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Everyone studies differently, which is why Actual4dump offers the JN0-690 exam preparation material in three formats: a printable PDF, a desktop test engine, and an online test engine. Whichever you pick, you work through the same 70 practice questions covering the Juniper Junos Troubleshooting syllabus.
Juniper JN0-690 Exam Overview:
| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Junos Troubleshooting Specialist Exam (JN0-690) |
| Exam Number: | JN0-690 |
| Related Certifications: | Juniper Networks Certified Associate - Junos (JNCIA-Junos) Juniper Networks Certified Specialist - Enterprise Routing and Switching |
| Exam Format: | Scenario-based questions, Multiple choice |
| Available Languages: | English |
| Recommended Training: | Juniper Training Courses (Official) |
| Exam Registration: | Pearson VUE Juniper Exams Juniper Certification Portal |
| Sample Questions: | DOWNLOAD DEMO |
| 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 |
|---|---|
| Interface and Layer 2 Troubleshooting | - VLAN and switching issues - Interface status and error diagnosis |
| Services and Protocol Troubleshooting | - VPN and tunnel troubleshooting - NAT and firewall filter behavior |
| Routing Policy and Filter Issues | - Filter evaluation and debugging - Policy application and route selection |
| Layer 3 Routing Troubleshooting | - OSPF troubleshooting - Static routing and route lookup issues - BGP troubleshooting |
| System Monitoring and Diagnostics | - Logs, traces, and system alarms - Performance and connectivity analysis tools |
| Junos OS Fundamentals and Architecture | - Junos OS process architecture and components - System operation and maintenance basics |
Juniper Junos Troubleshooting: Common Questions From Candidates
The Juniper Junos Troubleshooting exam (code: JN0-690) is the official Juniper exam that leads to the Juniper Networks Certified Specialist (Junos Troubleshooting) certification. It sits at the Professional level of the Juniper certification track. It is also connected with related credentials such as Juniper Networks Certified Associate - Junos (JNCIA-Junos), Juniper Networks Certified Specialist - Enterprise Routing and Switching. Passing it proves to employers that your skills have been validated by Juniper itself, which is why the JN0-690 credential keeps showing up in job postings.
According to Juniper, the following applies: Recommended prior experience with Junos OS and routing fundamentals; Juniper associate-level knowledge (e.g., JNCIA-Junos) is typically expected.. Certification policies do change from time to time, so confirm the latest requirements on the official exam page at https://www.juniper.net/us/en/training/certification.html before you register.
You can book your Juniper Junos Troubleshooting exam through the official channels below:
Depending on availability in your region, the exam is delivered as Online proctored or test center delivery (Pearson VUE).
Juniper lists the following training options for Juniper Junos Troubleshooting candidates:
Official courses build a solid foundation, and pairing them with the 70 practice questions from Actual4dump shows you how ready you really are before you spend money on the exam itself.
Yes. Actual4dump offers a free JN0-690 PDF demo so you can review the question style, difficulty, and explanations before committing to anything. After purchase, your Juniper Junos Troubleshooting material includes 365 days of free updates, and if your product expires after that, you can extend the update service at a 50% discount from your member zone.
If you take the corresponding JN0-690 exam within 60 days of your purchase and do not pass, you can apply for a full refund under our 100% Money Back Guarantee, subject to a few conditions: the failed exam must be the one matching your purchase; sitting the exam within 3 days of purchase does not qualify, since that leaves too little preparation time; downloading the material without actually taking the exam does not qualify; free materials and expired orders are excluded; and the candidate name must match the payer name. To apply, send a scanned copy of your enrollment slip together with your official Score Report (PDF) within 2 days after the exam, and claims are processed within 7 days. If you would rather not take a refund, you can exchange your purchase for two free products of equal value while keeping the update service on the product you originally bought. As for delivery, everything is an instant download: your products are sent to your email within one minute of payment — contact customer service if nothing arrives within 2 hours — and there is no limit on the number of computers you can install the software on.
The official Juniper Junos Troubleshooting syllabus is organized into 6 main domains. The first three are Routing Policy and Filter Issues, Interface and Layer 2 Troubleshooting, and System Monitoring and Diagnostics. For the full domain-by-domain breakdown, see the complete Exam Topics outline above.
Juniper Junos Troubleshooting Sample Questions:
A technician has reported an alarm on your device running the Junos OS. You suspect it is due to the temperature in the rack. Which two commands will confirm your suspicion? (Choose two.)
- A. show chassis hardware
- B. show chassis alarms
- C. show chassis environment
- D. show chassis firmware
Correct Answer: B,C 🗳️
A client has reported that they cannot establish an FTP connection to your Junos device.
Which command would you use to diagnose the problem?
- A. show interfaces extensive
- B. monitor traffic interface
- C. show interfaces terse
- D. monitor interface traffic
Correct Answer: B 🗳️
Which operational CLI command would you use to display information about the system and software processes?
- A. show system
- B. show route
- C. show cli
- D. show chassis
Correct Answer: A 🗳️
Explanation: Only visible for Actual4dump members. You can sign-up / login (it's free).
Two neighboring routers running OSPF were configured with the same router ID by mistake.
Which OSPF operational mode command would report the number of hello packets received with the local router's router ID?
- A. show ospf log
- B. show ospf io-statistics
- C. show ospf statistics
- D. show ospf route
Correct Answer: C 🗳️
Which two actions are required when performing a unified in-service software upgrade (ISSU)? (Choose two.)
- A. You must disable graceful Routing Engine switchover (GRES) if the Layer 2 Control Protocol is in use.
- B. You must disable nonstop bridging (NSB) if the Layer 2 Control Protocol is in use.
- C. You must enable graceful Routing Engine switchover (GRES).
- D. You must enable nonstop active routing (NSR).
Correct Answer: C,D 🗳️
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