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TroubleshootingeasyMultiple ChoiceObjective-mapped

XK0-006 Troubleshooting Practice Question

A technician wants to check the current IP address and subnet mask of the eth0 interface. Which command should they use?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

ip addr show dev eth0

The `ip addr show dev eth0` (or `ip addr`) displays IP addresses and subnet masks.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • nmcli dev show eth0

    Why it's wrong here

    nmcli shows NetworkManager details, not directly the IP address.

  • ip route show

    Why it's wrong here

    ip route shows routing table, not interface addresses.

  • ifconfig eth0

    Why it's wrong here

    ifconfig is deprecated but still works; however the question may expect ip command.

  • ip addr show dev eth0

    Why this is correct

    Correct: ip addr shows IPv4/IPv6 addresses and masks.

Visual reference

192.168.1.0 /24 256 addresses (254 usable) 192.168.1.0 /25 Subnet A 128 addr (126 usable) 192.168.1.128 /25 Subnet B 128 addr (126 usable) Borrowing 1 bit from host portion creates 2 subnets (/25)

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This XK0-006 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the XK0-006 exam.