1. THE RESOLUTION PROCESS
   1. use symbolic names iin
      1. network
      2. devices connected in network
   2. discover the real address of targeted
      1. machines
      2. services
   3. initiated Resolution Process by either
      1. SERVICE REQUESTOR
         1. request to translate SYMBOLIC address
         2. there must be a dedicated machine
            1. handle the request
      2. SERVICE PROVIDER
         1. done in broadcasting manner
2. ADDRESS
   1. each connection allocates a SEPARATED CONNECTION IDENTIFIER
   2. Connection identifier
      1. have several connection to 1 web servcer
      2. unique connections
   3. Session Identifier
      1. several session in one connection
      2. unique session
3. SEGMENTATION/ REASSEMBLY
   1. MTU
      1. max transmission unit
   2. outgoing messages
      1. divided into PACKETS
         1. match network's MTU
   3. incoming messages
      1. reassembled
      2. SEQUENCING
         1. Indentify segments belong to a subdivided data
         2. error control
         3. End to End flow control
4. DATA DELIVERY CONTROL
   1. Connection Oriented
      1. Connection established before transmission occured
      2. ensure data arrives exactly like it was sent
      3. eg:
         1. HTTP, FTP, SMTP
   2. Connectionless
      1. no connection set up before a transmission occured
      2. Error free data
      3. eg:
         1. DHCP, TFTP, SNMP