Software Engineering

Question 1

Match the problem domains in GROUP I with the solution technologies in GROUP II

GROUP I                                         GROUP II
(P) Service oriented computing                 (1) Interoperability
(Q) Heterogeneous communicating systems        (2) BPMN
(R) Information representation                 (3) Publish-find-bind
(S) Process description                        (4) XML 

• P-1, Q-2, R-3, S-4
• P-3, Q-4, R-2, S-1
• P-3, Q-1, R-4, S-2
• P-4, Q-3, R-2, S-1

Question 2

The following figure represents access graphs of two modules M1 and M2. The filled circles represent methods and the unfilled circles represent attributes. If method m is moved to module M2 keeping the attributes where they are, what can we say about the average cohesion and coupling between modules in the system of two modules?

• There is no change.
• Average cohesion goes up but coupling is reduced.
• Average cohesion goes down and coupling also reduces.
• Average cohesion and coupling increase.

Question 3

A company needs to develop a strategy for software product development for which it has a choice of two programming languages L1 and L2. The number of lines of code (LOC) developed using L2 is estimated to be twice the LOC developed with Ll. The product will have to be maintained for five years. Various parameters for the company are given in the table below.

Parameter	Language L1	Language L2
Man years needed for development	LOC/10000	LOC/10000
Development cost per man year	Rs. 10,00,000	Rs. 7,50,000
Maintenance time	5 years	5 years
Cost of maintenance per year	Rs. 1,00,000	Rs. 50,000

Total cost of the project includes cost of development and maintenance. What is the LOC for L1 for which the cost of the project using L1 is equal to the cost of the project using L2?

• 4000
• 5000
• 4333
• 4667

Question 4

A company needs to develop digital signal processing software for one of its newest inventions. The software is expected to have 40000 lines of code. The company needs to determine the effort in person-months needed to develop this software using the basic COCOMO model. The multiplicative factor for this model is given as 2.8 for the software development on embedded systems, while the exponentiation factor is given as 1.20. What is the estimated effort in person-months?

• 234.25
• 932.50
• 287.80
• 122.40

Question 5

Which one of the following is NOT desired in a good Software Requirement Specifications (SRS) document?

• Functional Requirements
• Non-Functional Requirements
• Goals of Implementation
• Algorithms for Software Implementation

Question 6

The following is the comment written for a C function.

 
        /* This function computes the roots of a quadratic equation
           a.x^2 + b.x + c = . The function stores two real roots
           in *root1 and *root2 and returns the status of validity
           of roots. It handles four different kinds of cases.
           (i) When coefficient a is zero irrespective of discriminant
           (ii) When discriminant is positive
           (iii) When discriminant is zero
           (iv) When discriminant is negative.
           Only in case (ii) and (iii) the stored roots are valid.
           Otherwise 0 is stored in roots. The function returns
           0 when the roots are valid and -1 otherwise.
           The function also ensures root1 >= root2
              int get_QuadRoots( float a, float b, float c,
                 float *root1, float *root2);
        */

A software test engineer is assigned the job of doing black box testing. He comes up with the following test cases, many of which are redundant. 

[caption width="800"] [/caption]

 Which one of the following option provide the set of non-redundant tests using equivalence class partitioning approach from input perspective for black box testing?

• T1,T2,T3,T6

• T1,T3,T4,T5

• T2,T4,T5,T6

• T2,T3,T4,T5

Question 7

The cyclomatic complexity of each of the modules A and B shown below is 10. What is the cyclomatic complexity of the sequential integration shown on the right hand side?

• 19
• 21
• 20
• 10

Question 8

What is the appropriate pairing of items in the two columns listing various activities encountered in a software life cycle?

P. Requirements Capture	 1.Module Development and Integration
Q. Design	         2.Domain Analysis
R. Implementation	 3.Structural and Behavioral Modeling
S. Maintenance	         4.Performance Tuning

• P-3, Q-2, R-4, S-1
• P-2, Q-3, R-1, S-4
• P-3, Q-2, R-1, S-4
• P-2, Q-3, R-4, S-1

Question 9

The following program is to be tested for statement coverage:

begin
  if (a== b) {S1; exit;}
  else if (c== d) {S2;]
       else {S3; exit;}
  S4;
end 

The test cases T1, T2, T3 and T4 given below are expressed in terms of the properties satisfied by the values of variables a, b, c and d. The exact values are not given. T1 : a, b, c and d are all equal T2 : a, b, c and d are all distinct T3 : a = b and c != d T4 : a != b and c = d Which of the test suites given below ensures coverage of statements S1, S2, S3 and S4?

• T1, T2, T3
• T2, T4
• T3, T4
• T1, T2, T4

Question 10

The coupling between different modules of a software is categorized as follows:

   I.   Content coupling
   II.  Common coupling
   III. Control coupling 
   IV.  Stamp coupling
   V.   Data coupling 

Coupling between modules can be ranked in the order of strongest (least desirable) to weakest (most desirable) as follows:

• I-II-III-IV-V

• V-IV-III-II-I

• I-III-V -II-IV

• IV-II-V-III-I