I am new to networking. I have a small confusion. Can two pc be connected directly using straight through cable without any router or switch?

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Yes. But with a crossover cable. That's easy to figure out yourself. You may have questions about the firewalls and configs.

wikipedia wants to help you :-)


The answer is, "It depends." If the ethernet ports on one or both of the PCs support Auto MDI/MDIX, then the answer is, "Yes," otherwise, the answer is, "No."

Most modern PCs have ethernet ports which support Auto MDI/MDIX, so the answer is probably, "Yes," but you need to double check your equipment.

  • 1
    Gig: yes (because it's auto MDX) 10 or 100: needs a crossover. (I've never seen a 10/100 NIC that was auto. Switch ports, sure, but not a nic.)
    – Ricky
    Dec 15, 2015 at 21:31

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