Accounting Information Systems 7th Edition by Cynthia Heagy,Constance Lehmann

Exercise 6

The advantage to users of EDI of using a VAN rather than point-to-point communications with trading partners is that:
a. communications and/or EDI programs used by the two trading partners may be different.
b. the times of day that the two trading partners computers are available to send and receive messages may not be the same.
c. there may not be a free port at the receiving partner's computer when the sending partner desires to transmit.
d. all of the above are advantages of using a VAN.