longest-prefix

How to interpret an IP address block?

Hi all, If I have a block of private IP addresses such as 171.58.0.0/12, does this mean that I essentially bitwise AND the 32-bit version of 171.58.0.0 with 32 bits of 1's, the last 12 of which are 0'd out, to get the longest prefix of acceptable private IP addresses in that range? 10101011.00111010.00000000.00000000 (171.58.0.0) AND 1...

Can you use the browser specific prefix in front of all css tags?

Can you use the browser specific prefix in front of all standard tags? e.g. #div{ padding:20px; -moz-padding-bottom:10px; } is the above valid CSS for ensuring Firefox has a different bottom padding to all other browsers? ...