Internet

Internet

1. Networks

   • A group of computers connected togeather, to communicate, share resources, and for network management
   • WAN: Wide area network, LAN: Local area network
   • Client Server
     • Computers connected to a server
     • Files cane be re-added / backed up
   • Peer to Peer
     • All computers connected to each other
     • This is more vulnerable
   • Can be wired and wireless

2. Network Devices

   • Network devices are components used to connect computers or other electronic devices together so that they can share files or resources like printers or fax machines. Devices used to setup a Local Area Network (LAN) are the most common type of network devices used by the public
   • Switch
     • A network switch is a computer networking device that connects devices together on a computer network by using packet switching to receive, process, and forward data to the destination device.
   • Router
     • A router is a networking device that forwards data packets between computer networks. Routers perform the traffic directing functions on the Internet. A data packet is typically forwarded from one router to another router through the networks that constitute an internetwork until it reaches its destination node.

3. Protocols

   • HTTP, Hypertext, Transfer protocol
   • Imap: Allows a person to access the same email for example on different divices
   • FTP: File transfer protocol
   • WiFi: how information is transferred through the sky

4. Topologies

5. Security

   • Cyber Attacks
     • example. pop-up that trys to steal your money
     • Spying on people, to steal peoples credentials
   • Unpatched software, non-updated software, people can break in and hack you.
   • Stealing things from a cloud, eg on a server physically getting or hacking into the server

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