# Answers

Which model was introduced first, OSI or TCP/IP?

TCP/IP

Which layer of the TCP/IP model covers the functionality of the Transport layer of the OSI model **(Full Name)**?\
Transport

Which layer of the TCP/IP model covers the functionality of the Session layer of the OSI model **(Full Name)**?\
Application

The Network Interface layer of the TCP/IP model covers the functionality of two layers in the OSI model. These layers are Data Link, and?.. **(Full Name)**?\
Physical

Which layer of the TCP/IP model handles the functionality of the OSI network layer?\
Internet

What kind of protocol is TCP?\
Connection-based

What is SYN short for?\
Synchronise

What is the second step of the three way handshake?

SYN/ACK

What is the short name for the "Acknowledgement" segment in the three-way handshake?

ACK