FREELive
Operating System
Operating Systems · 50 min
Login to Continue✦ AI-powered learning-to-career ecosystem
Learn. Ask. Code.
Build. Earn. Get Verified.
One platform for computer-science tutorials, AI coding, exams, university papers, competitions, projects, internships, experts and evidence-backed skills.
✦ LEQ ONELearning → Career
“Prepare me for DBMS exam and give me 10 practice questions.”
📚 LearnContextual tutorials
💻 CodeRun C/C++/Java/Python
🏆 CompeteCollege coding contests
₹ Build & EarnSell verified projects
PUBLIC LEARNING
View all subjects →Start learning without creating an account
Browse structured tutorials by subject. Interactive personal tools are added when the student logs in.
A
AI & Machine Learning
LEQ Online learning track for AI & Machine Learning.
Advanced TechC
Cyber Security
LEQ Online learning track for Cyber Security.
Advanced TechA
Android Development
Core CSC
Computer Networks
LEQ Online learning track for Computer Networks.
Core CSD
Data Mining
Core CSD
Data Structures & Algorithms
LEQ Online learning track for Data Structures & Algorithms.
Core CSD
DBMS
LEQ Online learning track for DBMS.
Core CSI
Image Processing
Core CSLEQ SIGNATURE PRODUCTS
Everything connected to one student journey
Learn, practice, prove skill, build real work and move toward internships and jobs.
LEQ AI
Personal learning, viva, interview, code and career assistant.
PDF AI
Upload a PDF and generate summary, notes, quiz and study support.
Code Studio
Run code and use Programming with AI without login.
Competitions
College and LEQ coding contests with result and certificates.
Projects
Build project evidence and submit for verification.
Build & Earn
Sell original projects with Admin-controlled commission.
Internships
Apply, track selection, completion and certificate.
Skill Passport
Evidence-backed learning, coding, projects and certificates.
LEQ ONLINE EXAMS
View All Exams →Free practice without login. Paid & Proctor 360 with login.
Select a subject and start a free standard exam instantly, or log in for paid Normal / Live / Recorded / AI / Hybrid proctored exams.
LATEST TUTORIALS
Continue with structured learning
Operating Systems
Virtual Memory
Virtual Memory is a memory management technique that creates an illusion of a very large main memory by combining physical RAM with secondary storage (like an SSD or hard drive). It allows a computer to execute programs larger than its installed RAM by loading only active chunks of code into memory while temporarily parking idle data on the disk.
Operating SystemsMultiple Partition Allocation
Multiple partition allocation is a contiguous memory management technique where physical memory is divided into multiple sections (partitions), allowing several processes to reside in memory at the same time. Each incoming process is placed into an available partition that meets its size requirement, supporting multiprogramming by enabling the operating system to switch between active tasks.
Operating SystemsSingle-Partition Allocation
Single-partition allocation is the most basic memory management scheme where physical RAM is split into only two sections: one dedicated to the operating system and the other reserved entirely for running a single user program at a time. Because only one process can reside in memory, all remaining space in the user partition is locked to that program until it finishes execution, making it typical of early single-tasking systems like MS-DOS.
Operating SystemsContiguous Allocation
Contiguous allocation is a file allocation technique where an operating system assigns each file a single, unbroken set of consecutive physical blocks on the disk. Because all data blocks reside side by side, reading or writing a file requires minimal disk head movement, making file access exceptionally fast. However, it requires knowing the final file size in advance and frequently leaves unused, fragmented gaps between allocated spaces.
University Previous Year Papers
Filter by university, course, year, semester and subject. Read online in the LEQ viewer.
College / University MoU
Partner institutions can upload question papers and publish learning opportunities after LEQ Admin approval.
Experts & Mentoring
Project review, mock interviews, viva practice, guest sessions and expert hiring under central Admin governance.