Networks

Networks

1. Hardware

   • router
     • is used for all devices connecting to a central point
     • most will have wifi and ethernet connections
   • switch
     • so devices can connect o a central area at a local area network
     • switches can connect to other switches to biild a large local area network.
   • ethernet cable
     • so you can connect your device to a router, switch or computer

2. network types

   • LAN
     • local area network
   • WPAN
   • WAN
     • wide area network
       • network connecting over a large geographical area

3. security

   • firewall
     • controls which programs can receive data packs
     • stops intruders from accessing your computer system.
   • antivirus
     • scans your computer for malware
       • scan all downloads and emails before you open them
   • passwords
     • has to be secure and not easy to guess
       • has to contain numbers, letters and symbols (8 characters long)
   • encryption
     • scrambles data packets using a cipher
       • you need a key to descrypt the data packet
   • phishing
     • data will ask you to click on the link and fill in your details and if you have done that your information will be gone
       • attempting to teal personal information by sending an email making you think they are a real site.

4. connection types

   • WIFI
     • LAN / WAN / WPAN?
     • advantages
       • can connect portable devices to a LAN
     • disadvantages