Join Greg Sowell for an in-depth discussion in this video Leased lines, part of Foundations of Networking: Network Media (WANs).
- [Voiceover] Integrated Services for Digital Network,…ISDN, was defined in 1988…as a set of comm standards that cover…parallel digital transmission of data,…voice, and video over the Public Switch Telephone Network.…This means services delivered over standard phone lines.…ISDN being designed for digital transmission…supports channels of 64kb per second.…This magic number was arrived at…due to the sampling rate of analog lines,…which is 8,000 samples per second…and 8b per sample.…
The 64K channels are referred to…as bearer, or B channels.…16K channels are also occasionally used for signaling…and are called data, or D channels.…ISDN is really just various combinations of these channels.…It can utilize channels for voice and data…on a single connection.…The two main access interfaces are…Basic Rate Interface and Primary Rate Interface.…The BRI interface was designed for home use.…
It consists of two B channels at 64K…and one data, or D channel at 16K.…Telcos found that they could reliably send about…160K of information.…
He discusses different WAN technologies and features such as speeds, spans, and price points—including inexpensive options such as VPN. He then covers switches (the devices that connect computers in your building) and routers (devices that control the transmission of network data). Along the way, Greg shows how to build private connections, implement free networking over the Internet, build switch networks, and overlay-routed networks. He'll also introduce different routing protocols, such as OPSF link-state routing and distance-vector routing with RIPv2, EIGRP, and BGP.
Note that this course maps to domains 1 and 2 of the Microsoft Technology Associate (MTA) Networking Fundamentals certification exam (98-366).
- Understanding the technology: from dial-up to VPNs
- Working with hubs, bridges, and switches
- Ensuring hardware redundancy
- Using switching types and MAC tables
- Preventing bridge loops with STP
- Routing with routing tables
- Using NAT
- Securing your switches and routers
- Setting up firewalls
- Working with different routing protocols: RIPv2, OSPF, EIGRP, and more
Skill Level Beginner
Foundations of Networking: Network Media (LANs)with Greg Sowell1h 7m Intermediate
1. WAN Technologies
4. Routing Protocols
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