The following will act as a prerequisite:
The only authorized publisher of books for Cisco certification self-study and network technology learning is Cisco Press. Visit Cisco Press for the latest publications to help prepare you for your certification.
Cisco professional level certifications are valid for three years.
To recertify, pass ONE of the following before the certification expiration date:
Achieving or recertifying any of the certifications above automatically extends your active Associate and Professional level certification(s) up to the point of expiration of the last certification achieved. For more information, access the How to Recertify page.
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