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Data forwarding in pipelining

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Data forwarding is used to avoid which type  of conflict??

(1) RAW

(2) WAR

(3) WAW

(4) RAR
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2 Answers

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option 1) RAW , Data Forwarding is used to avoid RAW type dependencies

    WAR and WAW dependencies occur during out of order execution and can be  solved by changing the order.
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