XK0-006 Troubleshooting Practice Question
A Linux administrator needs to view all current IPv4 addresses assigned to network interfaces on a system. Which command should be used?
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
The 'ip addr' command displays all IP addresses assigned to network interfaces. 'ifconfig' is deprecated, 'ip link' shows link-layer info, and 'hostname -I' only shows primary IPs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ip link show
Why it's wrong here
ip link shows interface state and MAC, not IPv4 addresses.
- ✗
ifconfig -a
Why it's wrong here
ifconfig is deprecated; ip addr is the modern replacement.
- ✗
hostname -I
Why it's wrong here
hostname -I only shows the primary IP address, not all.
- ✓
ip addr
Why this is correct
ip addr shows all IP addresses on interfaces.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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