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 one is a repeater access point.
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 they are placed physically in different buildings.

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Computer Networking
ARP (Address Resolution Protocol) is

a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
a protocol that handles error and control messages
a protocol used to monitor computers
None of these
a TCP/IP high level protocol for transferring files from one machine to another

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