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Exam CS0-003 topic 1 question 338 discussion

Actual exam question from CompTIA's CS0-003
Question #: 338
Topic #: 1
[All CS0-003 Questions]

An analyst receives alerts that state the following traffic was identified on the perimeter network firewall:



Which of the following best describes the indicator of compromise that triggered the alerts?

  • A. Anomalous activity
  • B. Bandwidth saturation
  • C. Cryptomining
  • D. Denial of service
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Suggested Answer: A 🗳️

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Popeyes_Chicken
Highly Voted 3 months ago
Selected Answer: A
Not seeing any evidence of cryptomining. Not enough to validate bandwidth saturation. 3 source machines with private addresses targeting one destination machine with a private address would be a DDoS. With source consisting of class C addresses and destination of class B. Seeing traffic from three machines target one machine in a different subnet would indicate anomalous activity. Upon further investigation, this may reveal itself to be benign or malicious. There isn't enough data to confirm that yet, which leads me to view this activity as anomalous.
upvoted 5 times
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ada26b1
Most Recent 3 weeks ago
Selected Answer: A
Anomalous activity could refer to behavior that deviates from normal traffic patterns, which might be the case if there's unusual communication or activity detected.
upvoted 1 times
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study_study
3 months ago
Selected Answer: B
B. Bandwidth saturation. This is based on the observed pattern of data transmission between the source (192.168.x.x) and the destination (172.16.2.8). In particular, the sudden spike in bytes sent and received, such as the large difference between 192.168.1.14 and 172.16.2.8 (64 bytes sent, 168468 bytes received), suggests a possible attempt to saturate the available bandwidth, which is typical of activities like data exfiltration or resource exhaustion.
upvoted 1 times
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OJ_Ayinla
4 months ago
Selected Answer: D
small packets sent to the same IP address over time is a typical indicator or DoS
upvoted 4 times
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