After completing Cisco CCNA: Wide Area Networking, the user should be able to:

	Describe WANs, their devices and interfaces
	Describe the physical layer and data link layer protocols for WANs
	Describe Frame Relay, ISDN, PPP, and X.25 and their positions in the OSI reference model
	Identify the differences between Frame Relay, ISDN, PPP, and X.25

Introduction to WANs

	Defining WAN
	WAN devices
	WAN interfaces
	WAN service providers
	Accessing WAN services with Cisco routers

WAN Protocols

	Setting WAN protocols
	Protocols for the Physical layer
	Protocols for the Data Link layer

PPP

	The advantages of PPP
	Protocols used in PPP
	Data encapsulation
	LCP configuration on CISCO routers
	PPP session establishment
	Ending the PPP session

ISDN

	About ISDN
	Uses for ISDN
	Components of an ISDN network
	Reference points
	Channels
	ISDN services
	ISDN protocols

X.25

	The role of X.25 in WAN
	X.25 network layout
	Virtual circuits
	X.25 protocols

Frame Relay

	Details of Frame Relay
	The Frame Relay network
	Reasons for discarding frames
	LMI protocol
	Data encapsulation
	Frame Relay operation
	Configuring Frame Relay

This course has the following features:

	Exercises that allow users to explore how a course topic applies to WANs
	A file containing the text of the exercises
	Activities that allow users to apply concepts in an interactive questioning environment
	A glossary
	A Skill Assessment

	Knowledge of network administration is helpful but not required
	Cisco CCNA: OSI Reference Model (SCOC01)
	Cisco CCNA: Networks and Data Transfer (SCOC02)
	Cisco CCNA: Local Area Networking (SCOC03)

	Cisco CCNA: Using a Router (SCOC05)
	Cisco CCNA: Introduction to IOS (SCOC06)
	Cisco CCNA: IOS Configuration (SCOC07)
	Cisco CCNA: Network Management (SCOC08)
	Cisco CCNA: Bridges and Switches (SCOC09)
	Cisco CCNA: TCP/IP Networking (SCOC10)
	Cisco CCNA: IP Addressing (SCOC11)
	Cisco CCNA: IP Routing(SCOC12)
	Cisco CCNA: IPX Networking (SCOC13)
	Cisco CCNA: Network Security and Control (SCOC14)
	Cisco CCNA: Additional Configurations (SCOC15)
	Cisco CCNA: Exam Preparation 1 (SCOC16)
	Cisco CCNA: Exam Preparation 2 (SCOC17)
	Cisco CCNA: Numbering Systems (SCOC18)

Cisco and CCNA are trademarks of Cisco Systems, Incorporated.