OSI Reference Model
- Created by: Christanina
- Created on: 30-11-20 10:46
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- OSI Reference Model
- Physical Layer
- The physical characteristics of cable
- Size of plugs
- Maximum cable
- Can be wireless
- Measures Radio Frequency and Transmission power
- The physical characteristics of cable
- Data Link Layer
- Takes input from Data layer
- Splits bit streams into messages
- Perform Media Access Control
- Assigns addresses to hosts on the link
- Network Layer
- Interconnects multiple links to form a wide area network
- Examples IP, ICMP
- Transport Layer
- Provides end-to-end transfer of data
- Example Protocols include UDP, TCP
- The Transport Layer takes segments as input
- Application Layer
- Takes data as input
- User application protocols
- Not the application programs themselves
- Examples include: HTTP or HTTPS, DNS and FTP
- Session Layer
- Takes data as an input
- Manages the connections created on the transport layer
- Use SMTP to transfer email messages over a TCP/IP connection
- Presentation Layer
- Takes Data as input
- Manages the presentation of data
- Considers Character set or markup languages like HTML and JSON
- Examples SSL, Telnet, HTTP/HTML
- Physical Layer
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