Lead-in This course covers many of the System namespaces. Security namespaces. NET Framework. Console namespace for printing output to the console. Drawing namespaces for building a form with buttons that interacts with the user. Reflection namespace for storing version and key file information in an assembly. Collections for maintaining collections of data. IO namespace for reading and writing to files. Sockets namespaces for transmitting data over the network. Serialization namespace for persisting objects to storage.