(Solved): The problems below refer to the following sequence of instructions,  and assume that it is exec ...

The problems below refer to the following sequence of instructions,  and assume that it is executed on a 5-stage pipelined datapath:

          add $t5, $t2, $t1
          lw $t3, 4($t5)
          lw $t2, 0($t2)
          or $t3, $t5, $t3
          sw $t3, 0($t5)

Answer these questions:

1. Identify the instruction type for the sequence of instructions.
2. Identify the dependencies in the sequence of instructions.
3. If there is no forwarding or hazard detection, insert nops to ensure correct execution.
4. Repeat the previous question but now only use nops only when a hazard cannot be avoided by changing or rearranging these instructions. 
5. If the processor has forwarding but we forget to implement the hazard detection unit, what happens when this code executes?