Condensed Placement Preparation Syllabus
OS Fundamentals · Process Management · Memory · File Systems · Interview Ready
A concise, placement-focused syllabus — covers every key concept without overloading.
Module 1
Module 2
Module 3
Module 4
Module 5
Module 6
Learn recurring patterns, not one-off tricks — the fastest path to solving new problems.
Every module ends with an assessment or drill mapped to the way rounds are actually run.
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Operating systems for interviews, kept to what gets asked: processes versus threads, context switching, CPU scheduling algorithms with worked Gantt charts and average waiting time, synchronisation with mutexes, semaphores and the classic producer–consumer and reader–writer problems, deadlock conditions with detection, avoidance and Banker's algorithm.
Memory management is covered end to end — contiguous allocation, paging, segmentation, page tables, TLB, virtual memory, page replacement algorithms with page-fault counts — followed by file systems and disk scheduling. Every module ends with the short-answer questions interviewers use to check whether you understood or memorised.
OS is a guaranteed section in core-CS technical rounds at TCS, Infosys, Wipro, Capgemini and Accenture, and it shows up in product-company interviews through threading, locking and memory questions. The syllabus is finite, so it is one of the fastest scoring subjects available to you.
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Process versus thread, CPU scheduling, deadlock, semaphores and mutexes, paging and virtual memory, and page replacement algorithms. Numerical questions usually come from scheduling and page replacement.
Work through the scheduling and page replacement numericals first, then the deadlock four conditions and the synchronisation problems. The free OS Essentials course is built for that one-sitting pass.
Yes. Core CS subjects — OS, DBMS, CN and OOP — form the bulk of the technical round for CSE and IT students in those processes.
Paging splits memory into fixed-size pages and frames and removes external fragmentation; segmentation splits by logical unit with variable sizes, matching program structure but allowing external fragmentation.