Operating Systems (JCS-401) crash course, Online B.Tech, Semester 4:
Theory-only paper: prepare file allocation methods (asked in B and C), paging vs segmentation, deadlock conditions and threads as 15-mark essays; MCQs cover…
- 6 video lessons
- 1h 45m
- Study notes
- 30 quiz questions
- Assignment
6 lessons in Operating Systems
Each lesson pairs one topic with a hand-picked video, trimmed to the part that teaches it.
About this subject
Theory-only paper: prepare file allocation methods (asked in B and C), paging vs segmentation, deadlock conditions and threads as 15-mark essays; MCQs cover disk scheduling, page replacement, process states and OS types.
- 1
Processes, threads and CPU scheduling
Must study for the exam (×4 · A7, A8, B4, C4 2 + 2 + 5 + 15 marks · MCQ, short note, long explanation).
L-1.5: Process States in Operating System| Schedulers(Long term,Short term,Medium term)· Gate Smashers· 21 min
Study notes 5 quiz questionsWatch lesson - 2
Memory management: paging, segmentation, swapping, page replacement
Must study for the exam (×4 · A3, A4, B2, C2 2 + 2 + 5 + 15 marks · MCQ, short note, long comparison).
L-5.17: Segmentation Vs Paging | Segmentation Working | Operating system· Gate Smashers· 17 min
Study notes 5 quiz questionsWatch lesson - 3
Process synchronization and deadlock
Must study for the exam (×4 · A5, A6, B3, C3 2 + 2 + 5 + 15 marks · MCQ, short note, long explanation).
L-4.1: DEADLOCK concept | Example | Necessary condition | Operating System· Gate Smashers· 12 min
Study notes 5 quiz questionsWatch lesson - 4
File allocation methods (contiguous, linked, indexed)
Must study for the exam (×3 · A2, B1, C1 2 + 5 + 15 marks · MCQ, short note, long comparison).
File Allocation: Contiguous vs Linked vs Indexed – Pros and Cons Explained in Operating Systems | OS· Sundeep Saradhi Kanthety· 26 min
Study notes 5 quiz questionsWatch lesson - 5
OS basics and structure (incl. Android)
High value for the exam (×4 · A9, A10, B5, B6 2 + 2 + 5 + 5 marks · MCQ, short note).
L-1.1: Introduction to Operating System and its Functions with English Subtitles· Gate Smashers· 19 min
Study notes 5 quiz questionsWatch lesson - 6
Disk scheduling
If time permits for the exam (×1 · A1 2 marks · MCQ).
FCFS SSTF SCAN CSCAN LOOK CLOOK Solved Example in Hindi | Disk Scheduling Sums | OS Lectures· Last moment tuitions· 10 min
Study notes 5 quiz questionsWatch lesson
Assignment
Operating Systems Exam Practice Set: Scheduling, Memory, Deadlock, Files and Disks
Less scrolling. More passing.
- Free
Hand-picked video lessons
6 short lessons, each with the best YouTube explanation we could find, trimmed to the part that matters.
- Free login
Study notes
6 lessons come with a summary, key points, key terms and takeaways for quick revision.
- Free login
Quizzes
30 questions across the course, with the right answer and why, the moment you pick.
- Free login
Assignments
1 subject assignments with clear tasks, so you practise what each subject actually asks of you.
- Free login
Notebook
Write notes beside the video, stamped with the exact time, and jump back to that moment later.
- Free login
Progress that follows you
Completed lessons, quiz scores and where you stopped, saved to your account on every device.
- Live chat pass
Live chat
A members-only live chat beside every lesson: doubts, tips, stickers and GIFs with your batch. One ₹19 pass opens every live chat.
The Online B.Tech live chat. Study together, live.
A live chat right beside the video, shared by everyone studying Online B.Tech. Ask a Operating Systems doubt mid-lesson, share a shortcut, celebrate a finished semester.
- Live chat beside every lesson
- One live chat for all of Online B.Tech
- Members-only stickers & GIFs
- One ₹19 pass opens every live chat
Online B.Tech live chat
Anyone else finding Operating Systems tricky? 😅
Lesson 2 cleared it up for me. Watch it before the quiz

Doing it now, thanks!
Starting Environmental Science tonight if anyone wants to go together
More from Online B.Tech Semester 4
All subjects- Sem 4
JNM-401
Environmental Science
Environmental legislation (Water Act 1974, Air Act, EPA 1986, Forest Conservation Act) and climate mechanisms (carbon credits, CDM, carbon footprint) give two…
- 5 lessons
- 52 min
- Notes
- Quiz
- Sem 4CE
Engineering Geology
Minerals and rocks (physical/mechanical properties of minerals, rock strength, sedimentary rock formation) carry 14 of 20 marks; prepare dam and tunnel geology…
- 9 lessons
- 2h 10m
- Notes
- Quiz
- Sem 4CE
JCE-403
Hydraulic Engineering
Pipe-flow losses (minor/major, equivalent pipe, sudden enlargement numerical) and open-channel uniform flow (Chezy C formulas, hydraulic radius) are the most…
- 5 lessons
- 3h 46m
- Notes
- Quiz
- Sem 4CE
JCE-401
Instrumentation & Sensor Technologies for Civil Engineering Applications
Capacitive transducers (CO3: A5, A6, B3 numerical, C3 long) and the Hall effect (CO4: A3, A4, C2 numerical) are the backbone; add smart sensors/encoders (CO5)…
- 6 lessons
- 8h 20m
- Notes
- Quiz
- Sem 4CE
JCE-405
Material Testing & Construction Practices
Concrete dominates (fresh and hardened properties, durability, strength variability, types of concrete) together with mechanical properties of steel; heavy…
- 5 lessons
- 3h 15m
- Notes
- Quiz
- Sem 4CSE
JCS-404
Core Java Technology
Program-writing paper: memorise short Java programs for thread creation (extends Thread / implements Runnable), interface-based multiple inheritance,…
- 5 lessons
- 2h 25m
- Notes
- Quiz
Operating Systems: common questions
Theory-only paper: prepare file allocation methods (asked in B and C), paging vs segmentation, deadlock conditions and threads as 15-mark essays; MCQs cover disk scheduling, page replacement, process states and OS types. It's the Operating Systems subject of Online B.Tech, Semester 4, in 6 lessons: Processes, threads and CPU scheduling; Memory management: paging, segmentation, swapping, page replacement; Process synchronization and deadlock; File allocation methods (contiguous, linked, indexed); OS basics and structure (incl. Android); Disk scheduling.
Yes. Every video lesson is free to watch without an account. A free login unlocks study notes, quizzes, the assignment, a notebook and progress that syncs across devices.
About 1h 45m of video across 6 lessons, plus time for notes and quizzes. Go at your own pace; your place is saved.
Yes: “Operating Systems Exam Practice Set: Scheduling, Memory, Deadlock, Files and Disks”. It comes after the last lesson, with a brief, clear tasks and how the work is judged.
A members-only live chat beside the video, shared by everyone studying Online B.Tech, where learners ask doubts, share tips and react with stickers and GIFs. One ₹19 pass, paid once from your InsideEdge wallet, opens the live chat for every degree.
No. It's a crash course to help you understand and revise the subject quickly. Use it alongside your official study material and assignments.