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Please visit:
dl.njfiw.gov.cn/books/cisco/CCNP%20PPT/Bcran/BCR1002A.PPT

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Posted by sagitraz

www.blogcatalog.com/blogs/explain-and-select-tasks-required-for-wlan/posts/tag/ccna

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Posted by crouse

Packet-switched WAN services allow you to connect to the provider's network in much the same way as a PC connects to a hub: When connected, your traffic is affected by other customers' and theirs by you. This can be an issue sometimes, but it can be managed. The advantage of this shared-bandwidth technology is that with a single physical connection from your router's serial port (typically), you can establish virtual connections to many other locations around the world. So if you have a lot of branch offices and they are far away from the head office, a packet-switched solution is a good idea. Packet-switched circuits usually use Frame Relay or possibly X.25.

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Posted by lijojhon