Question: a) [4 marks] How do datagram services differ from virtual circuit services? b) [6 marks] What are the three primary advantages of MPLS over

a) [4 marks] How do datagram services differ from virtual circuit services? b) [6 marks] What are the three primary advantages of MPLS over other packet services? c) [6 marks] Briefly describe how a VPN works. d) [4 marks] Are there any WAN technologies that you would avoid if you were building a network today? Explain. Security Principles

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