What does installing a "device enrollment challenge" do on an iPad?
Any requests to install a profile containing Device Enrollment will have come from your corporate MDM (mobile device management) server and so can be trusted if it's a corporate device. If it's a personal device you should ask the head tech about any restrictions which may be put in place on your device by the profile. Chances are there won't be any problems if the profiles have been well implemented but it's worth double checking anyway.