ENVS 1000 Lecture Notes - Lecture 39: Ieee 802.3, Fiber Distributed Data Interface, Frame Relay
10 May 2018
School
Department
Course
Professor
ENVS 1000 Lecture 39 Notes – Types of networks
Introduction
• Every manufactured device that may connect to a network anywhere in the world is
supplied with a permanent, unique MAC address.
• A MAC address is 48 bits in length described as six two-digit hexadecimal numbers
separated by colons.
• For example, the Ethernet adapter for the computer upon which this text is being typed
has MAC address 00:C0:9F:6C:F9:D0.
• The positions of all of the different addresses used in networking.
• There are numerous ways to categorize networks.
• By medium (coaxial cable, wireless, fiber, for example), by protocol group (TCP/IP,
Frame Relay, FDDI, ATM).
• By standard specification number (802.3, 802.11, X.25).
• By usage (Web server, database server, peer-to-peer, storage area network).
• By range of service (Bluetooth, LAN, MAN, WAN) to name a few.
• The most familiar, and often most practical and useful, of these is to categorize
networks by their geographical range of service.
• A common approach is to categorize them hierarchically.
• From smallest range to largest, the major categories are local area networks, backbone
networks, metropolitan area networks, and wide area networks.
• We will also include Internet backbones and the Internet.
• These designations are somewhat arbitrary, and more a matter of style and architecture
than of rigid rule, but they are helpful as a starting point for visualizing and designing
networks.
• We will also mention briefly some special cases
• Virtual local area networks, intranets, extranets, personal area networks (also known as
piconets), and virtual private networks, that do not fit neatly into the standard
categories.
find more resources at oneclass.com
find more resources at oneclass.com
