ANS-C01 Network Management and Operations Practice Question
A network engineer needs to monitor network performance between two EC2 instances in different Availability Zones. Which THREE metrics from Amazon CloudWatch should the engineer use?
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
✓
NetworkPacketsIn
Options A, D, and E are correct. NetworkPacketsIn, NetworkOut, and NetworkIn are standard EC2 CloudWatch metrics that measure network traffic volume and packet counts, useful for monitoring network performance between instances. Option B (VolumeQueueLength) is an EBS metric, not network. Option C (NetworkPacketsDropped) is not a standard CloudWatch metric for EC2.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
NetworkPacketsIn
Why this is correct
Measures number of incoming packets.
- ✗
VolumeQueueLength
Why it's wrong here
This is an EBS metric, not network.
- ✗
NetworkPacketsDropped
Why it's wrong here
Not a standard CloudWatch metric.
- ✓
NetworkOut
Why this is correct
Measures outgoing network traffic.
- ✓
NetworkIn
Why this is correct
Measures incoming network traffic.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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