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GCFA · Question #197
GCFA Question #197: Real Exam Question with Answer & Explanation
The correct answer is A. grep Promisc /var/log/messages B. ip link C. ifconfig | grep PROMISC. On Linux, promiscuous mode can be detected using multiple commands that inspect interface flags or query system logs.
Question
You want to retrieve information whether your system is in promiscuous mode or not. Which of the following commands will you use? Each correct answer represents a complete solution. Choose all that apply.
Options
- Agrep Promisc /var/log/messages
- Bip link
- Cifconfig | grep PROMISC
- Dshow promisc
Explanation
On Linux, promiscuous mode can be detected using multiple commands that inspect interface flags or query system logs.
Common mistakes.
- D. 'show promisc' is not a valid Linux shell command - it resembles Cisco IOS privileged-mode syntax and has no equivalent in standard Linux networking utilities.
Concept tested. Detecting promiscuous mode on Linux interfaces
Reference. https://man7.org/linux/man-pages/man8/ip-link.8.html
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