Computer Networking
What does a VLAN do?

Breaks up broadcast domains in a layer 2 switch internetwork.
Provides multiple broadcast domains within a single collision domain.
Acts as the fastest port to all servers.
Provides multiple collision domains on one switch port.

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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 multiple access points, but they are placed physically in different buildings.
That you have more than one access point and they are in the same SSID connected by a distribution system.
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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Computer Networking
You save the configuration on a router with the copy running-config startup-config command and reboot the router. The router, however, comes up with a blank configuration. What can the problem be?

The newly upgraded IOS is not compatible with the hardware of the router.
The configuration register setting is incorrect.
NVRAM is corrupted.
You didn

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