During
the data transmission there are chances that the data bits in the frame might
get corrupted. This will require the sender to re-transmit the frame and hence
it will increase the re-transmission overhead. By considering the scenarios
given below you have to choose whether the packets should be encapsulated in a
single frame or multiple frames in order to minimize the re-transmission
overhead.
Justify
your answer with one valid reason for both the scenarios given below.
Scenario
A: Suppose your are using a network which is very prone to errors.
Scenario
B: Suppose you are using a network with high reliability and accuracy.
Answer:
Scenario A:
Alternating bit Protocol
The Simplest retransmission protocol
is the alternating Bit protocol (ABP). The sender numbers the packets
alternately 0 and 1. The receiver acknowledges every correct packet that it
receives with the same number as the received packet. The sender waits for the
receiver' s acknowledgment.
Mesh Topology Network
This topology is divided into two different types, Full mesh and partial mesh. A full mesh topology provides a connection from each node to every other nodes to every other node on the network. This provides a fully redundant network and is the most reliable of all network. If any link or node in the network fails, then there will be another that will allow network traffic to continue.
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