Database Administration Questions

IPv6 - Internet Protocol Version 6.

IPv6 addresses have a size of 128 bits.

Internet Protocol Version 6 [IPv6] is the successor to the Internet's first addressing infrastructure, Internet Protocol version 4 (IPv4).

In contrast to IPv4, which defined an IP address as a 32-bit value, IPv6 address have a size of 128 bits. 

Therefore the answer for What travels around the world but stays in one spot is STAMP or any other thing that acts as a stamp does.

Ex. the letter in the envelope etc...

Since, Several things have the possibility, but the word travel evokes that it would move. 

While eating a watermelon, we all go along the red and stops at green.

The distance around a circle is called as Circumference. And that in the case of square or rectangle it is called as Perimeter.

Alter database backup control file to trace

China has been by far the biggest coal producing country over the last three decades. The country produced about 3.6 billion tonnes (Bt) of coal in 2012 accounting for over 47% of the world's total coal output.

Everyone of us have a blind spot which is a small portion within the visual field of every eye where the optic nerve and blood vessels leave the eyeball. Optic nerve is connected to brain ehich carries images of what we see.