Re: Some questiions on Cisco Packet Tracer
Since you asked, i've used PT few years back with Ubuntu 14 LTS (32bit). Nowadays have access to real hardware for testing scenarios and demos.
PT is good for beginners in networking, easy to learn the concepts on how to network. PT have basic commands that are available on most cisco routers and is light-weight, i was able to run older version of PT on a system with 2GB RAM.
For diagrams i use Dia, however most people use MS Visio to prepare diagrams.
For Advanced configuration scenarios, use GNS3 (require cisco, juniper, fortigate, linux, etc... images).
For certs, nothing beats years of hands on experience.
hope this helps,
Ubuntu 14.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS.
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