CompTIA Network+ N10-006Authorized Cert Guide
Chapter 1Computer Network Fundamentals
Foundation Topics
Defining a Network
Networks Defined by: Geography Topology Resource Location
Introducing Computer Networks
What is the purpose of a network?
What are some examples of network components?
How are networks defined by geography?
How are networks defined by topology?
How are networks defined by resource location?
Examples of Networks
What are some examples of how you use networks every day?
File sharing Video chat (Skype, FaceTime) Web surfing Instant messaging Social Media (Facebook, Twitter, Vine, LinkedIn) Voice over IP (VoIP)
Network Components
Icons representing actual equipment:
Router Switch Hub Client Server
Network ComponentsConnect the components together with some media and
you have a network!
Networks Defined by Geography
Geography, in this sense, means how close the components are to each other
PAN: Personal-area network LAN: Local-area network CAN: Campus-area network MAN: Metropolitan-area network WAN: Wide-area network
PAN: Personal-Area Network
Scale: Human
Distance: A few meters
Wired: USB
Wireless: Bluetooth
Components: PCs, headphones, keyboards, smartphones, and so on
LAN: Local-Area NetworkScale: Room or building
Distance: Usually 100 meters or less
Wired: Cat 6 or fiber
Wireless: 802.11
Components: PCs, routers, switches, servers, printers, wireless access points, and so on
CAN: Campus-Area NetworkScale: Cluster of buildings
Distance: Usually a mile or less
Wired: Fiber, coax
Wireless: 802.11, microwave
Components: Routers, switches, wireless bridges, and so on
MAN: Metropolitan-Area Network
Scale: City
Distance: Usually a few miles or less
Wired: Fiber, coax
Wireless: Microwave
Components: Routers, switches, wireless bridges, and so on
WAN: Wide-Area Network
Scale: State, country, global
Distance: A few miles to thousands of miles
Wired: Fiber
Wireless: Microwave
Components: Routers, switches, satellites, and so on
Networks Defined by Topology
Topology, in this sense, means how the components are connected to each other.
Bus Ring Star Hub and spoke Full mesh Partial mesh
Bus Topology
Ring Topology
Star Topology
Hub-and-Spoke Topology
Full-Mesh Topology
Partial-Mesh Topology
Networks Defined by Resource Location
Client/serveroDedicated file serveroShared access to filesoNetworked printersoEasier administration
Peer to peeroFiles shared between PCsoDirectly attached printers (shared)oScalability issues
Client/Server Network
Peer-to-Peer Network
Summary
Various network components Client, server Hub, switch, router Media, WAN link
Different network classifications Geography Topology Resource location