Which IEEE 802 standard defines a bus topology using coaxial baseband cable and is able to transmit at 10Mbps?

i.e cannot logon his computer to access his files? If a user id is revoked, can a manager still get the user id and password, log on to ex employee's computer?...

I tried searching the difference between a router and a switch, someone explained the switch as a Port extender while the Router creates A LAN network and connects to the interne...