Class assignment

Can anyone pls explain the meaning of ques class assignment in recursion videos.

Can you provide QN link ?

https://online.codingblocks.com/player/2502/content/859?s=80

You are asked to tell the no of possible strings containing 0 and 1s having no consecutive 1s
Try to compute the string ending with zero and the other ending with 1 separately and compute the answer
https://ide.codingblocks.com/#/s/16995