PCA Multiple Select — 10 Questions

Question 1

Which TWO of the following are necessary to successfully inhibit an alert in Alertmanager?

Accepted Answer

target_matchers. Inhibition requires a 'target_matchers' (the alert to be silenced) and 'source_matchers' (the alert that triggers the silence), plus common labels to correlate the two.

Answer

repeat_interval

Answer

group_wait

Answer

group_interval

Question 2

Which THREE are true regarding the Prometheus TSDB?

Accepted Answer

It uses an inverted index for fast searching.. It uses blocks, WAL, and index files, and it is optimized for time-series data.

Answer

It uses a B-tree for all queries.

Answer

It is a relational database.

Question 3

Which TWO of the following are true about the Blackbox exporter?

Accepted Answer

It supports HTTP, TCP, and DNS. It is used for active probing and supports multiple modules for different protocols.

Answer

It is the only exporter for databases

Answer

It automatically instruments application code

Answer

It is a passive metric collector

Question 4

Which THREE of the following are valid components within a Prometheus Alerting Rule file?

Accepted Answer

expr. Prometheus alerting rules contain a 'groups' array, which contains individual 'rules' (alerts or recordings), and each alert rule must have an 'alert' name and 'expr'.

Answer

receiver

Answer

routing_tree

Question 5

Which TWO of the following are valid components of an Alertmanager configuration file?

Accepted Answer

receivers. A standard Alertmanager config file requires 'route' (the routing tree) and 'receivers' (the notification targets).

Answer

storage_path

Answer

global_variables

Answer

scrape_configs

Question 6

Which TWO of these are potential side effects of high-cardinality metrics?

Accepted Answer

High memory consumption on the Prometheus server.. Memory exhaustion (OOM) and slow query performance are the direct results of high cardinality.

Answer

Reduced CPU usage on target.

Answer

Faster alert evaluation.

Answer

Decreased network bandwidth.

Question 7

Which THREE of the following are true about the Prometheus Text Exposition Format?

Accepted Answer

It is line-oriented. It is line-oriented, supports comments starting with #, and each metric line contains the name, optional labels, and value.

Answer

It is a binary protocol

Answer

It requires an XML schema

Question 8

Which THREE of the following are standard ways to send notifications from Alertmanager?

Accepted Answer

Webhook. Webhook, Email, and PagerDuty are built-in, widely used receiver types.

Answer

FTP

Answer

SSH

Question 9

Which THREE of the following are valid Alertmanager routing tree parameters?

Accepted Answer

receiver. Routes can filter by 'match', 'match_re', and define a 'receiver'.

Answer

server

Answer

auth_token

Question 10

Which TWO of the following are benefits of using recording rules?

Accepted Answer

Simplifying complex queries. Recording rules improve performance for dashboards and provide pre-computed metrics for alerting.

Answer

Adding authentication to metrics

Answer

Automatically increasing retention

Answer

Providing UI for alerts