Network Engineering
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jonathanjo

Once upon a time a computer programmer I have been connecting networks since the 1980s. Nowadays mostly management consultancy but still have to be practical from time to time.

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48 Why isn't UDP with reliability (implemented at Application layer) a substitute of TCP? Jun 27 '19
31 Why does Ethernet use EtherType field to determine what type of packet is in a frame instead of just looking at the packet header? Apr 16 '20
24 acknowledgment by TCP does not guarantee that the data has been delivered Dec 20 '18
23 Where is Ping's “round-trip time” stored in the IP header? Sep 14 '18
20 Worst-case efficiency of PPP escaping mechanism Feb 5 '20
12 Do network adapters read incoming bits in a single stream? Oct 17 '18
11 Why couldn't a nework address be used as as broadcast address as well? May 21 '18
10 Appropriate certificate to ask for a fibre installation (ANSI/TIA-568.3-D?) May 2 '19
9 What's the difference between Ethernet link and Serial link? Nov 27 '18
9 Is there a way to capture only gratuitous ARP's using tcpdump? May 2 '19
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