Prepare to Get Certified The link address is: https://www.cisco.com/c/en/us/training-events/training-certifications/exams/how-to-prepare.html?ccid=ccnacertguide&dtid=email&oid=ccna-cert-guide-thankyouemail&mkt_tok=NTY0LVdIVi0zMjMAAAGCaXRNVB809S7wStth_KvshJiuWDsj7Qmmv2pKSO-JQSMxkwYZarX7kGIba2jcO3e2k-Mp651_6Xt4aZPWXOG9YudauVN1z8ZjiP7hqP2Bp7k