Java is a programming language and computing platform first released by Sun Microsystems in 1995. There are lots of applications and websites that will not work unless you have Java installed, and more are created every day.
IIS is able to impersonate the IUSR_<computername> account because the user name and password for this account are known by IIS. Before returning a page to the client, IIS checks NTFS file and directory permissions to see if the IUSR_<computername> account is allowed access to the file.
UNIFIED CARRIER REGISTRATION (UCR) All for-hire motor carriers transporting property or passengers and motor private carriers transporting property who are required to register with the United States Department of Transportation (USDOT), as well as brokers, freight forwarders, and leasing companies are subject to the UCRA.