CCNA

Definition:  Reliable transport dictates a connection-oriented session be created to communicate w/ another device.

Advantage:  buffering, windowing, congestion avoidance

Disadvantage: congestion

Keywords:  3-way handshake, not ready, acknowledgement, virtual circuit.  

Definition:  Layer 2 of the OSI reference model.  Provided the physical transmission of data and handles error notification network topology and flow control.

Advantage:  ensures messages are delivered to the proper device.

keywords:  harware address, mac frames, header

Defined:  connection-oriented system delfvered segments are acknowledged, unacknowledged segments are retransmitted, sequencing and manageability

Advantage: avoids congestion, overloading, and data loss

Disadvantage: slow

keywords:  tcp, layer 4, sequencing, segments, transport, Layer 2

Definition :  Layer 4, segments and reassembles data into a data stream.  Can establish a logical connection between hosts

Advantages:  provided more options for app develpers b/c they have a choice of TCP or UDP

KEYWORDS: end-to-end, TCP, UDP, Connetionless, connecion-oriented, segments.

Defined:  Layer 6, Presents data to the application layer and is responsible for data translation and code formatting

advantage: ensures data transferred from one system application layer can be read by another system's application layer

keywords:  translator, coding, ASCII, encryption, compression.

Defined:  Layer 5, responsible for setting up, managing, and tearing down sessions between presentation layer entities. 

Advantage: keeps app data seperate from other app data

keywords:  nodes, simplex, half duplex, full duplex, seperate

Defined:  Layer 7, the spot where users actually communicated to the computer when access to the network will be needed soon

Keywords:  resources, remote, interface, email,