Multiple Choice Questions On System Software And Compiler - Set 1

Following are the multiple choice questions on System Software and Compiler with answers based on the UGC-NET syllabus

1) In which addressing mode the operand is given explicitly in the instruction ?

1. Absolute mode
2. Immediate mode
3. Indirect mode
4. Index mode
5. None of these

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Answer = B
Explanation: In Immediate addressing mode operand is directly found from the instruction. No memory address is required to read the operand.

2) Which of the following is not true ?

1. UGL doesn't support high level seven interaction
2. Many database management system package support 4GLs
3. All of above
4. None of above

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Answer = A 
Explanation: No Explanation

3)  Nonmodifiable procedures are called ?

1. concurrent procedures
2. serially usable procedures
3. reentrant procedures
4. topdown procedures
5. None of above

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Answer = B 
Explanation: No Explanation

4) Which of the following is not a type of assembler ?

1. one pass
2. two pass
3. three pass
4. load and go

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Answer = C 
Explanation: No Explanation 

5) Daisy chain is a device for ?

1. Interconnecting a number of devices to number of controllers
2. Connecting a number of devices to a controller
3. Connecting a number of controller to devices
4. All of above
5. None of above

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Answer = B
 Explanation: No Explanation 

6) Input of Lex is ?

1. set to regular expression
2. statement
3. Numeric data
4. ASCII data

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Answer =  A
Explanation: No Explanation

7) Yacc semantic action is a sequence of ?

1. Tokens
2. Expression
3. C statement
4. Rules

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Answer = C
Explanation: No Explanation 

8) Which of the following software tool is parser generator ?

1. Lex
2. Yacc
3. Both A and B
4. None of these

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Answer = B 
Explanation: No Explanation 

9) A Lex compiler generates ?

1. Lex object code
2. Transition tables
3. C Tokens
4. None of above

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Answer = B 
Explanation: No Explanation 

10) A Compiler has ....... phases ?

1. 7
2. 6
3. 8
4. None of above

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Answer = C 
Explanation: No Explanation 

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