"யாதும் ஊரே, யாவரும் கேளிர், தீதும் நன்றும் பிறர்தர வாரா, நோதலும் தணிதலும் அவற்றோ ரன்ன". To us all towns are one, all men our kin, Life's good comes not from others' gifts, nor ill, Man's pains and pain's relief are from within.
Friday, April 24, 2009
Software: Tweaking Firefox3
Tweaking some of the above mentioned option in about:config of firefox , increases the overall performance of firefox greatly .
Tuesday, April 21, 2009
Wednesday, April 15, 2009
Tuesday, April 14, 2009
Sunday, April 12, 2009
Software: List of Software
Basic List of Software , that is useful in day to day activities of computer browsing and internet browsing .
Saturday, April 11, 2009
Gmail: Adding Images Inline
Check it out in Gmail Labs Setting .
Friday, April 10, 2009
Software: Tools to remove Conficker virus
1) F-Secure has a free and easy-to-use tool to check for and remove worms; including the dreaded Conficker.
2) McAfee has created a special build of its standalone cleaning tool Stinger which it will be updating daily to include any new Conficker variants.
3) Create a free account (registration required) with Panda Security's ActiveScan to perform an online scan of your machine.
4) Download AVG antivirus free software from http://www.avg.com/free make sure to update your virus definition.
5) Microsoft Update
Wednesday, April 8, 2009
Studies: Network: Different Address Classes
Summary of IP Address Classes
- Class A - 0nnnnnnn hhhhhhhh hhhhhhhh hhhhhhhh
-
- First bit 0; 7 network bits; 24 host bits
- Initial byte: 0 - 127
- 126 Class As exist (0 and 127 are reserved)
- 16,777,214 hosts on each Class A
- First bit 0; 7 network bits; 24 host bits
- Class B - 10nnnnnn nnnnnnnn hhhhhhhh hhhhhhhh
-
- First two bits 10; 14 network bits; 16 host bits
- Initial byte: 128 - 191
- 16,384 Class Bs exist
- 65,532 hosts on each Class B
- First two bits 10; 14 network bits; 16 host bits
- Class C - 110nnnnn nnnnnnnn nnnnnnnn hhhhhhhh
-
- First three bits 110; 21 network bits; 8 host bits
- Initial byte: 192 - 223
- 2,097,152 Class Cs exist
- 254 hosts on each Class C
- First three bits 110; 21 network bits; 8 host bits
- Class D - 1110mmmm mmmmmmmm mmmmmmmm mmmmmmmm
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- First four bits 1110; 28 multicast address bits
- Initial byte: 224 - 247
- Class Ds are multicast addresses - see RFC 1112
- First four bits 1110; 28 multicast address bits
- Class E - 1111rrrr rrrrrrrr rrrrrrrr rrrrrrrr
-
- First four bits 1111; 28 reserved address bits
- Initial byte: 248 - 255
- Reserved for experimental use
- First four bits 1111; 28 reserved address bits