200-301 · Question #699
What interconnection cable can you use when you use a MDI connection?
The correct answer is C. crossover. When connecting two MDI (Medium Dependent Interface) devices directly, a crossover cable is required to allow communication.
Question
What interconnection cable can you use when you use a MDI connection?
Options
- Acut-through
- Bstraight-through
- Ccrossover
- Drollover
How the community answered
(42 responses)- A7% (3)
- B2% (1)
- C88% (37)
- D2% (1)
Why each option
When connecting two MDI (Medium Dependent Interface) devices directly, a crossover cable is required to allow communication.
Cut-through refers to a forwarding method in switches, not a type of cable.
A straight-through cable is used for connecting an MDI device to an MDI-X (Medium Dependent Interface Crossover) device, where one device transmits on 1/2 and receives on 3/6, and the other does the opposite.
An MDI connection refers to a port configured to transmit on pins 1/2 and receive on pins 3/6. When connecting two MDI ports (e.g., PC to PC or switch to switch without Auto-MDIX), a crossover cable is necessary to 'cross' the transmit and receive pairs, ensuring that the transmit pair of one device connects to the receive pair of the other and vice versa.
A rollover cable (console cable) is used to connect a computer's serial port to a router or switch's console port for management, not for network data interconnection.
Concept tested: Ethernet cable types and MDI/MDI-X connections
Source: https://www.cisco.com/c/en/us/support/docs/smb/switches/cisco-small-business-200-series-smart-switches/smb4061-use-auto-mdix-feature-on-switches-of-cisco-smb-200-300.html
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