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INTERPRET REFERENCE MODEL OF OSI AND TCP/IP - Coggle Diagram
INTERPRET REFERENCE MODEL OF OSI AND TCP/IP
NECESSARY RULES TO SUCCESSFULLY COMMUNICATE
Rule Establishment
why is it necessary?
Common language and grammar
Speed and timing of delivery
An identified sender and receiver
Confirmation or acknowledgment requirements
Protocols
Message delivery options
Message Formatting and Encapsulation
Message Timing
Message Size
Message encoding
COMMUNICATION FUNDAMENTALS
Relationship between 5 components
3.medium
physical path by which a message travels from
sender to receiver
message
information to be communicated
2.receiver
device which receives the data messages
5.protocol
set of rules that governs the data communications
transmitter
sends the data messages.
Communication methods
Source (Sender)
Destination (Receiver)
Channel (Media)
WHY PROTOCOLS ARE NECESSARY IN NETWORK COMMUNICATION
network protocols
common format and set of
rules for exchanging messages
between devices.
role of protocols
exchanging messages
between devices.
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
Protocol Interaction
IP
encapsulates the TCP segments
into packets, assigns addresses, and
delivers to the destination host.
Ethernet
allows communication over
a data link and the physical
transmission of data on the network
media.
TCP
transport protocol that manages
the individual conversations.
HTTP
an application protocol that
governs the way a web server and a
web client interact.
protocols for successful human
communication
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
SUMMARY
A network is a system, or collection of systems, that facilitates the exchange of resources from one point to another. This is a fancy way of saying that a network is the sum of the parts connecting two or more points. Examples of networks include the subway, the highway system, the telephone system, and the Internet.
HOW THE TCP/IP MODEL AND THE OSI MODEL ARE USED TO FACILITATE STANDARDIZATION IN THE COMMUNICATION PROCESS
Benefits of using layered model
Assisting in protocol design
since protocols at each layer
have defined functions.
Fostering competition because
products from different
vendors can work together.
Preventing technology changes
in one layer from affecting
other layers.
Providing a common language
to describe networking
functions and capabilities.
OSI Reference Model
4.Transport
defines services to segment, transfer, and
reassemble the data.
Session
provides services to the presentation layer to
organize its dialogue and to manage data exchange
3.Network
provides services to exchange the individual
pieces of data over the network between identified end
devices.
6.Presentation
provides for common representation of
the data.
2.Data link
provides methods for exchanging data frames
between devices over a common media.
1.Physical
describes the mechanical, electrical,
functional, and procedural means to transmit bits across
physical connections.
7.Application
contains protocols used for process-to-process communications.
OSI Model / TCP/IP Model
similarities
share a common
application layer
share similar
architecture
Both models have
comparable transport and
network layers.
Knowledge of both
models is required by networking
professionals.
diiferences
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