Unit 5

Unit 5

1. Network

   • Group of computers stuck together in some way
   • to share resources and for network management
   • Wan
     • Wide Area Network
       • Internet is a WAN
   • LAN
     • Local Area Network
       • Easier to maintain security
   • Peer to Peer
     • computer connected to each other
     • Cant have backed up Data
     • If one blows up not all data will be lost
   • Client Server
     • All computers connected to a server
     • Can back up server
     • If it blows up all data will be lost
   • Fibre Optic Cables
     • Sharks can eat the cables
     • People can cut wires
     • Wireless internet(WIFI)

2. Network Devices

   • Device: a thing made or adapted for a particular purpose, especially a piece of mechanical or electronic equipment
   • Switch: Connects computers together

3. Network Protocols

   • HTTP
     • Web pages, instrusctions show how a page should be layed out
     • Hyper Text Transfer Protocol
   • HTTPS
     • Same as HTTP but encypted so it is better. used when sending stuff like bank details
     • Http Secure
   • POPS
     • Opening data
   • imap
     • Allows multiple people to access the same email
   • TCP/IP
     • Chop them up into tiny pieces then put them back together in the same stack
   • FTP
     • File Transfer Protocal

4. Tapologies

   • Star
     • Star topology is a network topology where each individual piece of a network is attached to a central node (often called a hub or switch). The attachment of these network pieces to the central component is visually represented in a form similar to a star
   • Ring
     • A ring network is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node - a ring. Data travels from node to node, with each node along the way handling every packet.
   • BUS
     • Bus topology is a specific kind of network topology in which all of the various devices in the network are connected to a single cable or line. In general, the term refers to how various devices are set up in a network.
   • Mesh
     • A mesh network is a network topology in which each node relays data for the network. All mesh nodes cooperate in the distribution of data in the network. ... Wireless mesh networks can be considered a type of Wireless ad hoc network.

5. Network Security

   • Cyber attacks
   • social engineering
     • shoulder surfing
   • unpatched software
   • USB Devices
   • The Cloud
   • Eaves dropping
     • Interception

6. Ethical Hacking

   • Getting paid to hack something

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