Networking Basics (2025) | What is a switch, router, gateway, subnet, gateway, firewall & DMZ
#networking tutorial for beginners
#networking fundamentals
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#what is router
#what is subnetting
#what is the difference between router and switch
#how firewalls work
#what is gateway
#how switch works in networking
#what is dmz
#demilitarized zone network
#demilitarized zone
#default gateway
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#what is dmz in computing
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