Software Reliability Software Engineering Questions-Answers

Software Reliability Software Engineering Questions-Answers

Answer: iv
Explanation:

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Answer: iv
Explanation:
try to understand…
Mean Time Between Failures (MTBF) = 30 days
Mean Time to Repairs (MTTR) = 10 minutes
Availability=? // need to find availability
Step-1: Given repair time in minutes, so we have to convert failure time in minutes.
30 days= 30 âˆ— 24 âˆ— 60 minutes
= 43,200 minutes
Step-2: Given options in percentages. We have to find availability in percentages.
Availability=(100-((10 / 43,200)âˆ—100))%
= 100-0.023%
= 99.97%
so the answer will be option- D with 99.97%

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Answer: iii
Explanation:
try to understandâ€¦
Mean Time Between Failures (MTBF)= 30 days
Mean Time to Repair (MTTR) =12 hours.
Availability=? //need to find availability
Step-1: First we have to convert number of days into hours
30 days= 30 * 24 = 720 hour.
Step-2: The availability of a system is
Availability = MTBF / (MTBF + MTTR)
= 720 / (720 + 12)
= 0.9836 (or) 98.36%
so the answer will be option- c with 98.36%

Answer: ii
Explanation:

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Answer: iii
Explanation:
Reliability of software is dependent on number of errors present in software.

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Answer: i
Explanation:
Reliability of software is dependent on number of errors present in software.

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Answer: iv
Explanation:
lets try to understand..
Program P fails when either P1 fails or P2 fails, i.e., â€‹ failure of P1 + failure of P2â€‹ .
But this will also contain the case when both P1 and P2 fails at the same time, i.e., â€‹ failure of P1 âˆ© failure of P2â€‹ , since this case will be already be counted on (â€‹ P1+P2â€‹ ).
Therefore, our final answer will be â€‹ failure of P1 + failure of P2 – (failure of P1 âˆ© failure of P2)

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Answer: ii
Explanation:
try to understand..
Estimated lines of code of P : 33480 LOC
Average productivity for P : 620 LOC per person-month
Number of software developers : 6
Average salary of a software developer : 50000 per month
Step-1: Estimated development effort (in person-months) = 33480 /620
E = 54
Step-2: Estimated development time (in months) = 54/6
D = 9 months
Step-3: Estimated development cost (in Lac) = 50000 * 6 * 9 = 27 lacs

Answer: iii
Explanation:

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Answer: ii
Explanation:

Software Reliability Software Engineering Questions-Answers

Answer: iv
Explanation:

Answer: iii
Explanation:

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Answer: ii
Explanation:

Software Reliability Software Engineering Questions-Answers

Answer: iii
Explanation:

Answer: ii
Explanation:

Answer: ii
Explanation:

Answer: iv
Explanation:

Answer: i
Explanation:

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Answer: iv
Explanation:

Software Reliability Software Engineering Questions-Answers

Answer: ii
Explanation:

Answer: ii
Explanation:

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Answer: iv
Explanation:
lets try to understand…
->> Functional Point(FP)=352
->>Team=4 persons
->>Average each person(FP) productivity=8
->>Architect month salary=80,000
->>Programmers month salary=260,000 — Tester month salary=50,000
->>projected cost of project=?
Step-1:
Total number of months=Functional Point(FP) / (Team Average each person(FP) productivity)
= 352 / (48) = 352 / 32 = 11 months
Step-2:
Total cost of the project= (one Architect month salary + 2Programmers month salary + one tester month salary) * Total number of months
= (80000 + 2 * 60000 + 50000) * 11
= â‚¹ 27,50,000

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Answer: iv
Explanation:

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