What is the difference between std and cbs?

WHAT IS THE DIFFERENCE BETWEEN STD AND CBS?

Question asked from: http://www.carandbike.com/honda-bikes/cb-hornet-160r/price-in-chengalpattu

STD has a front disc brake and rear drum, CBS or Combined Braking System has disc brakes both front and rear and brakes on both wheels are activated simultaneously whether you use the front brake lever or the rear brake pedal.