71. | A Top-down Parse generates: |
a. | Right-most derivation |
b. | Right-most derivation in reverse |
c. | Left-most derivation |
d. | Left-most derivation in reverse |
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Answer: (c).Left-most derivation
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72. | In an absolute loading scheme, which loader function is accomplished by programmer? |
a. | Allocation |
b. | Linking |
c. | Reallocation |
d. | Both a and b |
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Answer: (d).Both a and b
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73. | Symbol table can be used for: |
a. | Checking type compatibility |
b. | Suppressing duplication of error message |
c. | Storage allocation |
d. | All of these above |
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Answer: (d).All of these above
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74. | Linking: |
a. | cannot be performed before relocation |
b. | cannot be performed after relocation |
c. | can be performed both before and after relocation |
d. | is not required if relocation is performed |
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Answer: (b).cannot be performed after relocation
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75. | Which of the following is the most general phase-structured grammar ? |
a. | Regular |
b. | Context-sensitive |
c. | Context free |
d. | Syntax tree |
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Answer: (b).Context-sensitive
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76. | A compiler for a high level language that runs on one machine and produces code for a different machine is called: |
a. | Optimizing |
b. | One pass compiler |
c. | Cross compiler |
d. | Multipass compiler |
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Answer: (c).Cross compiler
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77. | The ‘K’ in LR (K) cannot be: |
a. | 0 |
b. | 1 |
c. | 2 |
d. | None of these |
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Answer: (d).None of these
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78. | Peep-hole optimization is a form of: |
a. | loop optimization |
b. | local optimization |
c. | constant folding |
d. | data flow analysis |
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Answer: (c).constant folding
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79. | An operating system is: |
a. | Collection of hardware components |
b. | Collection of input-output devices |
c. | Collection of software routines |
d. | All the above |
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Answer: (c).Collection of software routines
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80. | A permanent database of a general model of compiler is................... |
a. | Identifier table |
b. | Page map table |
c. | Literal table |
d. | Terminal table |
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Answer: (d).Terminal table
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