Compare between OSI and TCP/IP reference model.
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TCP/IP
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OSI
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1) It has four layers.
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1) It has 7 layers.
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2) It is predated to OSI (1970).
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2) It is postdate to TCP/IP (1983).
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3) Session layer & presentation layers are absent.
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3) Session& presentation layers are present.
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4) Protocol came first it model describe the existing protocol .
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4) Models were divided first. Doesn‟t state the protocols to be use.
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5) Particularly use in maximum networks.
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5) Not particularly use to compare other model.
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6) Can‟t be used to compose every model.
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6) Can be used to compose other model.
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7) Network/Internet layer is connection less
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7) N/W layer is both connection oriented & connectionless.
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8) Transport layer is both connection less & connection oriented.
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8)Transport layer is connection oriented.
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OSI reference model
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TCP/IP network model
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1)It has 7 layers
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1) It has 4 layers
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2)Transport layer guarantees delivery of packets
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2) Transport layer does not guarantees delivery of packets
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3)Horizontal approach
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3) Vertical approach
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4)Separate presentation layer
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4)No session layer, characteristics are provided by transport layer
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5)Separate session layer
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5)No presentation layer, characteristics are provided by application layer
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6)Network layer provides both connectionless and connection oriented services
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6)Network layer provides only connection less services
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7)It defines the services, interfaces and protocols very clearly and makes a clear distinction between them
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7)It does not clearly distinguishes between service interface and protocols
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8)The protocol are better hidden and can be easily replaced as the technology changes
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8)It is not easy to replace the protocols
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9)OSI truly is a general model
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9)TCP/IP cannot be used for any other application
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10)It has a problem of protocol filtering into a model
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10)The model does not fit any protocol stack.
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