Examkin

Soru

Zorluk: KolayPhysical Interface and Cabling Types

A network administrator needs to perform the initial out-of-band configuration of a newly unboxed Cisco Catalyst switch by connecting a laptop directly to the switch RJ-45 console port. Which cable type must be used to establish this management connection?

  1. Rollover cableCevap
  2. B
    Straight-through cable
  3. C
    Crossover cable
  4. D
    Single-mode fiber patch cable

Cevap

Rollover cable
A rollover cable is designed specifically for out-of-band management access to Cisco networking device console ports. It completely reverses the pin order from pin 1 through 8 on one connector to pins 8 through 1 on the opposing RJ-45 connector, allowing serial communication between a terminal/laptop and the device management hardware.

Adım Adım Çözüm

1
Identify the purpose of the interface link
The objective is local out-of-band administrative access through the switch's RJ-45 console interface.
Console management uses serial communication signal pinouts rather than standard Ethernet network data pinouts.
2
Determine the required cabling pinout structure
A rollover cable (also known as a Yost cable or console cable) reverses the pin ordering from end to end (pin 1 to pin 8, pin 2 to pin 7, etc.), aligning the terminal adapter serial signals with the Cisco console port.
Standard Ethernet cable pinouts (T568A or T568B straight-through and crossover cables) do not map the required serial transmit and receive signals correctly.

Anahtar Kavram

Cisco Console Port Cabling and Rollover Pinouts
Bu soruyu puanla

Konular

Physical Interface and Cabling Types

Bu konudan daha fazla soru