NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
MARCH/APRIL 2015 EXAMINATION

COURSE CODE:                                                                              CIT432

COURSE TITLE:                                                                             Software Engineering 2

TIME ALLOWED:                                                                          2  Hours

INSTRUCTIONS:                                                                            Answer any Four (4) Questions

Q1.a     Define software maintenance.                                                                                            (2.5 Marks)

      b.   List and explain the two types of low level languages                                                       (7 Marks)

      c.    List and explain four (4) types of software conversion                                                    (8 Marks)

Q2.a     List two (2) advantages and disadvantages of a Build-and-Fix model.                          (6 Marks)

      b.   Define feasibility study                                                                                                        (3.5 Marks)

      c.    List the four reasons for articulating software life-cycle model                                                  (8 Marks)

Q3.a     Mention 5 reasons why one would study software engineering                                                (5 Marks)

      b.   Define software conversion                                                                                                           (3.5 Marks)

      c.    List and explain two (2) purposes of software testing                                                      (5 Marks)

     d.    List 4 advantages of a questionnaire                                                                                   (4 marks)

Q4.a     Define Utility Software                                                                                                        (1.5 Marks)

      b.   List three (3) advantages and disadvantages of rapid prototyping model                     (6 marks)

      c.    Explain the following software life-cycle models

• Build-and-Fix model
• Incremental model
• Rapid prototyping model
• Spiral model
• Waterfall model                                                                                                        (10 marks)

Q5.a     List and explain the five (5) generations of computer software                                                 (10 marks)

      b.   Explain blackbox and whitebox testing                                                                               (4 marks)

      c.    Define iteration structure with an example                                                                      (1.5 marks)

     d.    Define integration testing with an example                                                                       (2 marks)

Q6.a     Define software testing and integration.                                                                           (3.5 marks)

      b.   List and explain 3 types of software testing.                                                                      (6 marks)

      c.    List the phases/stages involved in waterfall model.                                                          (8 marks)