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- Question
Which of the following is not a valid variable name in C?
Options- A. 1 a
- B. a 1 2
- C. a b 123
- D. a b c 123
- Correct Answer
- 1 a
ExplanationFirst character must be alphabet.
Microprocessors problems
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- 1. Which of the following is not a valid real constant in C?
Options- A. 426
- B. 321.0
- C. -621.231
- D. +201.2314 Discuss
Correct Answer: 426
Explanation:
Real constant must have a decimal point.- 2. Which of the following real variable names is not valid in Fortran?
Options- A. BETA
- B. ALPHA
- C. A
- D. AB * 2 Discuss
Correct Answer: AB * 2
Explanation:
Operator is not allowed.- 3. Which of the following computer memories is fastest?
Options- A. Cache
- B. Primary
- C. Mass storage
- D. Off line back up Discuss
Correct Answer: Cache
Explanation:
Cache memory has a speed of about four times the speed of main memory. It is a small high speed memory.- 4. In a computer the instructions, data, intermediate and final results during processing are held in ALU.
Options- A. True
- B. False Discuss
Correct Answer: False
Explanation:
These are not held in ALU. Only computations are done by ALU.- 5. Read the following statements about files in Pascal
- A file is a data structure which consists of a sequence of components of the same type.
- The number of components in a file is variable.
- The components in a file can be accessed only sequentially starting from the beginning of the file.
Options- A. All
- B. 1 and 2 only
- C. 2 and 3 only
- D. 1 and 3 only Discuss
Correct Answer: All
Explanation:
All statements are true.- 6. Consider the following C program int ram
float alpha, gamma
ram = 6400
alpha = 0.562
gamma = alpha * ram + 1
Now consider the following statements about this program- ram is an integer variable
- alpha, gamma are real variables
- *, + are arithmetic operators
- 0.562 may be an integer constant or real constant
Options- A. All
- B. 1, 2, 3 only
- C. 2, 3, 4 only
- D. 1, 2, 4 only Discuss
Correct Answer: 1, 2, 3 only
Explanation:
0.562 is not an integer constant.- 7. Computer virus can hide itself in a diskette but not in a hard disk.
Options- A. True
- B. False Discuss
Correct Answer: False
Explanation:
Computer virus can hide in hard disk also.- 8. IC (instruction cycle), FC (fetch cycle) and EC (executive cycle) are related as
Options- A. IC = FC - EC
- B. IC = FC + EC
- C. IC = FC + 2EC
- D. EC = IC + EC Discuss
Correct Answer: IC = FC + EC
Explanation:
Instruction cycle consists of fetch and execute cycles.- 9. MICR stands for
Options- A. Magnetic Ink Chart Receipt
- B. Magnetic Ink Character Recognition
- C. Magnetic Ink Chart Recognition
- D. Magnetic Ink Character Receipt Discuss
Correct Answer: Magnetic Ink Character Recognition
Explanation:
Magnetic ink character recognition is used in banking.- 10. Binary number 1101.101 is equivalent to decimal number?
Options- A. 13.5
- B. 13.75
- C. 13.625
- D. 13.875 Discuss
Correct Answer: 13.625
Explanation:
Binary .101 equals 0.625 in decimal.
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