1.1 Protocol Types

Pregunta	Respuesta
Internet Control Message Protocol (ICMP)	- Works at the Network layer - ICMP provides diagnostics and Destination Unreachable messages.
User Datagram Protocol (UDP)	- Works at the OSI Transport layer - A connectionless TCP/IP protocol - does not require a connection to send a packet or guarantee that the packet arrives at its destination. - The protocol is commonly used for broadcasting to multiple nodes on a network or the Internet.
Transmission Control Protocol (TCP)	- Works at the OSI Transport layer. - Establishes a session or connection between parties and guarantees packet delivery.
Internet Protocol (IP)	- IPv4 - A group of TCP/IP standards that uses IP addresses that have 32 bits. - IPv6 - A group of TCP/IP standards that uses IP addresses that have 128 bits.
Transmission Control Protocol / Internet Protocol (TCP/IP)	- The group or suite of protocols used for almost all networks, including the Internet. - TCP is responsible for errorchecking transmissions - IP is responsible for routing.

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