Q1. Explain Big O notation with common complexities.
Big O describes how runtime or memory grows with input size, ignoring constants and lower-order terms. From fastest to slowest: - O(1) constant: hash lookup, array index....
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Q2. What is a stakeholder analysis and how do you do one?
Stakeholder analysis identifies the people who affect or are affected by a change, and works out how to engage them. I start by listing everyone: users, managers, IT, fin...
Q3. What is semantic analysis and what is a symbol table?
After parsing, semantic analysis checks that the program is meaningful, not merely grammatically valid. It enforces rules the grammar cannot express. Typical jobs: - Buil...
Q4. How do you perform a variance analysis against budget?
Variance analysis compares actual results with the budget or forecast and explains the gap. I start by calculating the variance in absolute terms and as a percentage, the...
Q5. How do you build and analyse a JavaScript library bundle?
Library builds differ from app builds: you usually bundle to ESM and CommonJS, externalise peer dependencies such as React or Vue so consumers do not get duplicates, gene...
Q6. How do you assess whether a company is financially healthy?
I look at profitability, liquidity, leverage and cash generation together, because any single ratio can mislead. Profitability: gross and net margin, and the trend over s...
Q7. How do you detect and handle outliers in data analysis?
Outliers can be data errors, rare genuine events, or informative signals. Decide whether to remove, cap or keep them based on context, never automatically. Detection meth...