Internet

Internet

1. network

   • communication
   • sharing of resources
   • centrally stored resourses
   • network management
   • LAN(Local Area Network)
   • WAN(Wide Area Network)
   • Client-server
     • files are stored centrally , so easier to manage
   • peer to peer
     • connecting many computers together and no one yet everyone is the main server

2. connections

   • NIC(Network Interface Card)
   • wired(Ethernet, copper cable, fiber optic)
   • wireless(Wi-Fi, 4G)

3. Network Devices

   • Device
   • 4G 3G Tower
   • Switch
   • Cellular Device
   • Router
   • WAP
   • Ethernet Cable
   • NIC

4. protocols

   • the way data is sent
   • HTTP
     • Language of the WWW
   • HTTPS
     • encrypts data that is sent across internet
   • POP3
     • post office protocol version 3
   • SMTP
     • simple mail transfer
   • IMAP
     • internal message access protocol
   • FTP
     • File transfer protocol
   • TCP/IP
     • Transfer control protocol and internet protocol
   • Ethernet
     • control how data is transmitted wired
   • WI-Fi
     • control how data is transmitted wirelessly on a local area network

5. Topologie

   • Star
   • Ring
   • Bus
   • Mesh

6. Network Security

   • cyberattacks
   • social engineering (phishing, shoulder surfing)
   • unpatched sofware
   • USB devices
   • Eavesdropping
   • the cloud

7. ethical hacking

   • looking for a way to hack the system to improve the system

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