in Computer Networks
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Anyone Explain What is meant by Hop with the help of diagram ?
in Computer Networks
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A hop happens when a packet is transferred from one network segment to the next in wired computer networking, which includes the Internet. When a data packet moves from a source to a destination, routers are involved. The number of network devices that data passes through on its way from source to destination is referred to as the hop count. Depending on the routing protocol, this may include the source and destination, so the first hop is either counted as hop 0 or hop 1.

Since each hop results in store and forward latencies as well as other latencies, a high number of hops between source and destination indicates poor real-time performance.

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Thank you for the answer.

An implementation of Hop count can be found in Non-adaptive routing algorithm:

Non adaptive Routing Algorithm: These algorithms do not base their routing decisions on measurements and estimates of the current traffic and topology. Instead the route to be taken in going from one node to the other is computed in advance, off-line, and downloaded to the routers when the network is booted. This is also called static-routing.

Flooding: Flooding is one the static-routing algorithm. It adapts the technique in which every incoming packet is sent on every outgoing line except the one on which it arrived.
One problem with this method is packets may go in loop. To overcome this problem there are few solutions.

One of them is hop count: Every packet has a hop count associated with it. This is decremented(or incremented) by one by each node which sees it. When hop count becomes zero (or a maximum possible value) the packet is dropped.

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