Introduction to IP - CompTIA A+ 220-1201 - 2.1

TCP and UDP

- Transported inside of IP

- OSI Layer 4

- Provides multiplexing

Internet Protocol (IP)

The network protocol that deals with the routing of packets through interconnected networks to the final destination

Transmission Control Protocol (TCP)

- Connection-oriented

- Referred to as "Reliable" delivery

- Has a flow control mechanism

User Datagram Protocol (UDP)

- Connectionless

- Referred to as "Unreliable" delivery

- Has no flow control mechanism

DHCP and TFTP (

The connectionless protocols that use UDP are...

HTTPS (Hypertext Transfer Protocol Secure) and SSH (Secure Shell)

The connection-oriented protocols that use TCP are...

Non-ephemeral Ports

- Permanent port numbers

- Ports 0 through 1,023

- Usually on a server or service

Ephemeral Ports

- Temporary port numbers

- Ports 1,024 through 65,535

- Determined in real-time by the client

0 and 65,535

TCP and UDP ports can be any number between:

TCP/80

Web server port number

UDP/5004

VoIP server port number

TCP/143

Email server port number