Skip to content

Padhai By Astra Cloud

Tribhuvan University
BSc CSIT1 2 3 4 5 6 7 8
BCA1 2 3 4 5 6 7 8
BIT1 2 3 4 5 6 7 8
BIM1 2 3 4 5 6 7 8
BBA1 2 3 4 5 6 7 8
BBS1 2 3 4
Pokhara University
BE Computer (PU)1 2 3 4 5 6 7 8
BBA (PU)1 2 3 4 5 6 7 8
National Examinations Board (+2)
+2 Science1 2
+2 Management1 2
Every subject’s units and teaching hours.
TU
- BSc CSIT
- BCA
- BIT
- BIM
- BBA
- BBS
PU
- BE Computer (PU)
- BBA (PU)
NEB
- +2 Science
- +2 Management
Chapter notes, unit by unit.
TU
- BSc CSIT
- BCA
- BIT
- BIM
- BBA
- BBS
PU
- BE Computer (PU)
- BBA (PU)
NEB
- +2 Science
- +2 Management
Past board questions with worked answers.
TU
- BSc CSIT
- BCA
- BIT
- BIM
- BBA
- BBS
PU
- BE Computer (PU)
- BBA (PU)
NEB
- +2 Science
- +2 Management
Answer, check and learn why.
TU
- BSc CSIT
- BCA
- BIT
- BIM
- BBA
- BBS
PU
- BE Computer (PU)
- BBA (PU)
NEB
- +2 Science
- +2 Management
Notices
- GPA calculatorTU, PU and NEB grade points
- SearchEvery note and question

CACS251 Operating System

Operating SystemTU Board 2025

What are authentication and authorization? Explain different authentication systems.

5

A worked answer is on its wayMeanwhile, read the Operating System notes for this topic.

Discussion

Loading…

More Operating System questions

What is a monolithic kernel? How is it different from microkernel? Explain. [1+4]TU Board 20265 What is multithreading? Explain different types of threads. [1+4]TU Board 20265 Explain the different process states in detail. [5]TU Board 20265 What are the necessary conditions for the deadlock? How deadlock is different from starvation? [4+1]TU Board 20265 What is segmentation? How can it be used for the memory management? [1+4]TU Board 20265 What are different page replacement algorithms? Explain. [5]TU Board 20265

All Operating System old questions