Monday, November 20, 2017

CCNA Step by Step Lesson 3-1 :Wide area network

Wide area network
The term „wide area network“ is used to describe a network that spans multiple geographic locations. Consider an example. A company has two offices, one in London and one in Berlin. Both offices have a LAN. If the company connects these two LANs together using WAN technology, a WAN is created.
The key difference between LANs and WANs is that the company usually doesn’t own WAN infrastructure. A company usually leases WAN services from a service provider.

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CCNA Step by Step Lesson 3-2 : Local area network & Metropolitan area network

Local area network (LAN) The term “local area network” is commonly used to describe a network of devices in a limited area (a house, offi...