Why will my computer not recognize the ota file for nexus 6 7.1.1

[AC Question]

When I get to the command prompt and it recognizes my device in platform tools adb I am unable to sideload the OTA update for my Nexus 6 as my laptop will will not recognize the "Shamu-ota-n6f26q-f4492864.zip" folder. I read the following "is not recognized as an internal or external command, operable program or batch file." What am I doing wrong?