Explanation:
A hub is used to send the message from one port to other ports.It does not know the specific address of the destination where the message needs to send.it works on Physical layer of the OSI model(layer 1).
A switch can handle data and it knows the specific address of the destination.A switch works on the data link Layer of the OSI model(layer 2).
Answer:
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All server side errors start with 5XX
Answer:
behavior that is good for everyone
following the rules
behaving in a way that would be easy to defend
Explanation: