Anyone who wants to augment his or her study material for the GWGK exam is the target audience for this guide. However, my intention also is to provide a deeper level of understanding for those who want to read a concise document to gain a fundamental understanding of GW and GK operation in Cisco environments. This guide does not delve into GK/GW minutiae. Instead, it provides a solid foundation on which you can build. For those readers who plan to prepare for additional certifications, this short cut could supplement your study material for other voice-related certifications (including CCIE Voice).