ExpertHard1 markMultiple Choice
GCP ACE · Question 09 · Domain 1.3: Installing and configuring the CLI
You are writing a bash script that creates a Compute Engine instance. The script needs to run without user interaction and output ONLY the external IP address of the newly created instance in JSON format. How should you format the gcloud command?
You are writing a bash script that creates a Compute Engine instance. The script needs to run without user interaction and output ONLY the external IP address of the newly created instance in JSON format. How should you format the gcloud command?
Answer options:
A.
gcloud compute instances create ... --silent --output=json
B.
gcloud compute instances create ... --quiet --format="json(networkInterfaces[0].accessConfigs[0].natIP)"
C.
gcloud compute instances create ... --no-prompts --json-only
D.
gcloud compute instances create ... --quiet | grep IP
How to approach this question
Identify the flags for disabling prompts (`--quiet`) and formatting output (`--format`).
Full Answer
B.gcloud compute instances create ... --quiet --format="json(networkInterfaces[0].accessConfigs[0].natIP)"✓ Correct
gcloud compute instances create ... --quiet --format="json(networkInterfaces[0].accessConfigs[0].natIP)"
The `--quiet` (or `-q`) flag disables all interactive prompts, which is essential for scripts. The `--format` flag allows you to change the output format (e.g., to json, yaml, csv) and use projections to select specific fields, such as the NAT IP address.
Common mistakes
Not knowing the `--format` flag capabilities or using standard Linux pipes when a native flag exists.
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