Please enable JavaScript.

Coggle requires JavaScript to display documents.

CHAPTER 4 - Coggle Diagram

- - - - Tracks each individual conversation flowing between a source and a destination application
    - - Divides the data into segments that are easier to manage and transport. Header used for reassembly is used for tracking
    - - Ensures that even with multiple applications running on a device, all applications receive the correct data via port numbers
  - - - Required
        
        -Reliable
        
        -Acknowledges data
        
        -Resends lost data
        
        -Delivers data in sequenced
    - - Required
        
        -Fast
        
        -Low overhead
        
        -Does not require acknowledgements
        
        -Does not resend lost data
        
        -Delivers data as it arrives
    - - TCP is connection-based protocol
      - UDP is connectionless
  - - - Establishing a session
        
        connection-oriented protocol
        
        ensures the application is ready to receive the data
        
        negotiate the amount of traffic that can be forwarded at a given time
      - Reliable delivery
        
        ensuring that each segment that the source sends arrives at the destination
      - Same order delivery
        
        numbering and sequencing the segments guarantees reassembly into the proper order
      - Flow control
        
        regulate the amount of data the source transmits
    - - data is reconstructed in the order that it is received
      - any segments lost are not resent
      - no session establishment
      - does not inform the sender about resource availability
  - - - FTP
      - HTTP
      - SMTP
      - Telnet
      - IP
    - - IP
      - DHCP
      - DNS
      - SNMP
      - TFTP
      - VolP
      - IPTV
- - - - When a web address or uniformresource locator (URL) is typedintoaweb browser, the webbrowserestablishes a connectiontothewebservice running on theserver, usingthe HTTP protocol.
    - - FTP requires two connections between the client and the server, one for commands and replies, the other for the actual file transfer
    - - Domain names convert the numeric address into a simple, recognizable name. The DNS protocol defines an automated service that matches resource names with the required numeric network address.
    - - SMTP is used to send email
    - - POP is used to retrieve email from mail server. Email is downloaded from the server to the client and then deleted on the server
    - - IMAP is used to retrieve mail from a mail server. Copies of messages are downloaded from the server to the client and the original messages are stored on the server.
    - - The Dynamic Host Configuration Protocol (DHCP) for IPv4 automates the assignment of IPv4 addresses, subnet masks, gateways and other parameters
      - DHCP for IPv6 provides similar services for IPv6 clients.