Software Engineering

Question 21

Consider the basic COCOMO model where E is the effort applied in person-months, D is the development time in chronological months, KLOC is the estimated number of delivered lines of code (in thousands) and a_b, b_b, c_b, d_b have their usual meanings. The basic COCOMO equations are of the form.

• E = a_b(KLOC) exp(b_b), D = c_b(E) exp(d_b)
• D = a_b(KLOC) exp(b_b), E = c_b(D) exp(d_b)
• E = a_b exp(b_b), D = c_b(KLOC) exp(d_b)
• E = a_b exp(d_b), D = c_b(KLOC) exp(b_b)

Question 22

Consider a software program that is artificially seeded with 100 faults. While testing this program, 159 faults are detected, out of which 75 faults are from those artificially seeded faults. Assuming that both real and seeded faults are of same nature and have same distribution, the estimated number of undetected real faults is ____________.

• 28
• 175
• 56
• 84

Question 23

Consider a software project with the following information domain characteristic for calculation of function point metric.

  Number of external inputs (I) = 30
  Number of external output (O) = 60
  Number of external inquiries (E) = 23
  Number of files (F) = 08
  Number of external interfaces (N) = 02 

It is given that the complexity weighting factors for I, O, E, F and N are 4, 5, 4, 10 and 7, respectively. It is also given that, out of fourteen value adjustment factors that influence the development effort, four factors are not applicable, each of he other four factors have value 3, and each of the remaining factors have value 4. The computed value of function point metric is ____________

• 612.06
• 212.05
• 305.09
• 806.9

Question 24

Consider three software items: Program-X, Control Flow Diagram of Program-Y and Control Flow Diagram of Program-Z as shown below The values of McCabe’s Cyclomatic complexity of Program-X, Program-Y and Program-Z respectively are

• 4, 4, 7
• 3, 4, 7
• 4, 4, 8
• 4, 3, 8

Question 25

In a software project, COCOMO (Constructive Cost Model) is used to estimate

• effort and duration based on the size of the software
• size and duration based on the effort of the software
• effort and cost based on the duration of the software
• size, effort and duration based on the cost of the software

Question 26

A software organization has been assessed at SEI CMM Level 4. Which of the following does the organization need to practice beside Process Change Management and Technology Change Management in order to achieve Level 5 ?

• Defect Detection
• Defect Prevention
• Defect Isolation
• Defect Propagation

Question 27

A software project involves execution of 5 tasks T1, T2, T3, T4 and T5 of duration 10, 15, 18, 30 and 40 days, respectively. T2 and T4 can start only after T1 completes. T3 can start after T2 completes. T5 can start only after both T3 and T4 complete. What is the slack time of the task T3 in days?  

• 0
• 3
• 18
• 30

Question 28

Consider the following program module:

int module1 (int x, int y) {
    while (x! = y) {
        if (x > y)
             x = x - y,
        else y = y - x;
        }
    return x;
}

What is Cyclomatic complexity of the above module?

• 1
• 2
• 3
• 4

Question 29

Assume that the delivered lines of code L of a software is related to the effort E in person months and duration t in calendar months by the relation L P* (E/B)^1/3 * t^4/3, where P and B are two constants for the software process and skills factor. For a software project, the effort was estimated to be 20 person months and the duration was estimated to be 8 months. However, the customer asked the project team to complete the software project in 4 months. What would be the required effort in person months?  

• 10
• 40
• 160
• 320

Question 30

A software was tested using the error seeding strategy in which 20 errors were seeded in the code. When the code was tested using the complete test suite, 16 of the seeded errors were detected. The same test suite also detected 200 non-seeded errors. What is the estimated number of undetected errors in the code after this testing?

• 4
• 50
• 200
• 250