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1.3 Interpret Reference model of OSI and TCP/IP - Coggle Diagram
1.3 Interpret Reference model of OSI and TCP/IP
Describe the types of rules that
are necessary to successfully
Main elements of data communication systems
Message
- It is the information to be communicated. Popular forms of information include text, pictures, audio, video and etc
Sender
- It is the device which sends the data messages. It can be a computer, workstation, telephone handset and etc.
Receiver
- It is the device which receives the data messages. It can be a computer, workstation, telephone handset etc
Transmission Medium
- It is the physical path by which a message travels from sender to receiver. Some examples include twisted-pair wire, coaxial cable, radio waves and etc
Protoco
l - It is a set of rules that governs the data communications. It represents an agreement between the communicating devices. Without a protocol, two devices may be connected but not communicating
Rule Establishmen
t - Protocols are necessary for effective communication
Explain why protocols are
necessary in network communication
Among the protocols for successful human
communication are:
Appropriate communication mode (spoken, written,
illustrated, interactive or one-way
Common language
Agreed-upon medium or channel (face-to-face,
telephone, letter, photograph)
Grammar and sentence structure
Identification of sender and receiver
Speed and timing of delivery
Network Protocols
The role of protocols
How the message is formatted or structured
The process by which networking devices share information about pathways with other networks
How and when error and system messages are passed between devices
The setup and termination of data transfer sessions
Explain how the TCP/IP model and the OSI model are used to facilitate standardization in the communication process
The Benefits of Using a Layered Model
Assisting in protocol design
Fostering competition
Preventing technology changes in one layer
Providing a common language
7 Layers of OSI
Application
Presentation
Session
Transport
Network
Data Link
Physical
OSI Model and TCP/IP Model Comparison
Similarities
share similar architecture.
share a common application layer
Both models have comparable transport and network layers
Knowledge of both models is required by networking professionals
Differences
Protocol standard
Combines the presentation and session layer issues into its application layer
combines the OSI data link and physical layers into the network access layer
a simpler model
