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In a single pass assembler, most of the forward references can be avoided by putting the restriction

  1. on the number of strings/lifereacts.
  2. that the data segment must be defined after the code segment.
  3. on unconditional rump.
  4. that the data segment be defined before the code segment.
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2 Answers

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Option D..That the Data segment must be defined before the cide segment to avoid forward references.
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answer;- (d)

reason:-

two methods can be used -

either all labels used in forward references are defined in the source program before they are referenced

or

forward references to data items are prohibited.
Answer:

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