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Q. Define layered network model?
- The OSI Reference Model is collection of seven layers every specifying particular network functions.
- The process of breaking up the functions or else tasks of networking into layers reduces complexity.
- Every layer provides a service to the layer above it in the protocol specification.
- Every layer communicates with the same layer's software or hardware on other computers.
- The lower 4 layers (network, transport, data link and physical -Layers 3, 4, 2, and 1) are concerned with the flow of data from end to end through the network.
- The upper top four layers of the OSI model (application and presentation and session-Layers 6, 7and 5) are orientated more toward services to the applications.
- Data is encapsulated with the essential protocol information as it moves down the layers before network transit.
Q. Explain Types of Redundancy Checks? Parity Check Simple Parity Check Two Dimensional Parity Check / Longitudinal Redundancy Check (LRC) CRC (Cyclic Redund
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What are the IP address ranges for public and private IP address?
what is logical ring maintenance and how does it work>?
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In FLSM subnet mask of all subnets will b same. But in FLSM it changes.
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