while studying about rdt 1.0 i assumed the physical channel is incorruptible and there is no possibibilty of bit level garbling but a physical layer designer pointed out in real life scenario we had to discredit the assumption and now there can be bit errors during transmission in this scenario what are the three additional protocol capabilities you will need to incorporate to handle the bit errors. (You are familiar with the solution to the problem,now do a reverse mapping)

1.___

2.____

3._____

there are 3 ans.