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Overhead
SONET overhead is not added as headers or trailers as we have seen in other protocols. Instead SONET insert overhead at a variety of location in middle of the frame. The function of overhead in SONET frame are described as follow.
What Automatic Repeat Request (ARQ)? Error control is both error detection and error correction. It allows the receiver to inform the sender of any frames lost or damaged in tr
Geo stationary satellite The satellite which is known as earth-orbiting satellite is called geo stationary satellite. The geo stationary satellite is placed directly over the e
Q. What is Session Layer in osi model? Session Layer : Allows two applications to establish, utilize and disconnect a connection between them known as a session. Gives for na
Microcells As cells become smaller, antennas move from the tops of tall buildings or hills, to the tops of small buildings or the sides of large buildings, and finally to lamp
What is on electronic payment system? Electronic payment systems are alternative cash credit payment methods using several electronic methods to pay for products and services in
Switches operate at layer 2. They enhance bandwidth by decreasing the number of devices sharing the media. They isolate collisions. Like a bridge they forward traffic based upon la
Create and simulate a network similar to the one shown here, using the NetML system. The network is a little more complex, as depicted at the right. There is an extra node
In distributed routing computation, every packet switch calculates its routing table locally and transmit messages to the neighbors. It also updates information regularly. If a pac
Data Routing Functions The data routing functions are functions that when executed set the path between source and destination. In dynamic interconnection networks there may be
Can you describe the concept of OSI layer
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