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- The model was developed by the ISO (International Organisation for Standardisation) in 1984. It is currently considered the primary Architectural model for inter-computer communications.
- The OSI (Open Systems Interconnection) reference model is a descriptive network scheme. It makes sure greater compatibility and interoperability between various types of network technologies.
- The OSI model describes how information or data makes its way from application programmes (such like spread sheets) through a network medium (such like wire) to another application programme located on another network.
- The OSI reference model divides the difficulty of moving information between computers over a network medium into SEVEN smaller and more manageable problems.
- This separation into lesser more manageable functions is known as layering.
802.11a OFDM a) Orthogonal frequency-division multiplexing utilizing a 5-GHz band b) Same as FDM except all sub bands are used by only one source at a given time c) Secu
Question: (a) With the help of a diagram, describe a typical DNS system. (b) Using signal sequence or state transition diagrams, illustrate the following scenarios: i.
distortion
Difference among the communication and transmission? Transmission is a physical movement of information and concern issues as bit polarity, synchronization, clock etc. Commu
What is the disadvantage of a star topology? One major drawbacks of star topology is that once the central hub or switch get damaged, the whole network becomes unusable.
Explain the meaning of Disassociation A notification from either a station or an AP that an existing association is terminated. A station should provide this notification befor
Source Port Number This fields occupies the first 16 bytes of the UDP header. This fields typically hold the UDP port number of the application sending this datagram. The
Shared Programming Using Library Routines The most well-liked of them is the use of combo function called fork() and join(). Fork() function is used to make a new child proces
Name the layer responsible for putting 1s and 0s into a logical group? Ans) Frames are broken down into 1s and 0s and placed onto the physical medium by the Data Lin layer.
Primary Function Core network typically providing the followings functionality 1.Aggregation : the highest level of aggregation in a service provider networks. The
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