Which router command can be used to verify the type of cable connected to interface serial 0/0?

The correct answer is B. show controllers serial 0/0. 'show controllers serial 0/0' displays physical Layer 1 information about the serial interface, including whether the cable type is DCE or DTE, the hardware type, and clock rate. This is the only command that reveals the physical cable information. 'show interfaces serial 0/0' (C

Network Device Management

Question

Which router command can be used to verify the type of cable connected to interface serial 0/0?

Options

Ashow running-config
Bshow controllers serial 0/0
Cshow interfaces serial 0/0
Dshow ip interface serial 0/0

How the community answered

(58 responses)

A
2% (1)
B
91% (53)
C
2% (1)
D
5% (3)

Explanation

'show controllers serial 0/0' displays physical Layer 1 information about the serial interface, including whether the cable type is DCE or DTE, the hardware type, and clock rate. This is the only command that reveals the physical cable information. 'show interfaces serial 0/0' (C) shows Layer 2 and statistical data (encapsulation, input/output errors, bandwidth) but not the cable type. 'show ip interface serial 0/0' (D) shows IP-specific data like ACLs applied and IP address status. 'show running-config' (A) shows the configured commands, not the physical hardware state.

Topics

#show controllers#serial interface#cable type#interface verification

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