Computer Networking
MAC is

a method access control technique or multiple-access transmission media
a very common bit-oriented data link protocol issued to ISO.
a method of determining which device has access to the transmission medium at any time
network access standard for connecting stations to a circuit-switched network
None of these

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Computer Networking
You are connecting your access point and it is set to root. What does Extended Service Set ID mean?

That you have more than one access point and they are in the same SSID connected by a distribution system.
That you have multiple access points, but they are placed physically in different buildings.
That you have more than one access point and they are in separate SSIDs connected by a distribution system.
That you have multiple access points, but one is a repeater access point.

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