Nowadays we work as global teams and with people speaking different languages.
Some times you may face a situation where the Linux OS is installed with preference to another language e.g. French. The layout of french keyboard is different from that of US keyboard. Thus if you type “A” in US keyboard it will actually print “Q” . (Here you can get images of french keyboard)
This can be very frustrating since you are already accustomed with the US keyboard layout.