QUESTION: 157

Which action is taken by a switch port enabled for PoE power classification override?

As power usage on a PoE switch port is checked data flow to the connected device is temporarily paused
When a powered device begins drawing power from a PoE switch port, a syslog message is generated
If a switch determines that a device is using less than the minimum configured power, it assumes the device has failed and disconnects it
Should a monitored port exceed the maximum administrative value for power, the port is shut down and err-disabled

Answer(s): D

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QUESTION: 158

What is a function spine-and-leaf architecture?

Offers predictable latency of the traffic path between end devices.
Exclusively sends multicast traffic between servers that are directly connected to the spine.
Mitigates oversubscription by adding a layer of leaf switches.
Limits payload size of traffic within the leaf layer.

Answer(s): A

Explanation:

With a spine-and-leaf architecture, no matter which leaf switch to which a server is connected, its traffic always has to cross the same number of devices to get to another server (unless the other server is located on the same leaf). This approach keeps latency at a predictable level because a payload only has to hop to a spine switch and another leaf switch to reach its destination.