Tugas ICT Untuk Bisnis 5: Communications and Networks

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Nama   :  Akhirul Annas
NIM    :  1502144233
Kelas   :  KM-38-01

 * COMMUNICATIONS
Computer communications describes a process in  which two or more computers or devices transfer  data, instructions, and information.

Sending device -> 
Communications  channel -> 
Receiving device







communications systems

Uses of Computer Communication :

Blogs     Chat rooms                     E-mail            Fax


FTP       Instant messaging           Internet          Newsgroups


RSS       Video conferencing        VoIP               Web


           Web 2.0          Web folders         Wikis








1. Text messaging (SMS) allows users to send and receive short 
    text messages on a phone or other mobile device or computer.
2. Picture messaging allows users to send pictures and sound files.

3. Video messaging allows users to send short video clips.
4. Wireless instant messaging allows wireless users to exchange 
     real‐time messages with one or more other users.

  • Wireless Internet access points allow people to connect  wirelessly to the Internet from home, work, school, and  in many public locations.
      • A cybercafé is a coffeehouse, restaurant, or other  location that provides personal computers with  Internet access to its customers.




  • A global positioning system(GPS) is a navigation system  that consists of one or more earth‐based receivers that  accept and analyze signals sent by satellites in order to  determine the GPS receiver’s geographic location.
  • GPS receivers are:
    Built into  many mobile  devices
      Available as a  handheld  device
        Available with  new vehicles


        • Many programs provide a means to collaborate, or work  online, with other users connected to a server.
        • Collaboration software includes tools that enable users to  share documents via online meetings and communicate  with other connected users.
        Online  meetings
          Web  conferences
            Document  management  systems


            • Web services enable  programmers to create  applications that  communicate with other  remote computers over  the Internet or on an  internal business network.
            • A mashupis a Web  application that combines  services from two or  more sources.


            * NETWORKS

            • A networkis a collection of computers and  devices connected together via communications  devices and transmission media
            • Advantages of a network include:
            Facilitating  communications
            Sharing  hardware
            Sharing data  and information
            Sharing  software
            Transferring  funds
            • A local area network (LAN) is a network that  connects computers  and devices in a limited  geographical area.
            • A wireless LAN (WLAN)  is a LAN that uses no  physical wires.
            • A metropolitan area network (MAN) connects LANs in a metropolitan area.
            • A wide area network (WAN)  is a network that covers a  large geographical area.
            •  A wide topology refers to the layout of the computers and devices in a communication network.