Cert‑Ex™ Network Simulator w/ Designer for Juniper

 PRODUCT OVERVIEW

The Cert-Ex™ Network Simulator w/ Designer for Juniper is a virtual lab software tool developed for individuals preparing for the JNCIA‑Junos certification. It simulates Juniper® routers and enables users to build, configure, and troubleshoot network topologies in a self-contained software environment, eliminating the need for physical hardware. 

KEY FEATURES

• Router Emulation: Simulates Juniper J-series (J2320, J2350, J4350, J6350) and M-series (M7i, M10i) routers running Junos OS. 

• Network Designer Tool: A drag-and-drop GUI topology builder for designing custom network layouts with connectors like Serial, Ethernet, SONET, Fast Ethernet, Gigabit Ethernet, E1, T1, T3. 

• Extensive Lab Manual & Exercises: Includes detailed help files, step-by-step instructions, and built-in labs for hands-on practice. 

• Short-form Command Support: Allows typing abbreviated commands for quicker interaction, simulating real Junos OS workflows. 

• Platform Compatibility & Delivery: Downloadable software for Windows 7/8/10/11 (both 32-bit and 64-bit). Version 4.6.0, file size ~27.3 MB. 

HOW IT WORKS

Users install the simulator on a compatible Windows machine, launch the software, and either load pre-built labs or design their own network in the designer tool. The virtual routers behave like Juniper hardware users access the Junos OS CLI, execute configuration commands, set up links, test network behavior, and analyze outcomes. The designer module allows visual network creation, while the router emulation runs in the background, giving full CLI experience.

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USE CASES & BENEFITS

• For JNCIA-Junos Candidates: Enables cost-effective, hands-on practice of Junos OS configurations, routing, switching, and Juniper protocols without requiring physical routers.

• For Trainers & Institutions: Can be used to assign lab exercises, track progress, and illustrate network design concepts through virtual topology creation.

• For Self-Learners: Offers flexibility to practice anytime with the convenience of a downloadable tool, building confidence and skill before encountering real-world Juniper devices.

• Cost & Resource Efficiency: Saves the expense and logistical burden of acquiring multiple Juniper routers, cabling, and rack space.

SYSTEM REQUIREMENTS & LICENSING

• Operating System: Windows 7/8/10/11 (32-bit & 64-bit) 

• Delivery: Downloadable installation file (~27.3 MB) 

• Pricing: Standard license price begins at USD 34.00 for the full version (with potential discounts) 

• Noted: The simulator is an independent tool and is not affiliated or authorized by the certification provider or Juniper® itself. 

CONCLUSION

The Cert-Ex™ Network Simulator w/ Designer for Juniper is a focused, practical tool for anyone preparing for the JNCIA-Junos certification or seeking to gain hands-on experience with Juniper networks. With its router emulation, network design capability, detailed labs, and support for Junos OS commands, it provides an accessible alternative to physical labs. Whether you’re a student, instructor, or self-learner, this software supports building real configuration skills and confidence for network deployment and certification success.

Author Bio
This article was prepared by the editorial team at SimulationExams.com, dedicated to providing exam simulation tools, virtual lab environments, and certification training resources for IT professionals and students worldwide.