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What are upper layer faults and how do you rectify them?

Answer»

If you still can't find a solution after examining physical connectivity, local connectivity, IP connectivity, and routing issues, the fault could be in the transport and APPLICATION layer protocol.

A defect can occur for a variety of reasons:

  • The DATA connection has been lost.
  • Incoming and OUTGOING traffic is blocked by a packet filter or firewall.
  • On the server, a specific service is unavailable.
  • Between the client and the server HOST, there could be an authentication and access issue.
  • Issues with software incompatibility or mismatches between the source and destination hosts.


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