July 26, 2017
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SemSim.com provides training resources for Cisco certification exams: CCIE, CCNP, CCNA, CCDP, CCDA. It offers FREE learning resources to students such as study guides and router simulation labs at it's online learning center located at: http://www.semsim.com/ccna/learn.html http://www.SemSim.com : Making Cisco cetification easy!

The Cisco Three-Layered Hierarchical Model

May 24, 2004 SemSim.com

Cisco has defined a hierarchical model known as the hierarchical internetworking model. This model simplifies the task of building a reliable, scalable, and less expensive hierarchical internetwork because rather than focusing on packet construction, it focuses on the three functional areas, or layers, of your network: […]

Cabling Cisco Devices

May 24, 2004 SemSim.com

Unshielded Twisted Pair (UTP) is a cable that has four pairs of wires twisted inside it to eliminate electrical interference. UTP cables are connected using RJ-45 connectors that have eight connector pins. The data equipment that is used for internetworking is classified as Data Terminal Equipment (DTE e.g. router interfaces) and Data Communication Equipment (DCE e.g. A WAN connects DTEs through DCE network). […]

Selecting Cisco Products

May 24, 2004 SemSim.com

You must understand the business requirements of the network before buying a product. Based on the requirements, you can select the appropriate Cisco products. […]