I'm in my Cisco class this morning. We have a lab that we will be doing. We are going to make cables today.
Packets frames and bytes.
Packets use IP addresses.
Packet header contains source and destination addresses.
MAC 48 bits vendor and device.
Layer 6 Presentation codes converts application data, compression and encryption.
Algorithim- http://en.wikipedia.org/wiki/Algorithim
Layer 5 session layer create maintain and tear down.
SMTP-simple mail transfer protocol.
FTP- file transfer protocol.
Go over port numbers.
Client Server processes are in the app layer. Describes the process and controls the info asking for authentication and identifying a file.
Peers do the authentication not the server.
DNS is a client/server.
Data - The general term for the PDU used at the Application layer
Segment - Transport Layer PDU
Packet - Internetwork Layer PDU
Frame - Network Access Layer PDU
Bits - A PDU used when physically transmitting data over the medium
