Q501. What is state in React?
_State_ of a component is an object that holds some information that may change over the lifetime of the component. The important point is whenever the state object chang...
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Job Interview Questions and Answers Directory
Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (2,728 available).
Q502. How would you scale Scrum across multiple teams?
Scaling Scrum is a problem of coordination, not of adding more Scrum. The first question is whether scaling is needed, because more layers often slow delivery. I keep tea...
Q503. How do you decide what to build next between two competing opportunities?
I compare them against strategy and evidence rather than gut feel. First, do both serve the current strategic goal? An opportunity that is attractive but off strategy com...
Q504. Describe a time you dealt with a customer who was wrong but insisted otherwise.
I separate the relationship from the facts. Being right is not the goal; resolving the issue is. I listen fully and acknowledge their perspective: "I can see why you read...
Q505. 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...
Q506. Why is audience targeting important in paid media?
Audience targeting decides who sees an ad, and it matters because showing the right message to the wrong people wastes money and damages relevance scores. It works on a f...
Q507. How do you keep your CRM data accurate and useful?
Accurate CRM data is what makes forecasting and handovers possible, so I treat updating it as part of the work, not as admin. After every call I log the key points within...
Q508. What are the limitations of code coverage?
Code coverage measures which lines, branches or paths tests execute. It is useful for finding untested code and spotting dead code, and it prevents coverage from silently...
Q509. Explain register allocation in a compiler.
Register allocation assigns the many virtual registers produced by the compiler to the small, fixed set of physical CPU registers. It happens late, after instruction sele...
Q510. How would you analyse and optimise a slow query?
Query optimisation starts by measuring. `EXPLAIN` shows the plan; `EXPLAIN ANALYZE` runs it and reports actual rows and time. Things to look for: sequential scans on larg...