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12-05-2023 09:34 PM
Which method is used by Discovery to determine if a Host IP is active or alive?
- A. Port Scan
- B. Traceroute
- C. Ping
- D. Classification
What is the correct answer between A and C? Please explain this in detail.
Solved! Go to Solution.
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12-05-2023 10:11 PM
Hi @BoHyun Jung ,
Not option A Port scanning is the first step in the Discovery process. The Shazzam probe performs port scanning, regardless of whether you use patterns for horizontal discovery.
Correct answer is C.Ping .
Please mark it as helpful and solution propsoed.
Thanks,
Anand
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3 weeks ago
ServiceNow Discovery uses the Ping method to determine if a host IP address is "alive" or reachable on the network. This is typically the initial check before proceeding to more intensive scanning phases.
- Mechanism: It works by sending an ICMP (Internet Control Message Protocol) Echo Request packet to the target IP address.
- Response: If the target host responds with an ICMP Echo Reply, it is considered alive and available for further scanning.
- Role in Discovery: While the Shazzam probe (the first phase of horizontal discovery) scans ports to see if they are active, a basic "alive" check often relies on Ping to quickly filter out unreachable addresses with low network overhead.
