OSI MODEL

It provides a standardized framework for network communication.

It is only used for wireless networks.

It was designed exclusively for the Internet of Things.

It is an outdated model with no current applications.

Mail Services

Directory Services

Encryption/Decryption

Network Virtual Terminal

Session establishment, maintenance, and termination

Segmentation and Reassembly

Dialog Controller

Synchronization

It is a three-phase process including connection establishment.

The receiver acknowledges receipt of each packet.

It allows for faster communication between devices.

It is more reliable than connection-oriented service.

Network layer

Data Link layer

Physical layer

Transport layer

Framing

Physical addressing

Error control

Routing

Application - Application, Presentation - Application, Session - Application, Transport - Transport, Network - Internet, Data Link - Network Access, Physical - Network Access

Application - Transport, Presentation - Internet, Session - Network Access, Transport - Application, Network - Physical, Data Link - Transport, Physical - Internet

Application - Network Access, Presentation - Transport, Session - Internet, Transport - Application, Network - Application, Data Link - Physical, Physical - Data Link

Application - Internet, Presentation - Application, Session - Transport, Transport - Network Access, Network - Physical, Data Link - Application, Physical - Transport

Frames

Packet

Segment

Bits

Network layer; Router, Multilayer Switch, Wireless Router

Transport layer; Layer 4 Firewall

Application layer; Layer 7 Firewall

Data Link layer; Switch, Bridge, NIC