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You just use a scratch test.Zirconia won't scratch glass at least not usually.It pretty mush is glass.A diamond will scratch pretty much anything.
you invented the ring
I think it is the large gold ring
yes because when you heat a metal ring it will expand
A special oil control ring
difficult
no, because it is easy
Mesh topology- a cable at fault not affect others. Ring topology- a cable at fault, only affect side by side, If main cable at fault ,whole system shut down. Star topology- a cable at fault, others are not affected. If Hub at fault, whole system shut down. Bus topology- main cable at fault, system will shut down. a cable at fault,will not affect others.
Fault tolerance.
Ring Topology How to run Ring topology
fault tolerance
Ring topology is the passive topology in computer networks
Topology: physical ring of trees, logical ring
Ring topology is an active topology because each station has to recreate the packet.
Ring Network Topology
How do hosts on a physical ring topology communication
bus topology, ring topology