| 101. | In two pass assembler the symbol table is used to store: |
| a. | Label and value |
| b. | Only value |
| c. | Mnemonic |
| d. | Memory Location |
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Answer: (d).Memory Location
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| 102. | Non modifiable procedures are called |
| a. | Serially useable procedures |
| b. | Concurrent procedures |
| c. | Reentrant procedures |
| d. | Topdown procedures |
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Answer: (c).Reentrant procedures
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| 103. | Not an assembler directive |
| a. | XCHG |
| b. | ASSUME |
| c. | SHORT |
| d. | DB |
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Answer: (a).XCHG
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| 104. | In a compiler, the task of scanning the source code, to recognize and classify various elements is known as. |
| a. | Code Optimization |
| b. | Syntactic Analysis |
| c. | Lexical Analysis |
| d. | Semantic Analysis |
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Answer: (c).Lexical Analysis
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| 105. | An example of a compiler-compiler is: |
| a. | JAVA |
| b. | LEX |
| c. | YACC |
| d. | MATLAB |
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Answer: (c).YACC
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| 106. | Consider the following program fragment in assembly language. What is the value of ax and cx registers after the completion of the doloop?
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| a. | ax = FFF5 h and cx = 0 h |
| b. | ax = FFF6 h and cx = 0 h |
| c. | ax = FFF7 h and cx = 0A h |
| d. | ax = FFF5 h and cx = 0A h |
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Answer: (b).ax = FFF6 h and cx = 0 h
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| 107. | Consider the following assembly program segment. The contents of the destination register ax (in hexadecimal) and the status of Carry Flag (CF) after the execution of above instructions are:
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| a. | ax = 003CH; CF = 0 |
| b. | ax = 001EH; CF = 0 |
| c. | ax = 007BH; CF = 1 |
| d. | ax = 00B7H; CF = 1 |
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Answer: (a).ax = 003CH; CF = 0
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| 108. | Match the description of several parts of a classic optimizing compiler in List - I, with the names of those parts in List - II: List - I (a) A part of a compiler that is responsible for recognizing syntax. (b) A part of a compiler that takes as input a stream of characters and produces as output a stream of words along with their associated syntactic categories. (c) A part of a compiler that understand the meanings of variable names and other symbols and checks that they are used in ways consistent with their definitions. (d) An IR-to-IR transformer that tries to improve the IR program in some way (Intermediate representation). List - II (i) Optimizer (ii) Semantic Analysis (iii) Parser (iv) Scanner Code: (a) (b) (c) (d) |
| a. | (iii) (iv) (i) (ii) |
| b. | (iv) (iii) (ii) (i) |
| c. | (ii) (iv) (i) (iii) |
| d. | (ii) (iv) (iii) (i) |
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Answer: (a).(iii) (iv) (i) (ii)
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