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210-255 · Question #156
210-255 Question #156: Real Exam Question with Answer & Explanation
The correct answer is A: netstat -I. The netstat command with the listening flag (-l, which may render as -I in some fonts) displays open listening ports on a system.
Host-Based Analysis
Question
Which command can be used to find open ports on a system?
Options
- Anetstat -I
- Bnetstat -v
- Cnetstat -r
- Dnetstat-g
Explanation
The netstat command with the listening flag (-l, which may render as -I in some fonts) displays open listening ports on a system.
Common mistakes.
- B. netstat -v enables verbose output mode, providing additional detail on existing connections rather than specifically listing listening or open ports.
- C. netstat -r displays the kernel IP routing table, showing network routes and gateways rather than open port information.
- D. netstat -g displays IPv4 and IPv6 multicast group membership information, which is unrelated to identifying open ports on a system.
Concept tested. netstat command flags for open port enumeration
Reference. https://man7.org/linux/man-pages/man8/netstat.8.html
Topics
#netstat#open ports#network commands#host analysis
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