Q391. How would you redesign a course for online delivery?
I start from the learning outcomes and the constraints, not from the technology. First I map which outcomes can be achieved online and which need synchronous or practical...
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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).
Q392. How do you say no to a customer request you cannot fulfil?
I say no to the request, not to the customer. First I make sure I understand what they actually need, because a request is often a proposed solution rather than the real ...
Q393. 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...
Q394. What is the difference between CAC and LTV, and why does their ratio matter?
CAC is the cost of acquiring one customer. LTV is the profit that customer generates over their lifetime. Their ratio tells you whether growth is sustainable. I calculate...
Q395. How do you handle a prospect who goes silent after a demo?
Silence usually means something changed, not that they dislike me. I do not flood their inbox. First I send a short, low pressure note that gives them an easy way to repl...
Q396. Explain boundary value analysis and equivalence partitioning.
Most bugs hide at the edges of valid ranges, because off-by-one and comparison mistakes concentrate there. Boundary value analysis tests just inside, on and just outside ...
Q397. Describe common compiler optimisations.
Optimisation improves the intermediate representation while preserving observable behaviour. Common examples: - Constant folding and propagation: compute `2 * 3` at compi...
Q398. Compare the SQL transaction isolation levels.
SQL defines four isolation levels that trade consistency against concurrency. They are usually described by which anomalies they permit. - Read uncommitted: dirty reads a...
Q399. Walk through the TCP three-way handshake and connection teardown.
TCP opens a connection with a three-way handshake so both sides agree on initial sequence numbers and confirm they can send and receive. 1. Client sends SYN with its init...
Q400. What happens during a context switch and why is it expensive?
A context switch is the act of saving the state of one thread or process and restoring another so execution can resume later. The kernel saves the program counter, regist...