Uploaded July 2026 | Updated September 2026, 2 weeks ago
🔹Notes: gatesmashers.com/resources/operating-system-interview-questions
0:00 Q-1: What is an Operating System, and What Are Its Main Responsibilities?
2:26 Q-2: What is the Difference Between User Mode and Kernel Mode?
4:15 Q-3: What is a System Call, and What Happens When One is Executed?
5:15 Q-4: What is the Difference Between a Program and a Process?
6:26 Q-5: What is the Difference Between a Process and a Thread?
8:13 Q-6: What Are the Common States of a Process?
9:50 Q-7: What is a Process Control Block (PCB)?
11:13 Q-8: What is a Context Switch, and Why is It Considered Overhead?
12:40 Q-9: Preemptive vs Non-Preemptive Scheduling
14:05 Q-10: What is the Difference Between fork() and exec()?
15:51 Q-11: What Are Zombie and Orphan Processes?
17:38 Q-12: What is the Difference Between Concurrency and Parallelism?
18:37 Q-13: What is a Race Condition, and What is a Critical Section?
20:18 Q-14: Mutex vs Semaphore
22:14 Q-15: What is Deadlock, and What Four Conditions Are Required for It?
24:35 Q-16: How Can an Operating System Handle Deadlocks?
25:14 Q-17: Deadlock vs Starvation vs Livelock
28:02 Q-18: What is Inter-Process Communication (IPC)?
29:18 Q-19: Paging vs Segmentation
30:27 Q-20: What is Virtual Memory, and What is Demand Paging?
32:11 Q-21: What is a TLB, and Why is It Important?
34:11 Q-22: What is a Page Fault, and How Does the OS Handle It?
35:32 Q-23: Page Replacement Algorithms and Belady's Anomaly
38:03 Q-24: What is Thrashing, and How Can It Be Controlled?
39:25 Q-25: What Happens Inside the OS When a Program Opens and Reads a File?
41:25 Q-26: What is Fragmentation? Internal vs External Fragmentation
43:53 Q-27: What Are the Main Types of Kernels?
44:36 Q-28: Multiprogramming vs Multitasking vs Multiprocessing
45:44 Q-29: Interrupt vs Exception
47:36 Q-30: What is Copy-on-Write, and Why is It Useful?
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► Placement Interview Questions: youtube.com/playlist?list=PLUDPUBNI7KL4
► System Design: youtube.com/playlist?list=PLxCzCOWd7aiHanm1nA5_fMwbx5dCNFkDX
► Deep Learning: youtube.com/playlist?list=PLxCzCOWd7aiHQ9Qyo70JCTkTxczPnVC6s
► Machine Learning:
youtube.com/playlist?list=PLxCzCOWd7aiEXg5BV10k9THtjnS48yI-T&si=qPGIoiBrziIFs6CJ
► Design and Analysis of Algorithms (DAA): youtube.com/playlist?list=PLxCzCOWd7aiHcmS4i14bI0VrMbZTUvlTa
► Software Engineering: youtube.com/playlist?list=PLxCzCOWd7aiEed7SKZBnC6ypFDWYLRvB2
► Database Management System (DBMS): youtube.com/playlist?list=PLxCzCOWd7aiFAN6I8CuViBuCdJgiOkT2Y
► Cloud Computing: youtube.com/playlist?list=PLxCzCOWd7aiHRHVUtR-O52MsrdUSrzuy4
► Theory of Computation (TOC): youtube.com/playlist?list=PLxCzCOWd7aiFM9Lj5G9G_76adtyb4ef7i
► Artificial Intelligence: youtube.com/playlist?list=PLxCzCOWd7aiHGhOHV-nwb0HR5US5GFKFI
► Computer Networks (CN): youtube.com/playlist?list=PLxCzCOWd7aiGFBD2-2joCpWOLUrDLvVV_
► Operating System (OS): youtube.com/playlist?list=PLxCzCOWd7aiGz9donHRrE9I3Mwn6XdP8p
► Structured Query Language (SQL): youtube.com/playlist?list=PLxCzCOWd7aiHqU4HKL7-SITyuSIcD93id
► Discrete Mathematics: youtube.com/playlist?list=PLxCzCOWd7aiH2wwES9vPWsEL6ipTaUSl3
► Compiler Design: youtube.com/playlist?list=PLxCzCOWd7aiEKtKSIHYusizkESC42diyc
► Number System: youtube.com/playlist?list=PLxCzCOWd7aiFOet6KEEqDff1aXEGLdUzn
► Programming in C: youtube.com/playlist?list=PLxCzCOWd7aiGmiGl_DOuRMJYG8tOVuapB
► Data Structures: youtube.com/playlist?list=PLxCzCOWd7aiEwaANNt3OqJPVIxwp2ebiT
► Computer Architecture: youtube.com/playlist?list=PLxCzCOWd7aiHMonh3G6QNKq53C6oNXGrX
► Graph Theory: youtube.com/playlist?list=PLxCzCOWd7aiG0M5FqjyoqB20Edk0tyzVt
► Digital Logic: youtube.com/playlist?list=PLxCzCOWd7aiGmXg4NoX6R31AsC5LeCPHe
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#operatingsystem #oneshot #interview #viral
🔹Notes: gatesmashers.com/resources/operating-system-interview-questions
0:00 Q-1: What is an Operating System, and What Are Its Main Responsibilities?
2:26 Q-2: What is the Difference Between User Mode and Kernel Mode?
4:15 Q-3: What is a System Call, and What Happens When One is Executed?
5:15 Q-4: What is the Difference Between a Program and a Process?
6:26 Q-5: What is the Difference Between a Process and a Thread?
8:13 Q-6: What Are the Common States of a Process?
9:50 Q-7: What is a Process Control Block (PCB)?
11:13 Q-8: What is a Context Switch, and Why is It Considered Overhead?
12:40 Q-9: Preemptive vs Non-Preemptive Scheduling
14:05 Q-10: What is the Difference Between fork() and exec()?
15:51 Q-11: What Are Zombie and Orphan Processes?
17:38 Q-12: What is the Difference Between Concurrency and Parallelism?
18:37 Q-13: What is a Race Condition, and What is a Critical Section?
20:18 Q-14: Mutex vs Semaphore
22:14 Q-15: What is Deadlock, and What Four Conditions Are Required for It?
24:35 Q-16: How Can an Operating System Handle Deadlocks?
25:14 Q-17: Deadlock vs Starvation vs Livelock
28:02 Q-18: What is Inter-Process Communication (IPC)?
29:18 Q-19: Paging vs Segmentation
30:27 Q-20: What is Virtual Memory, and What is Demand Paging?
32:11 Q-21: What is a TLB, and Why is It Important?
34:11 Q-22: What is a Page Fault, and How Does the OS Handle It?
35:32 Q-23: Page Replacement Algorithms and Belady's Anomaly
38:03 Q-24: What is Thrashing, and How Can It Be Controlled?
39:25 Q-25: What Happens Inside the OS When a Program Opens and Reads a File?
41:25 Q-26: What is Fragmentation? Internal vs External Fragmentation
43:53 Q-27: What Are the Main Types of Kernels?
44:36 Q-28: Multiprogramming vs Multitasking vs Multiprocessing
45:44 Q-29: Interrupt vs Exception
47:36 Q-30: What is Copy-on-Write, and Why is It Useful?
🚀 MASTER COMPUTER SCIENCE | INTERVIEWS | EXAMS
Gate Smashers — Learn Computer Science through free lectures, structured playlists, interview resources, important questions, notes & exam preparation. 💻📚
🌐 FREE CS RESOURCES & INTERVIEW PREPARATION : gatesmashers.com
━━━━━━━━━━━━━━━━━━━━━━
📚 SUBJECT-WISE COMPUTER SCIENCE PLAYLISTS
► Placement Interview Questions: youtube.com/playlist?list=PLUDPUBNI7KL4
► System Design: youtube.com/playlist?list=PLxCzCOWd7aiHanm1nA5_fMwbx5dCNFkDX
► Deep Learning: youtube.com/playlist?list=PLxCzCOWd7aiHQ9Qyo70JCTkTxczPnVC6s
► Machine Learning:
youtube.com/playlist?list=PLxCzCOWd7aiEXg5BV10k9THtjnS48yI-T&si=qPGIoiBrziIFs6CJ
► Design and Analysis of Algorithms (DAA): youtube.com/playlist?list=PLxCzCOWd7aiHcmS4i14bI0VrMbZTUvlTa
► Software Engineering: youtube.com/playlist?list=PLxCzCOWd7aiEed7SKZBnC6ypFDWYLRvB2
► Database Management System (DBMS): youtube.com/playlist?list=PLxCzCOWd7aiFAN6I8CuViBuCdJgiOkT2Y
► Cloud Computing: youtube.com/playlist?list=PLxCzCOWd7aiHRHVUtR-O52MsrdUSrzuy4
► Theory of Computation (TOC): youtube.com/playlist?list=PLxCzCOWd7aiFM9Lj5G9G_76adtyb4ef7i
► Artificial Intelligence: youtube.com/playlist?list=PLxCzCOWd7aiHGhOHV-nwb0HR5US5GFKFI
► Computer Networks (CN): youtube.com/playlist?list=PLxCzCOWd7aiGFBD2-2joCpWOLUrDLvVV_
► Operating System (OS): youtube.com/playlist?list=PLxCzCOWd7aiGz9donHRrE9I3Mwn6XdP8p
► Structured Query Language (SQL): youtube.com/playlist?list=PLxCzCOWd7aiHqU4HKL7-SITyuSIcD93id
► Discrete Mathematics: youtube.com/playlist?list=PLxCzCOWd7aiH2wwES9vPWsEL6ipTaUSl3
► Compiler Design: youtube.com/playlist?list=PLxCzCOWd7aiEKtKSIHYusizkESC42diyc
► Number System: youtube.com/playlist?list=PLxCzCOWd7aiFOet6KEEqDff1aXEGLdUzn
► Programming in C: youtube.com/playlist?list=PLxCzCOWd7aiGmiGl_DOuRMJYG8tOVuapB
► Data Structures: youtube.com/playlist?list=PLxCzCOWd7aiEwaANNt3OqJPVIxwp2ebiT
► Computer Architecture: youtube.com/playlist?list=PLxCzCOWd7aiHMonh3G6QNKq53C6oNXGrX
► Graph Theory: youtube.com/playlist?list=PLxCzCOWd7aiG0M5FqjyoqB20Edk0tyzVt
► Digital Logic: youtube.com/playlist?list=PLxCzCOWd7aiGmXg4NoX6R31AsC5LeCPHe
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🌐 CONNECT WITH GATE SMASHERS
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► Facebook: facebook.com/gatesmashers
► Threads: threads.net/@gate.smashers
GsetGo
► YouTube: youtube.com/@GSetgoofficial
► Instagram: instagram.com/gsetgo_
VarunNainaShots
► YouTube: youtube.com/@varunainashots
► Instagram: instagram.com/varunainashots
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Subscribe to Gate Smashers and start your Computer Science learning journey today! 🚀💻
#operatingsystem #oneshot #interview #viral
