1- Definition and introduction of its layer
2- Explain the network functions
3- Explain the data transfer...
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1- Definition and introduction of its layer 2- Explain the network functions 3- Explain the data transfer method in the network 4- Mention the protocols if there is and explain them 5- Network positives and negatives effect
for
physical layer
data link layer
network layer
transport layer
presentation layer
application layer
and the tcp/ip
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ANSWER ANS 1 PHYSICAL LAYER Definition and Introduction The Physical layer is the lowest layer of the OSI model It transfer the unstructured data in the form of bits The Physical resources are used here ie router switch etc Network Functions It deals with the physical connectivity of the stations It describes the wiring cablingpulses etc It also provides the functions to the above layer ie data link layer Data transfer Method The data is transferred in the form of unstructured bits in this layer Protocol used here The protocols used in this layer is Ethernet It is a protocol mostly used in LAN and in this the data is transferred in the from of frames Positive and Negative Positive The speed is very fast upto 54Mbps It is flexible and secure Negative It can be costly Cumbersome specification of the protocols 2 DATA LINK LAYER Definition and Introduction It is the second layer of the OSI model It is also called as protocol layer the data bits received by physcial layer are encoded as well as
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