No Stupid Questions@lemmy.world · 8 months ago

How does data sent over the internet know where to go?

No Stupid Questions@lemmy.world · 8 months ago

I saw a map of undersea internet cables the other day and it’s crazy how many branches there are. It got me wondering - if I’m (based in the UK) playing an online game from someone in Japan for example, how is the route worked out? Does my ISP know that to get to place X, the data has to be routed via cable 1, cable 2 etc. but to get to place Z it needs to go via cable 3, 4?

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8 months ago
IPs and packets are well and good and I do have a decent working knowledge of TCP/IP, but what physically is actually happening? Thanks for replying anyway!

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