Its Three.
Which are:
Physical, Data Link and Network Layers
three
The primary disadvantage of X25 is slow speeds.
275 square feet
XOX could mean Hugs and Kisses or X25 over X25 or Xml Object Xml
x25
PAD
The X.25 protocol, adopted as a standard by the Consultative Committee for International Telegraph and Telephone (CCITT), is a commonly-used network protocol. The X.25 protocol allows computers on different public networks (such as CompuServe, Tymnet, or a TCP/IP network) to communicate through an intermediary computer at the network layer level. X.25's protocols correspond closely to the data-link …
it is used for transaction today.
lunn thai ..:p
Tell me more about the number "6"? is that feet or inches?
This information may be found from the link below
250 square feet. Multiply length by width - the result is the area in square feet.