Which layer of the TCP/IP stack combines the OSI model physical and data link layers?

A.
Internet layer

B.
transport layer

C.
application layer

D.
network access layer

Explanation:
The Internet Protocol Suite, TCP/IP, is a suite of protocols used for communication over the
internet. The TCP/IP model was created after the OSI 7 layer model for two major reasons. First,
the foundation of the Internet was built using the TCP/IP suite and through the spread of the World
Wide Web and Internet, TCP/IP has been preferred. Second, a project researched by the
Department of Defense (DOD) consisted of creating the TCP/IP protocols. The DOD’s goal was to
bring international standards which could not be met by the OSI model. Since the DOD was the
largest software consumer and they preferred the TCP/IP suite, most vendors used this model
rather then the OSI. Below is a side by side comparison of the TCP/IP and OSI models.
TCP/IP Model
VS.
OSI Model
Application
Layer 7
Application
Layer 6
Presentation

Layer 5
Session
Transport
Layer 4
Transport
Internet
Layer 3
Network
Network Access
Layer 2
Data Link
Layer 1
Physical