Your roadmap · आपका रोडमैप
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Admission & first meetingप्रवेश और पहली मुलाकातEnquire at your nearest NDSS centre, meet the teacher, fix the batch time and get your study material.
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Part 1 of the syllabusपाठ्यक्रम भाग 1Unit-wise coaching with notes and doubt classes.
Unit 1: Introduction to Operating SystemsUnit 2: Process Management and CPU SchedulingUnit 3: Process Synchronization and Deadlocks
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Part 2 of the syllabusपाठ्यक्रम भाग 2Unit-wise coaching with notes and doubt classes.
Unit 4: Memory ManagementUnit 5: File and Disk Management
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Unit tests & assignmentsयूनिट टेस्टRegular tests in the university / board pattern.
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Semester 4 exam (university / board)विश्वविद्यालय / बोर्ड परीक्षाPrevious papers and full revision before the exam.
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Online tests & resultऑनलाइन टेस्ट और रिज़ल्टTake the tests online; your marks and result show in your student login and at the centre.
Syllabus · पाठ्यक्रम
1 subject · 5 chapters · 30 topics
01Unit 1: Introduction to Operating Systems
5 topics+
- Definition and functions of an OS
- Batch, multiprogramming, time-sharing, real-time and distributed OS
- OS services and system calls
- Kernel - monolithic and microkernel
- Examples - Windows, Linux, Android
02Unit 2: Process Management and CPU Scheduling
7 topics+
- Process concept and process states
- Process Control Block
- Threads - user and kernel level
- Context switching
- Scheduling criteria
- FCFS, SJF, priority and round robin scheduling
- Gantt chart, waiting time and turnaround time
03Unit 3: Process Synchronization and Deadlocks
6 topics+
- Critical section problem
- Semaphores - binary and counting
- Producer-consumer and readers-writers problems
- Deadlock - necessary conditions
- Resource allocation graph
- Deadlock prevention, avoidance (Banker's algorithm), detection and recovery
04Unit 4: Memory Management
7 topics+
- Logical and physical address
- Contiguous allocation - first fit, best fit, worst fit
- Internal and external fragmentation
- Paging and segmentation
- Virtual memory and demand paging
- Page replacement - FIFO, LRU, Optimal
- Thrashing
05Unit 5: File and Disk Management
5 topics+
- File concepts, attributes and operations
- Access methods - sequential, direct, indexed
- Directory structures
- File allocation - contiguous, linked, indexed
- Disk scheduling - FCFS, SSTF, SCAN, C-SCAN
About this course
You will be able to
- Explain the functions, structure and types of operating systems
- Describe process states, PCB, threads and inter-process communication
- Solve CPU scheduling problems using FCFS, SJF, priority and round robin and find average waiting time
- Explain critical section, semaphores and classical synchronization problems
- Identify deadlock conditions and apply prevention, avoidance (Banker's algorithm) and detection
- Explain paging, segmentation, virtual memory and page replacement algorithms
- Describe file organisation, directory structures and disk scheduling
Who it is for
- Diploma Computer Science & Engineering students of Semester 4 (BTEUP)
- Diploma IT students and BCA students studying operating systems
- Students preparing for lateral-entry and computer operator exams
What you need
- Basic computer fundamentals and Computer Organisation of Semester 3
Online tests & result
Practice and unit tests online; marks and result show in your student login and at the centre.
Student login →
Questions
Which syllabus is covered?
The BTEUP Diploma Computer Science & Engineering Semester 4 Operating Systems syllabus. Where your college syllabus differs, the centre follows your own syllabus.
Are numericals included?
Yes. CPU scheduling, page replacement, Banker's algorithm and disk scheduling numericals are practised step by step.
Is Linux taught?
Basic Linux commands are shown to explain processes and files; the main focus is the theory needed for the exam.
