Here is a wonderful resource for animated algorithms, especially sorting algorithms.

http://people.cs.pitt.edu/~kirk/cs1501/animations/

Select sorting and view the animations.

Dear students

Read good history and information about open source software here.

http://www.opensourcebc.com/open-source-software/open-source-history
 

See the journey of Ubuntu. It is a robust OS which has better security and safety features for safe data and programs.

Version	Code name	Docs	Release date	End of life date
Ubuntu 11.10	Oneiric Ocelot	Tech / Rel	October 13, 2011	May 9, 2013
Ubuntu 11.04	Natty Narwhal	Tech / Rel	April 28, 2011	October 28, 2012
Ubuntu 10.10	Maverick Meerkat	Tech / Rel	October 10, 2010	April 10, 2012
Ubuntu 10.04	Lucid Lynx (Desktop)	Changes	February 16, 2012	May 9, 2013
Ubuntu 9.10	Karmic Koala	Tech / Rel	October 29, 2009	April 30, 2011
Ubuntu 9.04	Jaunty Jackalope	Tech / Rel	April 23, 2009	October 23, 2010
Ubuntu 8.10	Intrepid Ibex	Rel	October 30, 2008	April 30, 2010
Ubuntu 8.04.4 LTS	Hardy Heron (Server)	Changes	January 28, 2010	May 9, 2013
Ubuntu 8.04.3 LTS	Hardy Heron	Changes	July 16, 2009
Ubuntu 8.04.2 LTS	Hardy Heron	Changes	January 22, 2009
Ubuntu 8.04.1 LTS	Hardy Heron	Hardy Heron	July 3, 2008
Ubuntu 8.04 LTS	Hardy Heron	Hardy HeronRel	April 24, 2008
Ubuntu 8.04	Hardy Heron (Desktop)	Rel	April 24, 2008	May 12, 2011
Ubuntu 7.10	Gutsy Gibbon	Rel	October 18, 2007	April 18th, 2009
Ubuntu 7.04	Feisty Fawn	Rel	April 19, 2007	October 2008
Ubuntu 6.10	Edgy Eft	Rel	October 26, 2006	April 2008
Ubuntu 6.06.2 LTS	Dapper Drake (Server)		January 21, 2008	June 1, 2011
Ubuntu 6.06.1 LTS	Dapper Drake		August 10, 2006
Ubuntu 6.06 LTS	Dapper Drake	Rel	June 1, 2006
Ubuntu 6.06	Dapper Drake (Desktop)	Rel	June 1, 2006	July 14, 2009
Ubuntu 5.10	Breezy Badger	Rel / Rel	October 12, 2005	April 2007
Ubuntu 5.04	Hoary Hedgehog		April 8, 2005	October 2006
Ubuntu 4.10	Warty Warthog		October 26, 2004	April 2006

Network questions

Gaj   Saj   Taj   Raj   1. Kavya industries has set up its new center in Mala Nagar for its web based activities. The company is spread out in four buildings The distances between the various buildings are as Raj to Taj 50m Taj to Saj 60m Saj to Gaj 25 m Raj to Saj 170m Taj to Gaj 125m Raj to Gaj 90m Number of computers in each of the building is as Raj 15 Taj 150 Saj 15 Gaj 25 i) Suggest the cable layout of connections between buildings. ii) Suggest the most suitable place to house the server of this organization with justification. iii) Suggest the placement of the following devices. ·         Switch ·         Repeater iv) What is the economical technology of getting internet for this setup?

Delta   Beta   Alpha   2. Kendriya Knowledge Supplements has set up its new center in Bangalore. It has four buildings Gamma   The distances between the various buildings are as Alpha to Beta 30m Beta to Gamma 70m Gamma to Delta 115m Alpha to Gamma 25m Beta to Delta 20m Alpha to Delta 160 Number of computers in each of the building is as Alpha 35 Beta 80 Gamma 60 Delta 92 i) Suggest the cable layout between these buildings. What topolygy does it form? ii) In each building the management wants that each network segment gets a dedicated bandwidth. Which network device they will use to achieve this? iii) Suggest the most suitable place to house the server with proper justification. iv) The company has connected this Banglore office To Their New Delhi office. Which type of network would this result into?

3. Standard Bank has set up its five new branches in hilly town of Toonpur. A       B   C   D   E     The distances between the various buildings are as A to B 50m B to C 60m C to D 120 m D to E 2 km A to C 90m B to D 100m C to E 3.2km Number of computers in each of the building is as A 55 B 80 C 180 D 70 E 55 i) Suggest the suitable place to house the server with proper justification. ii) Suggest the placement of the following devices with justification. ·         Hub/Switch         ·         Modem iii) Which transmission media should be used to  connect to the head office situated 150km away? iv) What would be ecomonical teachnology to provide internet to all the branches?

4. Narula Constructions are setting up a office campus in Faridabad. They are planning to have three buildings and connect them with head office in Mumbai. Head  office               The distances between the various buildings are as Green to Blue 120m Blue to red 60m Red to Green 65m Head office to Green 910km Head office to Red 900 km Number of computers in each of the building is as Green 51 Red 75 Blue 10 i)Suggest the suitable place to house the server of this organization with proper justification. ii) Suggest the placement of following devices with justification ·         Switch ·         Repeater iii) The Mumbai head office has to connected with a high speed link using wired or wireless connection. Which will be the appropriate media. iv) Suggest the cable layout and topology between the buildings inside the campus.

HOME WORK

1.       What is network?

2.       Give any two advantages of network?

3.       What is internet?

4.       What is interspace?

5.       What is a node?

6.       Explain NIU.

7.       Give any two advantages and two disadvantages

Twisted Pair	Coaxial cable	Optical Fiber	Microwave
Radio wave	Satellite	Infrared	Star topology
Bus topology	Tree topology

8.       What is data channel?

9.       What is baud?

10.   What is bandwidth?

11.   What is LAN, MAN, WAN and PAN? (Explain with the distance criteria)

12.   What is modem? Explain its function.

13.   What is Ethernet?

14.   Explain the functioning of hub and switch.

15.   What is the use of gateway?

16.   Explain circuit switching, message switching and packet switching. Make a table with three columns and give the difference between the three switching techniques.

17.   Explain the following terms in 2-3 sentences

HTTP	FTP	TCP/IP	PPP
SLIP	GSM	SIM	CDMA
WLL	GPRS	1G	2G
3G	Web Page	HTML	XML
SMS	VoIP	WiFi	WiMax
WWW	Telnet	Web browser	Web server
URL	Domain name	Web hosting	Web 2.0
Free Software	Open Source Software	Web scripting	FLOSS
W3C	Client Side Scripting	Server side scripting	Proprietary software
Shareware	Freeware	Cookies	Hacker
Cracker	Firewall	Cyber law	IPR
Virus	Worm	Trojan Horse	Spam
Cloud Computing	Malware

18.   What are the characteristics of cloud computing?

19.   What is public and private cloud?

20.   What are the concerns of security over cloud?