Regulation: R23 Branch: Information Technology Semester: 2-2

Operating Systems

Verified vs. official syllabus Checked 2026-07-01

Subject names, credits, and semester placement are cross-confirmed against JNTUK's own centrally-administered exam records. Detailed unit topics are sourced from an autonomous JNTUK-affiliated college's published syllabus and have not been independently verified against the university's own document -- autonomous colleges may adapt unit-level content locally.

Unit-wise syllabus

UNIT 01

Operating Systems Overview and System Structures

Introduction, operating system functions, operations, computing environments, free and open-source operating systems; Operating system services, user and operating-system interface; System calls, types of system calls, system programs; OS design and implementation, structure, building and booting an operating system, debugging

UNIT 02

Processes, Threads and CPU Scheduling

Process concept, process scheduling, operations on processes, inter-process communication; Threads and concurrency: multithreading models, thread libraries, threading issues; CPU scheduling: basic concepts, scheduling criteria, scheduling algorithms; Multiple processor scheduling

UNIT 03

Synchronization and Deadlocks

Synchronization tools: the critical section problem, Peterson's solution, mutex locks, semaphores, monitors, classic problems; Deadlocks: system model, deadlock characterization, methods for handling deadlocks; Deadlock prevention, avoidance, detection; Recovery from deadlock

UNIT 04

Memory and Virtual Memory Management

Memory-management strategies: contiguous memory allocation, paging, structure of the page table, swapping; Virtual memory management: demand paging, copy-on-write; Page replacement, allocation of frames, thrashing; Storage management: overview of mass storage structure, HDD scheduling

UNIT 05

File System and Protection

File system interface: file concept, access methods, directory structure; File system implementation: structure, operations, directory implementation, allocation methods, free space management; File-system internals: mounting, partitions and mounting, file sharing; Protection: goals and principles of protection, protection rings, domain of protection, access matrix