Basic MCQ Related to CSE concept

For a CSE multiple-choice round, slow down on absolute words such as always, never, and O(1), because they are often the differentiator. Restate the governing definition before selecting an option: a stable sort preserves order among equal keys; a deadlock requires all four Coffman conditions; a cache hit is not guaranteed constant latency across every architecture; TCP is a byte stream rather than message-preserving transport. Eliminate distractors with a small counterexample instead of relying on a vague recollection. When two answers look close, identify the layer they describe, such as process versus thread, physical memory versus virtual address space, or authentication versus authorization. Explain your choice out loud in one or two sentences so the interviewer can evaluate reasoning. For algorithm questions, distinguish average, amortized, and worst-case Big-O notation: hash lookup is O(1) expected but can be O(n) worst case. Review OS, DBMS, networks, OOP, and data-structure invariants systematically rather than memorizing isolated facts.