Networks
- Created by: frankie306
- Created on: 25-04-15 13:46
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- Networks (1)
- LAN
- Local area network
- connects a set of computers and other devices
- installed on one site
- does not cover a wide area
- all owned by organisation who owns the LAN
- WPAN
- Wireless personal area network
- WAN
- Wide area network
- covers a large geographicalarea
- e.g. internet
- VPN
- Virtual private network
- when the internet is used to provide connectivity between nodes
- switches
- reduces traffic
- data is confined to segments needed
- smart device
- connects to different segments of network automatically
- reduces traffic
- routers
- sends data to networks
- works with data packets
- Wireless access points
- pros
- no building work needed
- quick to add new stations
- flexible deployment of node
- visitors allowed access
- cons
- slower performance
- security issues
- pros
- NIC
- Network interface cards
- enable devices to connect with networks
- smartphones
- GSM chips
- Hub
- connects nodes together
- each act as one segment
- cheap
- Protocols
- rules for communication between devices
- encourage network development
- constructed in layers
- IP Addresses
- uniquely identifies the node
- DNS servers convert domain names into IP addressses
- MAC addressing
- Media access control
- Unique number on network interfaces
- communicates physical layer
- Packets
- data is split into these
- Security
- Data is vunerable
- access levels, passwords, encryption
- policies
- protect assets
- LAN
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