Q1. What is the difference between value types and reference types?
Value types store their data directly and are copied on assignment. Reference types store a reference to heap data, and copying copies the reference. - Value types: numer...
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Q2. What is the difference between a pointer and a reference?
A pointer is a variable that stores an address. It can be null, reassigned and used with pointer arithmetic. A reference is an alias for an existing object: it must be in...
Q3. Explain the borrow checker with an example.
The borrow checker enforces the borrowing rules at compile time: you may have either one mutable reference or any number of immutable references, and references must alwa...
Q4. Explain the TDD red-green-refactor cycle.
Test-driven development is a short cycle that drives design from tests. 1. Red: write a failing test for the smallest next behaviour. It must fail, otherwise it proves no...
Q5. What is the difference between ref and reactive, and what are the pitfalls?
ref creates a reactive reference that can hold any value, including primitives, and is accessed through .value in JavaScript while auto-unwrapping in templates. reactive ...
Q6. What are lifetimes in Rust and when do you need to annotate them?
Lifetimes are generic annotations that describe how long references remain valid, so the compiler can prove they never dangle. Most lifetimes are elided and invisible in ...
Q7. How do you manage infrastructure drift in Terraform?
Drift is a difference between real infrastructure and Terraform state, usually caused by manual changes. Detect: - terraform plan refreshes state and shows differences. -...
Q8. How does Python memory management work?
CPython combines: - Reference counting for immediate reclamation. Every object tracks how many references point to it; when the count hits zero it is freed. - A cyclic ga...
Q9. What is the difference between an access token and a refresh token?
An access token is short-lived, typically minutes, and is presented to APIs to authorize requests. If it leaks, the exposure window is small. It is usually a JWT so resou...
Q10. Tell me about a time a lesson failed and how you adapted.
Early in my teaching I planned an activity that depended on students already understanding a concept they had not secured. Within ten minutes it was clear: most were conf...