Q1. How do you differentiate instruction for mixed-ability learners?
I differentiate in content, process and product, and I plan it before the lesson, not on the fly. First I know where students are, through a short diagnostic, prior work ...
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Q2. What are the Redis data structures and what is each used for?
Redis exposes several core data types, each with tailored commands. - Strings: counters, cached serialized objects and rate limiters using INCR and SETEX. - Hashes: objec...
Q3. A train travels 300 km in 3 hours, then 200 km in 2.5 hours. What is its average speed?
Average speed is total distance divided by total time, not the average of the two speeds. Total distance = 300 + 200 = 500 km. Total time = 3 + 2.5 = 5.5 hours. Average s...
Q4. How would you decide whether to invest more in SEO or paid search?
I would not choose on gut feel. I would decide using payback, intent and time horizon. Paid search is fast and controllable but stops the moment spend stops. SEO compound...
Q5. Walk me through how you run a discovery call.
A discovery call is a structured conversation to understand whether there is a real problem worth solving, and to qualify the opportunity. I open with context and permiss...
Q6. What is the Central Limit Theorem and why does it matter?
The Central Limit Theorem says that the sampling distribution of the sample mean approaches a normal distribution as the sample size grows, regardless of the shape of the...
Q7. What is the difference between supervised and unsupervised learning?
Supervised learning uses labelled examples, learning a mapping from inputs to known outputs. Tasks include classification (predict a category, such as spam or not) and re...
Q8. How does Redis persistence work with RDB and AOF?
Redis offers two persistence mechanisms. RDB takes point-in-time snapshots at configured intervals, for example save 900 1 snapshots after 900 seconds if at least one key...
Q9. What is the CAP theorem and how does it guide decisions?
A distributed store can guarantee only two of three during a network partition: Consistency (every read sees the latest write), Availability (every request gets a non-err...
Q10. Walk me through how you run product discovery.
Discovery is how we reduce risk before committing to build. I treat it as continuous, not a phase. I start with the problem and the target customer, and I review existing...