The Linux ______ command is used to assign an internet address to a network interface.

A. ipconfig

B. winipcfg

C. ifconfig

D. lconfig

Now, let's go through each option and explain why it is right or wrong:

A. ipconfig: This option is incorrect because ipconfig is a command used in Windows operating systems to display the IP configuration of network interfaces. It is not a command used in Linux.

B. winipcfg: This option is incorrect because winipcfg is a command used specifically in Windows 9x/ME operating systems to display the IP configuration of network interfaces. It is not a command used in Linux.

C. ifconfig: This option is correct. ifconfig is a command used in Linux and Unix-like operating systems to configure network interfaces, including assigning internet addresses (IP addresses) to them.

D. lconfig: This option is incorrect because lconfig is not a valid command in Linux. It does not exist as a command used for assigning internet addresses to network interfaces.

Therefore, the correct answer is C. ifconfig.