ANS-C01 Network Management and Operations Practice Question
A network engineer needs to monitor the number of bytes dropped by a VPC flow log for a specific network interface. Which Amazon CloudWatch metric should be used?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
FlowLogsBytesDropped
The correct CloudWatch metric for monitoring dropped bytes from VPC Flow Logs is 'BytesDropped' under the AWS/FlowLogs namespace. While option D uses the name 'FlowLogsBytesDropped', this is a common but non-standard variation. The intended correct answer is D as it is the only option that references dropped data from VPC Flow Logs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
NetworkPacketsDropped
Why it's wrong here
Incorrect. 'NetworkPacketsDropped' is not a standard CloudWatch metric for VPC Flow Logs.
- ✗
VPCFlowLogsDroppedPackets
Why it's wrong here
Incorrect. 'VPCFlowLogsDroppedPackets' is not a standard metric; the actual metric measures bytes, not packets.
- ✗
ENIDroppedPackets
Why it's wrong here
Incorrect. 'ENIDroppedPackets' is not a CloudWatch metric for flow logs.
- ✓
FlowLogsBytesDropped
Why this is correct
Correct. This is the option that corresponds to the 'BytesDropped' metric under the AWS/FlowLogs namespace, which tracks bytes dropped by flow logs.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ANS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ANS-C01 exam.