Doubt in Pipelining Terminology

Question

In pipelining questions we have "If operand forwarding is there " and     "If operand forwarding is not there " Please explain this difference and how to draw the chart for both the cases .

Answer 1

if operand forwarding use / Data forwarding use then in this case your one clock time will be save .......if reverse the vice versa ...it apply in the case of R-W hazard or true dependency,in this case it is not go write back stage direct go in register for  execution of next  instruction