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Cisco revison - Coggle Diagram

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  - - - Message timing is also very important in network communications. Message timing includes the following
        
        Flow Control - This is the process of managing the rate of data transmission. Flow control defines how much information can be sent and the speed at which it can be delivered. For example, if one person speaks too quickly, it may be difficult for the receiver to hear and understand the message. In network communication, there are network protocols used by the source and destination devices to negotiate and manage the flow of information.
        
        Response Timeout - If a person asks a question and does not hear a response within an acceptable amount of time, the person assumes that no answer is coming and reacts accordingly. The person may repeat the question or instead, may go on with the conversation. Hosts on the network use network protocols that specify how long to wait for responses and what action to take if a response timeout occurs.
        
        Access method - This determines when someone can send a message. Click Play in the figure to see an animation of two people talking at the same time, then a "collision of information" occurs, and it is necessary for the two to back off and start again. Likewise, when a device wants to transmit on a wireless LAN, it is necessary for the WLAN network interface card (NIC) to determine whether the wireless medium is available.
  - - - Protocols are used for the automatic dection of devices or services for example the Dynamic host confiquration protocl (DHCP) And DNS
    - - Protocols enable routers to exchange route infromation, compare path information and then slecting the best path for the destiatination protocols, Inlcude Open shorest path first (OSPF) and Border Gateway Protocol (BGP).
    - - Protocols secure data to provide authetication, data integrity as well as data encryption examples of this would be Secure Shell (SSH), Secure Sockets Layer (SSL), and transport Layer security (TLS).
    - - Protocols enable two or more devices to be able to commuicate over one or more networks. The ethernet family of technologies involves a varietry of protocols such as IP, Transmission control potocol (TCP), HyperText transfer Protocol (http), and many more.
  - - - This function ensures that data flows at effencient rates between the two devices. TCP
    - - This function uniquely lables each transmitted segment of data. The receving device uses the sequencing informatiion to reassemble to information correctly this is useful if the data segemnts are lost delayed or recived out-of-order. TCP provides these services.
    - - This function provides guanteed delivery mechanisims in case message are lost or corrputed in transit. TCP provides guanteed delivery.
    - - This function is used to determine if the data became corrupted during transmition with various protocols providing error detection like Ethernet, IPv4 and IPv6 and TCP.
    - - This identfies the intended reciver of the message using a defined addressing scheme exaples are IPv4 and IPv6
    - - This function contains information used for process-to-process communicatioins betweeen network application. For example, when accessing a web page, HTTP or HTTPS protocols are used to commmuinciate between the client and server web processes.