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Chapter 1 - Intro to Networks
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Network + Mapa Mental sobre Chapter 1 - Intro to Networks, creado por ehmartinson el 26/11/2013.
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Chapter 1 - Intro to Networks
Network?
two or more connected computers that can share resources
Local Area Network (LAN)?
Usually restricted to spanning a particular geographic location. e.g. Office Building, Signel Dept., Corporate office.
Workgroups?
Big LAN's can be split into small logical zones.
Arrange LAN workgroups along department divisions. e.g. Sales, Marketing, Accounting.
Used to connect a group of hosts together
Wide Area Network (WAN)?
Span large geographic locations and employ both routers and public links.
Used to connect various LAN's together.
MPLS - MultiProtocol Label Switching
Pros: Physical layout flexibility, Prioritizing of data, one to many connection.
Switching mechanism that imposes lables to data and then uses those lables to forward the data.
Peer to Peer
No central authority, all peers so when it comes to authority they're all equals. They can be client and servers at the same time.
Client Server
Single server uses a network operating system to manage the whole network. A server handles security and directs clients to the resources it wants.
Common Network Components
Workstations
Powerful computers, resources are available to there users on the network
Servers
Powerful computers that run specialized software for the network's maintenance and control.
Hosts
Broad term that can be used to describe almost any type of networking device. A network device, including workstations and servers, with IP addresses.
Network Topologies
Physical
Gives you the lay of the land
Logical
Shows how the digital signal navigates the layout.
Bus
2 terminated ends, with each of its computer connecting to one unbroken cable running its entire lenth
Pros: Easy to install, inexpensive. Cons: Hard to troubleshoot, change, or move, and no fault tolerance.
Star
Computers are connected to a central point (Hub, Switch, Access Point).
Pros: Fault Tolerance, Scaleable, easy to troubleshoot Cons: Installation costs, Single point of failure (Hub, Switch, Access Point)
Ring
Each Computer is connected directly to other computers in the same network.
Pros and Cons same as Bus but it is pricier that Bus.
Mesh
There is a path from every machine to every other machine. Not usually found in LAN's
Pros: Fault tolerance Cons: Pricey, Complicated
Point-to-Point
Direct connection between two devices creating 1 communication path. From one router to another router.
Point-to-Multipoint
Succession of connections between an interface and multiple destination interfaces. One router to multiple routers.
Hybrid
A combination of two or more types of physical or logical network topologies working together within the same network.
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