CCNA Cisco Certified Network Associate Study Guide - FTP Server

The Cisco IOS WAN can support many different WAN protocols
that can help you extend your LANs to other LANs at remote sites. Connecting
company sites together so information can be exchanged is imperative
in this economy. However, it would take a truckload of money to put in your
own cable or connections to connect all of your company’s remote locations.
Service providers allow you to lease or share connections that the service provider
already has installed, which can save money and time.
It is important to understand the different types of WAN support
provided by Cisco. Although this chapter does not cover every type of
Cisco WAN support, it does cover the HDLC, PPP, Frame Relay, and ISDN
protocols.
Wide Area Networks
To understand WAN technologies, you need to understand the different
WAN terms and connection types that can be used to connect your networks
together. This section will discuss the different WAN terms and connection
types typically used by service providers.
Defining WAN Terms
Before you order a WAN service type, it is important to understand the terms
that the service providers use.
Customer premises equipment (CPE) Equipment that is owned and
located at the subscriber’s premises.