CLI output formats (json, table, text) in AWS - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ service_behavior

intermediate

AWS CLI Output Format: JSON vs Table

You run the AWS CLI command aws s3 ls with the output format set to json and then with table. What is the main difference in the output you will see?

A JSON output shows structured data with keys and values, while table output shows a formatted, human-readable table.

B JSON output shows colored text, table output shows plain text without colors.

C JSON output is only for errors, table output shows successful command results.

D JSON output is a plain text list of filenames, table output shows JSON objects.

💡 Hint

Think about how JSON and tables represent data differently.

JSON output provides structured data with keys and values, useful for automation. Table output formats the data into a readable table for humans.

🧠 Conceptual

intermediate

Default AWS CLI Output Format

What is the default output format of the AWS CLI if you do not specify any output option?

A table

B json

C text

D yaml

💡 Hint

Check the AWS CLI documentation for default settings.

The AWS CLI defaults to JSON output format unless changed by configuration or command option.

❓ Configuration

advanced

Changing AWS CLI Output Format Permanently

You want to change the AWS CLI output format to table permanently for your user. Which command correctly updates your AWS CLI configuration?

A aws configure --output table

B aws configure output table

C aws set output table

D aws configure set output table

💡 Hint

Look at the syntax for the aws configure set command.

The correct syntax to set output format permanently is aws configure set output table.

❓ service_behavior

advanced

AWS CLI Output Format: Text

When using the AWS CLI with output format set to text, what is the typical structure of the output?

A Plain text with tab-separated columns and no JSON structure.

B JSON objects with indentation and line breaks.

C A formatted table with borders and headers.

D XML formatted output with tags.

💡 Hint

Think about how text output differs from JSON and table.

Text output is plain text with tab-separated columns, easy to read but not structured like JSON.

✅ Best Practice

expert

Choosing AWS CLI Output Format for Automation

You are writing a script that processes AWS CLI command output to automate resource management. Which output format should you choose to make parsing easiest and most reliable?

A text

B table

C json

D yaml

💡 Hint

Consider which format is easiest for machines to parse.

JSON is structured and widely supported for parsing in scripts, making it the best choice for automation.