(a) What is Regression testing and why is it important? (b) What is a Sandbox? Why is it used in Software Development? (c) What is meant by deadlock…

(a) What is Regression testing and why is it important?

(b) What is a Sandbox? Why is it used in Software Development?

(c) What is meant by deadlock in the context of operating systems? How can we detect and prevent deadlock?

(d) How can we create a file and a directory using Linux commands?

From the BCS Technical Cadre (CSE) October 2025 – 49th BCS Written (Special) (BPSC) exam, question 121 of 123.

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