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Higher Study | Computer Organization and Architecture | Pipelining Hazards

Which of the following hazards occurs when the pipeline makes the wrong decision on a branch prediction and therefore brings instructions into the pipeline that must subsequently be discarded? 
The locality of reference concept will fail in which of the following cases? Where there are
Consider the following code sequence having five instructions I1 to I5. Each of these instructions has the following format. OP Ri, Rj, Rk Where operation OP is performed on contents of registers Rj and Rk and the result is stored in register Ri I1: ADD R1, R2, R3 I2: MUL R7, R1, R3 I3: SUB R4, R1, R5 I4: ADD R3, R2, R4 I5: MUL R7, R8, R9 Consider the following three statements. S1: There is an anti-dependence between instructions I2 and I5 S2: There is an anti-dependence between instructions I2 and I4 S3: Within an instruction pipeline an anti-dependence always creates one or more stalls Which one of the above statements is/are correct?
For a pipelines CPU with a single ALU, consider the following : A. The j + 1st instruction uses the result of jth instruction as an operand B. Conditional jump instruction C. jth and j + 1st instructions require ALU at the same time Which one of the above causes a hazard?
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