Question
Which SDLC model integrates testing at every phase of
development, ensuring defects are identified early?Solution
The V-Model, also known as the Verification and Validation model, integrates testing at every phase of development. For each development stage, a corresponding testing phase is planned, ensuring defects are detected early. This parallel approach minimizes rework and enhances product quality. The V-Model is especially useful for projects with well-defined requirements, where early detection of issues is critical. Each testing phase, such as unit testing, integration testing, and system testing, corresponds to a specific development stage, creating a "V" shape in the development timeline. Why Other Options Are Incorrect: 1. Waterfall Model: Testing is conducted after the development phase, delaying defect detection. 2. Agile Model: Incorporates iterative testing but does not align testing with each development stage. 3. Spiral Model: Focuses on iterative development with risk assessment but not integrated testing. 4. Incremental Model: Adds functionality incrementally but does not align testing phases with development.
What does the following list comprehension produce?
result = [x**2 for x in range(5) if x % 2 == 0]
print(result)
In Python, which of the following functions in the Pandas library is used to merge two DataFrames df1 and df2 on a common column id?
Which of the following is the main characteristic that differentiates random sampling from non-random sampling techniques?
Which of the following is the best approach for presenting data-driven insights to a non-technical audience?
In healthcare, how can trend analysis most effectively enhance patient care?
Which of the following SQL commands is classified as a Data Definition Language (DDL) command?
Which sampling technique is most suitable when a population has distinct subgroups that should be represented proportionally?
Which of the following R functions is most appropriate for fitting a linear regression model?
In the context of metadata for data management, which of the following examples best illustrates descriptive metadata?
Which of the following cryptographic algorithms is an example of symmetric encryption and employs a block cipher with a key size of up to 256 bits?
