Course module
Operating System (IT Specialist) — NIACL AO 2026 IT SPECIALIST
- Lessons
- 274
- Duration
- 20 hr 52 min
- PYQs
- 153
- Practice
- 1190
4% of this course's PYQ weight is covered in this module.
Syllabus index
Lessons in this module
Introduction to OS
OS Basics & Goals
OS Types & Evolution
- OS Types & EvolutionPdf
- Batch Operating SystemDrm Video
- SpoolingDrm Video
- Multiprogramming OSDrm Video
- Multitasking OSDrm Video
- multiprocessing operating systemDrm Video
- Types of Multiprocessing Operating SystemDrm Video
- Real Time Operating SystemDrm Video
- Types of Real Time Operating SystemDrm Video
- Distributed Operating SystemDrm Video
OS Structure & Interface
System Calls & Dual Mode
Process Management
Process Basics & PCB
Process State & Lifecycle
Schedulers & Switching
CPU Scheduling
Basics & Criteria
FCFS Scheduling
SJF & SRTF Scheduling
Priority Scheduling
Round Robin Scheduling
LJF & HRRN
Process Synchronization
Intro & Critical Section
Two Process Solutions
Semaphores & Ordering
Classical Problems
Types of Semaphores
Deadlock
Basics & Conditions
Deadlock Prevention
Avoidance & Banker's Algo
Threads & Process Creation
Fork System Call
Memory Management
Basics & Hierarchy
Contiguous Allocation
- Contiguous AllocationPdf
- Contiguous Allocation Policy and Address TranslationDrm Video
- Improvement in Address TranslationDrm Video
- Basics of Space Allocation in Contiguous AllocationDrm Video
- First Fit PolicyDrm Video
- Best Fit PolicyDrm Video
- Worst Fit PolicyDrm Video
- Next Fit PolicyDrm Video
- External FragmentationDrm Video
- Internal FragmentationDrm Video
- Conclusion of External FragmentationDrm Video
Paging & TLB
- Paging & TLBPdf
- Basic of PagingDrm Video
- Understanding Paging FurtherDrm Video
- Logical to Physical Address Translation in PagingDrm Video
- Page Table in PagingDrm Video
- Advantage and Disadvantage of PagingDrm Video
- Address to Memory TranslationDrm Video
- Memory to Address TranslationDrm Video
- Numerical background of PagingDrm Video
- Numerical of Page TableDrm Video
- Understanding Translation Look Aside BufferDrm Video
- Disadvantage of TLBDrm Video
Multilevel Paging
Virtual Memory
Demand Paging Basics
FIFO Page Replacement
Optimal Replacement
LRU Page Replacement
Stack & Counting Algos
Disc Scheduling
FCFS & SSTF Scheduling
SCAN & C-SCAN Algos
LOOK & C-LOOK Algos
File Management
File Allocation Methods
Free Space Management
Directories & Structure
- Directories & StructurePdf
- File Access Methods and their types-Drm Video
- Directory and Disk StructureDrm Video
- Directory StructureDrm Video
- Acyclic Graph DirectoryDrm Video
- General Graph DirectoryDrm Video
- File System MountingDrm Video
- File sharingDrm Video
- File System Structure and Implementation-Drm Video
Storage & RAID Management
Windows OS
Design & Architecture
Core Services & Session
- Core Services & SessionPdf
- Executive - Object ManagerDrm Video
- Executive - Naming ObjectsDrm Video
- Executive -Virtual Memory ManagerDrm Video
- Executive - Process ManagerDrm Video
- Executive - Local Procedure Call FacilityDrm Video
- Executive - I-O ManagerDrm Video
- Executive - Security Reference MonitorDrm Video
- Executive - Plus-and-play-ManagerDrm Video
File & Network Services
- File & Network ServicesPdf
- Environmental Subsystems and File SystemDrm Video
- File System Recovery and SecurityDrm Video
- Volume Management and Fault ToleranceDrm Video
- File System - Compression and Reparse PointDrm Video
- NetworkingDrm Video
- Access to Remote FilesDrm Video
- Networking - DomainsDrm Video
- Name Resolution in TCP-IP NetworkDrm Video
Prog & Memory Interface
Linux OS
Process & Scheduling
File Systems & I/O
Security
Security Fundamentals
Access Control Models
Program & System Threats
Cryptography & Encryption
Authentication & Defenses
Distributed Systems
Distributed System Basic
Network OS Models
Communication & Protocols
Routing & Connectivity
Virtual Machines
VM Fundamentals
Virtualization Techniques
Previous-year questions
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Explore the course
- Quantitative Aptitude
- Reasoning Ability
- English Language
- General Awareness
- C Concepts + MCQs (IT Specialist)
- Java (IT Specialist)
- Python (IT Specialist)
- OOPs (IT Specialist)
- DBMS (IT Specialist)
- SQL (IT Specialist)
- Software Engineering (IT Specialist)
- Data Structure (IT Specialist)
- Compiler Design (IT Specialist)
- Computer Architecture (IT Specialist)
- Data Communication & Networking (IT Specialist)
- Descriptive Test (Main Exam)
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