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PREVIOUS YEAR SOLVED PAPERS - November 2017 Paper 3

Avatto > > UGC NET COMPUTER SCIENCE > > PREVIOUS YEAR SOLVED PAPERS > > November 2017 Paper 3

41. Which of the following statements is/are TRUE regarding JAVA ?
(a) Constants that cannot be changed are declared using the ‘static’ keyword.
(b) A class can only inherit one class but can implement multiple interfaces.

  • Option : B
  • Explanation :
    In JAVA, constant are not declared using 'static' keyword and a class can implement multiple interfaces but class can inherit one class only. So, option (B) is correct.
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42. What is the output of the following JAVA program ?
Class Test {
  public static void main(String[] args) {
   Test obj = new Test();
   obj.start();
}
void start() {
  String stra = ”do”;
   String strb = method(stra);
  System.out.print(“: ”+stra + strb);
}
String method(String stra) {
   stra = stra + ”good”;
   System.out.print(stra);
   return“ good”;
  }
}

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43. Statistical software quality assurance in software engineering involves __________ .

  • Option : C
  • Explanation :
    Statistical software quality assurance in software engineering involves tracing each defect to its underlying cause, isolating the vital few causes, and moving to correct them. So, option (C) is correct.
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44. Which of the following statements is/are FALSE with respect to software testing?
S1 : White-box tests are based on specifications; better at telling whether program meets specification, better at finding errors of omission.
S2 : Black-box tests are based on code; better for finding crashes, out of bounds errors, file not closed errors.
S3 : Alpha testing is conducted at the developer’s site by a team of highly skilled testers for software that is developed as a product to be used by many customers.

  • Option : A
  • Explanation :
    Alpha testing is conducted at the developer’s site by a team of highly skilled testers for software that is developed as a product to be used by many customers. Statement about white box testing and black box testing are not correct. Only last statement is correct. So, option (A) is correct.
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45. A signal processor software is expected to operate for 91.25 days after repair, and the mean software repair time is expected to be 5 minutes. Then, the availability of the software is:

  • Option : D
  • Explanation :
    Availability = MTBF /(MTBF+MTTR)*100 = 91.25*24*60 / (91.25*24*60+5)*100 = 99.9962%
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November 2017 Paper 3