Subject notes, important questions and revision material for computer science courses and exams.
Exam-focused notes on the OSI and TCP/IP models, the physical, data link, network, transport and application layers, with 12 solved numericals checked by code and a last-minute checklist.
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Exam-focused DBMS revision notes covering keys, the ER model, relational algebra, SQL, normalization up to BCNF with one worked example, transactions, concurrency control and indexing, ending with a last-minute checklist.
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Important operating systems questions with concise answers, grouped by unit: processes and threads, CPU scheduling, synchronization, deadlocks, memory management and file systems, with solved scheduling, Banker's algorithm, page replacement and disk scheduling problems.
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