Citi SDE-intern interview questions

Conducted virtually (MS Teams/Zoom). Focus areas: Core DSA (arrays, linked lists, stacks, queues, trees, graphs, DP). OOP concepts (inheritance, polymorphism, abstraction, encapsulation). Databases (SQL queries, indexing, normalization). OS & CN basics (deadlocks, paging, TCP/IP, HTTP vs HTTPS, etc.). Coding exercise: Solve a small problem live or explain approach to given problem. Interviewers may also ask about your projects and internship experiences.