Correct Answer: C 🗳️
In Junos, which process has its own internal task scheduler?
- A. chassisd
- B. mgd
- C. rpd
- D. ppmd
Correct Answer: C 🗳️
Click the Exhibit button.
-- Exhibit -
May 20 22:27:04.010297 OSPF rcvd Hello 192.168.0.2 -> 224.0.0.5 (ge-1/1/2.0 IFL 343 area 0.0.0.0) May 20 22:27:04.010320 Version 2, length 44, ID 10.10.10.1, area 0.0.0.1 May 20 22:27:04.010342 checksum 0x166d, authtype 0 May 20 22:27:04.010365 mask 255.255.255.252, hello_ivl 10, opts 0x12, prio 128 May 20 22:27:04.010387 dead_ivl 40, DR 192.168.0.2, BDR 0.0.0.0 May 20 22:27:07.891698 OSPF periodic xmit from 192.168.0.1 to 224.0.0.5 (IFL 2684276180 area
0.0.0.0)
May 20 22:27:12.749988 OSPF packet ignored: area mismatch (0.0.0.1) from 192.168.0.2 on intf ge-1/1/2.0 area 0.0.0.0 May 20 22:27:12.750071 OSPF rcvd Hello 192.168.0.2 -> 224.0.0.5 (ge-1/1/2.0 IFL 343 area
0.0.0.0) May 20 22:27:12.750095 Version 2, length 44, ID 10.10.10.1, area 0.0.0.1 May 20 22:27:12.750116 checksum 0x166d, authtype 0 May 20 22:27:12.750139 mask 255.255.255.252, hello_ivl 10, opts 0x12, prio 128 May 20 22:27:12.750161 dead_ivl 40, DR 192.168.0.2, BDR 0.0.0.0 May 20 22:27:14.393182 OSPF rcvd Hello 192.168.0.2 -> 224.0.0.5 (ge-1/1/2.0 IFL 343 area
0.0.0.0) May 20 22:27:14.393262 Version 2, length 44, ID 10.10.10.1, area 0.0.0.0 May 20 22:27:14.393284 checksum 0x0, authtype 0 May 20 22:27:14.393307 mask 255.255.255.252, hello_ivl 50, opts 0x12, prio 128 May 20 22:27:14.393368 dead_ivl 200, DR 0.0.0.0, BDR 0.0.0.0 May 20 22:27:14.393399 OSPF packet ignored: our router ID received from 192.168.0.2 on intf
ge-1/1/2.0 area 0.0.0.0 -- Exhibit -
Referring to the exhibit, which two OSPF adjacency problems are present? (Choose two.)
- A. area number mismatch
- B. area type mismatch
- C. duplicate router ID
- D. hello interval mismatch
Correct Answer: A,C 🗳️
You are asked to provide an audit trail for all user activity on your Junos device.
Which syslog configuration statement accomplishes this task?
- A. user * {
any any;
}
file messages {
any notice;
authorization info;
} - B. user * {
any emergency;
}
file messages {
any notice;
authorization info;
}
file audit-commands {
authorization any;
} - C. user * {
any any;
}
file messages {
any info;
authorization info;
} - D. user * {
any emergency;
}
file messages {
any notice;
authorization info;
}
file interactive-commands {
interactive-commands any;
}
Correct Answer: D 🗳️
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