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31 Days Before Your CCENT Certification by Scott Bennett

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Day 24: Switch Operation

Remember the following key points about switch ports:

• A switch port can operate in full-duplex mode, allowing it to send and receive data simultaneously.

• A switch port can also operate in half-duplex mode, allowing the port to alternately send and receive data, but not simultaneously send and receive.

• When a device is connected to a switch, the switch attempts to autonegotiate the speed and either full- or half-duplex transmission. If the other device does not support autonegotiation, the switch defaults to the speed of the other device and half-duplex.

• An administrator can turn off autonegotiation and manually set the switch to full or half duplex. If a connected device is incapable of autonegotiation, you can ...

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