K stands for KDE. U know well what is Ubuntu ;)

1. -
Natty Narwhal (11.04)
Presented By
Nitin Nirmal 26
Indal Pal 28
Hitesh Shetty 50
Mahesh Tawde 58
Mayuresh Wadekar 64

2. Introduction
Kubuntu 11.04
Kernel: Linux Kernel version 3.0
GUI: KDE Plasma Desktop
System Requirment :
Required Recommended
Processor 1 GHz Better than 1 GHz
Memory 384 MB 1 GB
Disk Space 4 GB 10 GB

3. History
1991: Birth of Linux.
1994: Linux 1.0 Only Single-Processor Intel 386 machines.
1996: Linux 2.0 Support for new architectures.
08-April-2005: Release of Kubuntu 5.04.
10-October-2010: Release of Kubuntu 10.10.
28-April-2011: Release of Kubuntu 11.04.

4. Kubuntu 11.04 Desktop

5. Features
Software Center KPackageKit
Web Browser Rekonq
Office Libre Office
Desktop Environment KDE Plasma

6. Uses
Home Use Software Development
Office Use Educational Use

7. Architecture

8. Design principle
 Speed
 Efficiency
 Security
Kernel Module
Features
 Easy to add new functionality.
 Explicitly loading and unloading drivers
 Minimal Kernel
Module support kernel
 Module Management.
 Conflict-resolution mechanism.
 Driver Registration.

9. Process Management
Classes of processes
Interactive Command shells, text editors, and graphical
applications.
Batch Programming language compilers, database
search engines, and scientific computations
Real-time video and sound applications, robot controllers

10. Fork()/Exec() Process Model
fork():For creation of new process.
exec():For execution of newly created process.
Implementation of fork() and exec() system call

11. Memory Management
Linux Memory Management:
 Freeing and allocating physical memory pages.
 Virtual Memory.
Features
 Large Address Spaces.
 Protection.
 Memory Mapping.
 Fair Physical Memory Allocation.
 Shared Virtual Memory.

12. Paging
 A technique used by virtual memory operating systems to help
ensure that the data you need is available as quickly as possible.

13. File Management
Features:
Hiding Implementation of File System.
IPC channel,network devices,I/O devices look like files.
Ext4 file system
Features:
Creating sectors of 1Kb.
Creating logical connectivity.
Reducing disk fragmentation.
Volume handling upto 1 exabyte.

15. Protection And Security
 Authentication
 Access Control
 Linux Security Modules
 Apparmor
 Smack

16. Networking
 Types
Ethernet Dial-Up
Wi-Fi
 ZeroConf Networking

17. Merits
Open Source
Fast and easy Installation
Stability
Performance
Network Friendliness
Flexibility
Multitasking
Security
Open Source
Demerits
Compatibility
Alternative Programs

18. Thank you