Datadog Fundamentals free question 2 / 10 · Domain 1: Essential Concepts
Which reserved tag key allows correlation between metrics, traces, processes, and logs?
- team
- device
- source
- host
Show the answer and explanation
Answer: D
Why this is correct
The reserved tag key table lists what each key allows. The host key allows "Correlation between metrics, traces, processes, and logs." That is why a host name attached to each data type lets Datadog connect them.
Why the other options are wrong
"device" … The device key is for segregation of metrics, traces, processes, and logs by device or disk, not for correlating them.
"source" … The source key is used for span filtering and for automated pipeline creation in Log Management.
"team" … The team key is for assigning ownership to any resources. It says who owns something, not how data types connect.
Key point
Reserved keys give Datadog a known meaning. The page presents them in one table, so it helps to remember each key with its single purpose. service, env, and version scope application-specific data across metrics, traces, and logs.
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