Mark works as a Network Administrator for NetTech Inc. He wants to connect the company’s
headquarter and its regional offices using a WAN technology. For this, he uses packet-switched
connection. Which of the following WAN technologies will Mark use to connect the offices? Each
correct answer represents a complete solution. Choose two.
A.
ISDN
B.
X.25
C.
Frame Relay
D.
Leased line