Q1: A four-channel scope is used to check the counter in the figure given below. Are the displayed waveforms correct?

ANS:B - No

case(1):
q2 will go high at falling edges of qo & q1.
Assume clock skew=0 for simplicity of analysis & take "clock to data delay" under consideration.so we have to consider inputs to "2 right side ff's" will be previous value.

case(2):
if "clock to data delay" is considered to be 0,then q1 & q2 both wave forms are wrong here.

Please correct if anybody found I am wrong.