Chapter 2 Vocabulary & Questions

Vocabulary

CSU

DCE

DSU

DTE

E1

Frame Relay

HDLC

ISDN

PPP

PTT

RBOC

T1

Questions

1. A WAN is used to interconnect local-area networks (LANs) that are typically separated by a large geographic area, it operates at the OSI reference model physical and data link layers, and it provides for the exchange of data packets/frames between routers/bridges and the LANs that they support. Draw a WAN that includes three LANs.

2. Name and briefly describe four WAN devices.

3. Name two ways in which WANs differ from LANs.

4. What do the acronyms DTE and DCE stand for?

5. List three WAN physical layer standards.

6. List four WAN data link layer protocols.