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NETWORKS (NETWORK DEVICES (Routers (Every computer is connected to…

- - - - Advantages
        
        Allow you to access to lost of information from almost anywhere
        
        Improved communication systems - now you can text, send messages, emails, etc.
        
        changes in the way we shop - many people like to shop online
        
        VoIP(voice over Internet Protocol) - this allow people to do phone calls by internet without having to pay. Permit data to be transferred over internet.
        
        can help people who has disabilities and let them be more independent; by letting them order goods and service orders
      - Disadvantages
        
        Misinformation - there is lots of bogus or fake sites therefore you need to check the information you get carefully or use only reliable sites
        
        Cyber crime - we have to be really careful about revealing
    - - Advantages
        
        Good in school because it can be used to prevent students to access unnecessary information.
        
        Email system is more secure.
        
        Employees can only access to information relevant with their job.
    - - Internet: INTERnational NETwork Intranet: INTernal Restricted Access NETwork.
      - Internet has information about everything. Intranet has information that concerns a particular organisation.
      - Internet can be used by everyone. Intranet is used by employees of determined organisations.
      - Intranet can block sites that are outside the internal network with a proxy server.
      - Intranets is unusual to be hacked because it is behind a firewall.
  - - - Cheaper to build because the organisation owns it.
      - Reduce to a small area
      - Use things which are owned by the organisation.
    - - Advantages
        
        Cheaper because there are less cables.
        
        Its not difficult to link other devices.
      - Disadvantages
        
        Places where the signal is weak.
- - - - Save time - no travelling.
      - Save money - no travelling.
      - Save workers stress.
    - - Not very good image and audio quality.
      - Equipment is expensive.
      - The video might not be synchronised with the audio and you may misunderstand.
    - - Conference call, just talking, no video and talking one person at a time.
    - - You can receive or send files whilst the meeting is happening.
      - You can send messages quickly.
      - Can share the same document with more than one person.
  - - - Advantages
        
        Emails are more private, only the person who receives it can see it whilst fax has to be printed and can be seen by more people.
        
        You can see emails on any device that has access to internet.
      - Disadvantages
        
        Fax can be signed and is legal but emails no.
        
        Emails can be used to distribute viruses.
    - - Electronic vs Physical faxing
        
        More than one fax can be received and sent at the same time.
        
        Don´t have to pay for the cost of a phone call to send a fax.
        
        No additional phone line needed for electronic faxing.
  - - - People say things that then they are not able to say at someone´s person.
      - You can access pages which gives instructions to make drugs...
      - Easy for small children to access pornography.
    - - People can look and research what they want.
      - Different countries has different polices.
      - Everyone is free to say what they want to without being deleted.