CertExams.com router simulator is a software with extensive features such as lab exercises and Cisco router console simulation. It offers 80+ supported commands, Network Designer, comprehensive help file and flash cards to ease CCNA preparation.

First and foremost, the simulator boasts several lab exercises which are particularly useful for anyone preparing for Cisco CCNA Intro, ICND, and CCNA certifications. With over 40 lab exercises available, it's easy to get some thorough hands-on preparation.
One feature I particularly enjoyed was the Cisco router console simulation. It provides a simulated environment to run the Cisco router IOS and currently supports over 80 Cisco IOS router commands. This is perfect for anyone who doesn't have access to Cisco routers for learning purposes, allowing them to gain some valuable hands-on experience.
Another great feature is the network designer which allows you to design virtual networks using an easy to use drag and drop interface. Currently, router, switch, and PC are supported, as well as Ethernet, serial, and ISDN connectors.
I found the comprehensive help file to be a valuable resource in navigating the simulator. It covers important areas such as supported commands, how to navigate through the lab exercises and router console simulator, and also includes a disclaimer.
Flash cards are also available during several lab exercises, providing topic help and useful information to properly answer the labs.
The simulator itself is robust, allowing you to configure router networks with over 80 supported commands. After configuration, you can even ping the other routers for proper configuration verification.
It's important to note that the download includes a demo simulator and a full version that requires purchasing a key to unlock the software. The demo has some limitations, including limited labs and limited support for router commands.
Overall, I found CertExams.com's CCNA network simulator with designer to be a great tool for anyone preparing for Cisco CCNA certifications or looking to gain experience in network design and configuration.
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