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To provide learners with an understanding of Wide Area Network (WAN) technologies and the delivery of a wide range of networked services across a WAN infrastructure.
WANs such as the internet have become a part of everyday life with many commercial, educational and governmental organisations having ownership or access to a WAN infrastructure. Many home and small business users broadband/ADSL (Asymmetric Digital Subscriber Line) connections are part of a WAN infrastructure supplied by their Internet Service Provider, where in many cases, the WAN precedes the direct connection to the internet. The impact of a WAN across an organisation includes the up-skilling of staff, changes to the physical environment and changes to commercial procedures. It also requires changes to the access, security and ownership of the data which passes across the WAN. In this unit learners will understand that consideration must be given to not only the physical WAN but the organizational culture as a whole. Learners will understand the importance of considering how WAN devices communicate and ‘learn’ about other devices and the changing topology. They will also explore communication speed and traffic management issues relating to the Quality of Service (QoS) of data delivery.
Reid A – WAN Technologies CCNA 4 Companion Guide (Cisco Press, 2006) ISBN-10: 1587131722