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GROUP 4 - Coggle Diagram

- - - - Some of the LAN examples are connected to each other through a WAN connection. WANs are then connected to each other. The red WAN connection lines represent all the varieties of ways we connect networks. WANs can connect through copper wires, fiber optic cables, and wireless transmissions.
        
        WAN port connects to a high-speed modem, like a DSL or cable modem, which in turn connects the router to the Internet.
  - - - A device as an example a laptop must run a services like a web server software to become a Server. To be a client you need to have access to the webpages by browsing.
- - - - Quality of Service (QoS)
        
        QoS is responsible for the reliable delivery of communications in the network. It also has the responsibility of avoiding congestions in the network. The QoS of a network can be maintained through different algorithms, that can also be used for traffic congestions.
      - Security
        
        Security is a significant factor for a reliable network. Security of a network consists of the main elements, such as confidentiality, integrity, and availability. These three aspects of security define the security policies for the network, and the network is considered secure if the security policies cover all loopholes in the network.
      - Fault Tolerance
        
        The fault tolerance of a network means that it requires having the capability to continue data deliverance in case of any hardware failure. For fault-tolerance network, there need to be backups for the network hardware. The users trust more fault-tolerant networks, which has backups instead of the one with a single hardware and no backup.
      - Scalability
        
        Scalability is an important requirement for reliable networks, as, with the increasing amount of smart devices, every network needs to be scalable, to quickly adopt new devices in the network. There are also various algorithms or structure designs which are used to increase the scalability of a network, such as a tree structure. Scalability is more important in the case of large networks.
- - - - Destination or receiver
        
        It is destination where finally message sent by source has arrived. It is a device that receives message. Same as sender, receiver can also be in form of a computer, telephone mobile, workstation, etc.
      - Channel or media
        
        also called as "Transmission Medium"
        In entire process of data communication, there must be something which could act as a bridge between sender and receiver, Transmission medium plays that part. It is physical path by which data or message travels from sender to receiver. Transmission medium could be guided (with wires) or unguided (without wires), for example, twisted pair cable, fiber optic cable, radio waves, microwaves, etc.
      - Source or sender
        
        To transfer message from source to destination, someone must be there who will play role of a source. Sender plays part of a source in data communication system. It is simple a device that sends data message. The device could be in form of a computer, mobile, telephone, laptop, video camera, or a workstation, etc.
  - - - Essentially, it allows connected devices to communicate with each other, regardless of any differences in their internal processes, structure or design. Network protocols are the reason you can easily communicate with people all over the world, and thus play a critical role in modern digital communications.
- - - - Computer networking refers to interconnected computing devices that can exchange data and share resources with each other. These networked devices use a system of rules, called communications protocols, to transmit information over physical or wireless technologies.
  - - - Networking technologies, such as a WI-FI installed at home, allow families to access the internet from their bedrooms. Through it, they can socialize, do work, and find varieties of shared information all of which are made online.
        
        This simply means that, the existence of networking technologies changes how people live their lives at home. From working at home to online family calls from far away, these technologies are changing the home environment a lot and are still changing it each day.