5.4 WANs

Question 1

WAN

Answer 1

Wide Area Network

A Wide Area Network acts like a single network, but spans across multiple physical locations.

WANs work by using a number of different protocols at the data link layer to transport your data from one site to another. In fact, these same protocols are what are sometimes at work at the core of the Internet itself instead of our more familiar ethernet.

Question 2

LOCAL LOOP

Answer 2

The area between each demarcation point (where the ISPs Network takes over) and the ISP’s actual core network is called a local loop.

Question 3

point to point VPN

Answer 3

A point to point VPN also called a site to site VPN establishes a VPN tunnel between two sites.

The VPN tunneling logic is handled by network devices at either side so that users don’t all have to establish their own connections.