My Dear, I would like to suggest 3 types of exam preparation sources that will be helpful for you.You should try cisco official guide from this link:https://www.ciscopress.com/store/ccna-200-301-official-cert-guide-volume-1-9780135792735The send one ...

I would like to share 3 types of recommended preparation sources here. I have no idea about the reaction of admin against my post? But I would like to clear one thing that my attention is not to promote any kind of products or services, I just came h...