1
GATE CSE 2008
MCQ (Single Correct Answer)
+2
-0.6
Which of the following are NOT true in a pipelined processor?
$$1.$$ Bypassing can handle all RAW hazards
$$2.$$ Register renaming can eliminate all register carried WAR hazards
$$3.$$ Control hazard penalties can be eliminated by dynamic branch prediction.
A
$$1$$ and $$2$$ only
B
$$1$$ and $$3$$ only
C
$$2$$ and $$3$$ only
D
$$1,2$$ and $$3$$
2
GATE CSE 2008
MCQ (Single Correct Answer)
+2
-0.6
For all delayed conditional branch instructions, irrespective of whether the condition evaluate true or false,
A
the instruction following the conditional branch instruction in memory is executed
B
the first instruction in the fall through path is executed
C
the first instruction in the taken path is executed
D
the branch takes longer to execute than any other instruction
3
GATE CSE 2008
MCQ (Single Correct Answer)
+2
-0.6
Which of the following is/are true of the auto increment addressing mode?
$$1.$$ It is useful in creating self relocating code
$$2.$$ If it is included in an Instruction Set Architecture, then an additional $$ALU$$ is required for effective address calculation
$$3.$$ The amount of increment depends on the size of the data item accessed.
A
$$1$$ only
B
$$2$$ only
C
$$3$$ only
D
$$2$$ and $$3$$ only
4
GATE CSE 2008
MCQ (Single Correct Answer)
+2
-0.6
Which of the following must be true for the $$RFE$$ (Return From Exception) instruction on a general purpose processor?
$$1.$$ It must be a trap instruction
$$2.$$ It must be a privileged instruction
$$3.$$ An exception cannot be allowed to occur during execution of an $$RFE$$ instruction.

A
$$1$$ only
B
$$2$$ only
C
$$1$$ and $$2$$ only
D
$$1,2$$ and $$3$$ only
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