Dear Students, It’s the time to connect with us and improve your marks in the NPTEL week 8th assignment of software testing . Here, in this post, I shall provide you hint of answers to this assignment before the deadline.
NPTEL Software Testing Assignment 8 Answers
Q1. Consider the regular expression (a+b)⋅(a+b)∗ over the alphabet Σ={a,b}. Which of the following options represents a list of words generated by this regular expression?
D. All of the above.
Answer: D. All of the above.
1000+ Students helped through Instant Notifications on telegram
Q2. For the same regular expression (a+b)⋅(a+b)∗ , which of the following options represents the language corresponding to the regular expression?
a. The language is the set of all words over a and b that have at least one a and at least one b in them.
b. The language is the set of all words over a and b that have at least one a or at least one b in them.
Answer: b. The language is the set of all words over a and b that have at least one a or at least one b in them.
Q3. While parsing a program to extract syntactic information, which of the following defines how characters form tokens?
a. Regular expressions.
b. Context-free grammars.
c. Context-sensitive grammars.
d. The normal form of the grammar.
Answer: a. Regular expressions.
Q4. Consider the context-free grammar given by G=(N,T,P,S) where N={S,X},T={a,b},P={S→aXb,X→ab}. Which of the following is the language generated by this grammar?
a. The language generated by G is {w|w=aabb}.
b. The language generated by G is {w|w is of the form anbn,n≥1}
Answer: a. The language generated by G is {w|w=aabb}.
Q5. State yes or no: Is the ground string in mutation testing the same as the program under test?
a. Yes
b. No.
Answer: a. Yes
Q6. Which of the following is a mutant that can be killed by any test case?
a. Dead mutant.
b. Equivalent mutant.
c. Trivial mutant.
d. Idempotent mutant.
Answer: c. Trivial mutant.
Q7. Suppose a decision statement like if (x < 0 && z == 5) is mutated to get if (x > 0 && z == 5) then it is an example of which kind of mutation operator?
a. Replacing a logical operator.
b. Replacing a relational operator.
c. Replacing a decision statement.
d. Replacing a condition statement.
Answer: b. Replacing a relational operator.
Q8. As per the lectures, replacing a particular assignment statement with a statement like failOnZero() is an example of a mutation operator applied at which of the levels in testing?
a. Program level.
b. Integration level.
c. Statement level.
d. De-bugging level.
Answer: a. Program level.
Q9. A programmer decides to save time and apply two or three mutation operators together to increase the chances of finding many errors together. Is this considered to be a useful strategy in mutation testing?
a. Yes, it will find many errors early.
b. No, mutation operators work best when applied one at a time.
Answer: b. No, mutation operators work best when applied one at a time.
Q10. State true or false: Mutation testing can be used to show that a program behaves identically when a particular operation is replaced or removed.
a. True
b. False
Answer: a. True
| TELEGRAM FOR NOTIFICATION | Click Here |
| Follow on Google News (in one click) | Click Here |
Disclaimer: These answers are provided only for the purpose to help students to take references. This website does not claim any surety of 100% correct answers. So, this website urges you to complete your assignment yourself.
Also Available:
