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Assignment No. 4 has been uploaded on VU-LMS. You are directed to follow the instructions given in the assignment file and submit the solution on VU-LMS till Tuesday, 31 January, 2017.

                          Assignment No. 04
                        Semester: Fall 2016

CS605: Software Engineering II

Total Marks: 10


Due Date: 31/1/2017



Please read the following instructions carefully before submitting assignment:

You need to use MS word document to prepare and submit the assignment on VU-LMS.

It should be clear that your assignment will not get any credit if:


  • The assignment is submitted after due date.
  • The assignment is not in the required format (.doc or docx)
  • The submitted assignment does not open or file is corrupt.
  • Assignment is copied(partial or full) from any source (websites, forums, students, etc)






The objective of this assignment is to learn about:

  • Software Reviews
  • Software Reliability






























Question No. 1


Suppose for a certain project Preliminary design generated 12 defects which were passed on to detailed design. Now at detailed design phase, 6 defects were passed on to the next stage and 6 were amplified at a ratio of 1:1.5. In addition, there were 20 new defects introduced at this (detailed design) stage. Calculate how many defects were passed to next stage by detailed design stage?

Suppose zero percent (0%) defect removal efficiency at each stage.


Provide your answer in following table:



Defects passed to next stage by detailed design stage







Question No. 2


For a certain application


MTTF = 60

MTTR = 5


Calculate the “availability” of the application.


Provide your answer with complete calculation in following table:










Best of Luck!


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Replies to This Discussion

bri mzy ki assignment hy

2 question
MTTF = 60
MTTR = 5

Calculate the “availability”=?

question no 2 from chapter no 30  

question no 1 from lec 28

Question 1

Preliminary design  0+0+10=12

Detailed design6+6*1.5+20=35

unit testing12+23*3+20=91

Integration testing72+0+0=72

Validate testing36+0+0=36

System testing18 +0+0=18

9 passed 



i think calculation me mistake he check kro dobra

kha pe ap btao

unit testing12+23*3+20=91
y 101 ay ga

oh calculation man mistak ho gi si

calculation man koi mistk o gi bt methrd thk hy ap log dakh liye ga kud se b ak bar

0+0+10= 12



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