GPEN · Question #492
Analyze the output of the two commands below: Which of the following can be factually inferred from the results of these commands?
The correct answer is C. The host 10.63.104.1 is not issuing ICMP packets.. This question tests the ability to draw only factual, evidence-based inferences from traceroute and ping command output rather than speculative conclusions about filtering or dropping behavior.
Question
Analyze the output of the two commands below:
Which of the following can be factually inferred from the results of these commands?
Exhibit
Options
- AThe router 192.16S.U6.1 is filtering UDP traceroute.
- BThe host 10.63.104.1 is silently dropping UDP packets.
- CThe host 10.63.104.1 is not issuing ICMP packets.
- DThe router 10 63.104 206 is dropping ICMP traceroute.
How the community answered
(19 responses)- A16% (3)
- B5% (1)
- C74% (14)
- D5% (1)
Why each option
This question tests the ability to draw only factual, evidence-based inferences from traceroute and ping command output rather than speculative conclusions about filtering or dropping behavior.
Concluding that router 192.168.x.x is filtering UDP traceroute is speculative - the output does not show UDP packets being lost at that specific router, so this cannot be factually inferred.
Stating the host is 'silently dropping' UDP packets goes beyond the observable data, as the output only shows an absence of ICMP responses and does not confirm what happens to UDP packets at the destination.
When the command output shows traceroute requests reaching intermediate routers but no ICMP responses originating from host 10.63.104.1, the only factual inference directly supported by the data is that the host is not issuing ICMP packets. This conclusion requires no additional assumptions about filtering policies or silent drops - it is directly observable from the absence of ICMP messages in the output. Other conclusions require inferring intent or behavior that is not directly visible in the output.
The claim that router 10.63.104.206 is dropping ICMP traceroute is not directly supported by the output; the observable fact is the destination host's lack of ICMP response, not packet loss at a specific intermediate router.
Concept tested: Interpreting traceroute output and ICMP response behavior
Source: https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/tracert
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