Cisco Chapter 9 Terms

Port Numbers

Numbers that are assigned to the source and destination at Layer 4 to uniquely identify the communication

Conversation Multiplexing

The combining of many different conversations into one data stream

Segment

A block of application data created to facilitate network transport

TCP

A connection-oriented reliable protocol that uses a 3-way handshake

UDP

A connectionless protocol that has little overhead and is used for communication data such as voice and video

Best Effort Delivery

A data delivery method that has no service guarantee

Session

A connection between systems

Connection-Oriented

Used to describe the reliable nature of TCP. The connection refers to the 3-way handshake required in TCP before data transmission.

Flow control

A mechanism that is used with TCP to control the amount of traffic that is sent from the source to the destination

Datagrams

The name of the UDP PDU

Source port

A value between 1024 and 65535 used to uniquely identify the source application or process on a local host

Destination port

A port value that uniquely identifies the destination application

Well-known ports

Port numbers in the range of 1-1024 that identify network applications that are well known such as web, email, and remote login applications

Dynamic ports

Ports that are dynamically assigned to communication sessions as needed and are typically in the numerical range of 1024 to 65535

Netstat

A utility that tracks TCP connections on network hosts