A comprehensive BCA course covering all key units of Operating Systems Notes,
from process management and memory allocation to file systems, scheduling, and security mechanisms.
Explore the units below for detailed content. Want’s to explore more subjects – Study Hub Zone
Course Units
Unit 1: Introduction to Operating Systems
Unit 2: Process Management
Unit 3: Threads and Concurrency
Unit 4: Deadlocks and Memory Management
Unit 5: File Systems and I/O Management
Syllabus: Operating Systems Notes
UNIT – 1
(a) Introduction to Operating Systems –
i) Definition, need, and functions of OS
ii) Types of operating systems – batch, multitasking, time-sharing, real-time, distributed, embedded
iii) System components – kernel, shell, system calls
(b) Operating System Services –
Process management
Memory management
File system management
I/O system management
Security and protection
UNIT – 2
Process Management:
Process concept – PCB, states, life cycle
Process scheduling – scheduling queues, context switching
Schedulers – long-term, short-term, medium-term
Scheduling algorithms – FCFS, SJF, Priority, Round Robin, Multilevel Queue
UNIT – 3
Threads and Concurrency:
Threads – single vs multithreaded processes
Multithreading models
Synchronization – critical section problem
Semaphores and mutex
Classical problems of synchronization – producer-consumer, readers-writers, dining philosophers
UNIT – 4
Deadlocks and Memory Management:
Deadlock – definition, necessary conditions
Deadlock prevention, avoidance (Banker’s Algorithm), detection and recovery
Memory management – contiguous allocation, paging, segmentation
Virtual memory – demand paging, page replacement algorithms (FIFO, LRU)
UNIT – 5
File Systems and I/O Management:
File concepts – attributes, types, operations
Directory structures – single-level, two-level, tree, acyclic graph
File allocation methods – contiguous, linked, indexed
Disk scheduling – FCFS, SSTF, SCAN, LOOK
I/O hardware and software