Page 20 - SOFTWARE TESTING & QUALITY ASSURANCE

Unit 1: Introduction to Software Testing

way of money or by way of replacing the defective product. It can also damage the reputation of the
company.
• The Waterfall model of software development is a traditional model which follows sequential
method of software development. V and Spiral models, which employ testing as an integral part of
software development, are more efficient than the Waterfall model. Agile is considered to be the
most advanced and efficient type of software development model. Extreme Programming (XP) is a
method developed based on the agile model, which uses test driven development to develop highly
efficient software.
1.5 Keywords
Confined: Within bounds or limits
IEEE: IEEE is the acronym of Institute of Electrical and Electronics Engineers. It is the world's largest
professional association dedicated to advancing technological innovation and excellence for the benefit
of humanity. They foster development of national and international standards.
Race Condition: A race condition occurs when a program doesn't work as it is supposed to, because of
an unexpected call or ordering of events that produce contention or a clamor over the same resource.
Recursion: Recursion is a process of defining or expressing a function or procedure in terms of itself.

1.6. Self Assessment

1. State whether the following statements are true or false:
(a) Software testing identifies the areas of weakness in an application or product.
(b) The year 1988-2000 followed prevention oriented approach.
(c) Testing is a process of executing a program with the intent of finding errors -- was pointed
out by Myers.

(d) Some compromises will be made in the requirements or design of the software to meet the
delivery requirements.
(e) Sometimes efficient tools such as editors, compilers, and debuggers generate wrong codes
which cause errors in the software.

(f) The analysis phase defines the software and the hardware requirements relevant for the
software development process.
2. Fill in the blanks:
(a) Software testing is an _______________________ and _______________________ process to
detect a mismatch, a defect or an error.
(b) Many bugs occur due to lack of _______________________ when a developer tries to modify
software developed by another developer.

(c) The _______________________ of fixing a bug differs depending on the development stage
at which it is detected.
(d) In Test Driven Development (Agile), the _______________________ is not written until the
test code does not clear the test case requirements test.
3. Multiple Choice Questions

(a) Demonstration oriented testing was followed during which of the following period?
(i) 1957-1978 (ii) 1979-1982 (iii) 1983-1987 (iv) 1988-2000
(b) Which of the following factors causes errors due to incorrect usage of logic or syntax?
(i) Communication failure (ii) Human (iii) Lack of skilled testing (iv) Unrealistic timeframe

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