POC Monitoring & Reporting Tools 2

Question 1

Which Python library provides a `RotatingFileHandler` to automatically rotate log files when they reach a specified size?

Accepted Answer

logging

Answer

The built-in `logging` module includes `RotatingFileHandler` in `logging.handlers` to rotate files based on size.

Question 2

In Python's `logging` module, what numeric level corresponds to `WARNING`?

Accepted Answer

30

Answer

WARNING maps to level 30; DEBUG=10, INFO=20, ERROR=40, CRITICAL=50.

Question 3

Which method of a `logging.Logger` object logs a message only if the logger's effective level is DEBUG or lower?

Accepted Answer

logger.debug()

Answer

`logger.debug()` emits a log record at level DEBUG (10), the lowest standard level.

Question 4

What does the `Prometheus` Python client library use to expose metrics by default?

Accepted Answer

An HTTP /metrics endpoint

Answer

The `prometheus_client` library starts an HTTP server exposing metrics at `/metrics`, which Prometheus scrapes.

Question 5

Which `logging.Formatter` directive inserts the logger's name into a log message?

Accepted Answer

%(name)s

Answer

`%(name)s` is replaced with the name passed to `logging.getLogger(name)`.

(POC) Python Online Certification Practice Test