2. UNIX
HARDWARE BASED OS (IBM,HP,SUN)
C AND C++
OPEN SOURCE
LINUX
3. STEAVE JOBS Vs. BILL GATES
WHO IS/WAS THE WINNER?
4. COMPLETE OOPS BASED LANG. (HIGHER LEVEL
LANG.)
WRITE ONCES AND RUN ANYWARE
HTML
PHP
5. WINDOWS 95/96/98
INTERNET GETTING SPACE IN EACH HOUSE
GRAPHIC BASED OS
CHEAP HARDWARE
SEARCH ENGINES
6. Google is a big player
Yahoo decided to Buy three search engines
Microsoft realized Internet is here to stay
– Dominates the browser market
– Realizes search is critical
7. 80% of users use search engines to find sites
16. Master DNS
IP Address Lookup - Forward and Reverse
TTL
Slave DNS
If Master fails or updating
Forward DNS
DOS n D-DOS attach
Forward Query to another server
View DNS