Multiple choice Which of the following options is specified by the X.25 packet-switching WAN standard? Synchronization of bits Congestion control Encoding scheme Interface between DTE and DCE Baud rate Reveal answer Fill a bubble to check yourself D Correct answer Explanation X.25 defines a standard protocol for information exchange in packet mode between a DTE and a DCE (that is, between an individual user's equipment and the network provider's equipment).