Chapter 4

1. Which ELK stack component covered in this chapter relies on the JDK we installed?
   1. Kibana
   2. Elasticsearch
   3. Logstash

   Answer: C – Logstash.

2. True or false: Logstash can be installed through the Kibana GUI.
   1. True
   2. False

   Answer: A – True.

3. What is the significance of the password that’s provided during the very first Elasticsearch run?
   1. It is a service account password that is used to integrate the ELK stack components
   2. It can never be changed
   3. It’s used to integrate the ELK stack components but is not technically a service account
   4. It can be changed a maximum of four times.

   Answer: A – It’s used to integrate ELK stack components but is also used to authenticate and manage Elasticsearch services and configurations, making it technically a service account password.

4. What is the primary function of a service account?
   1. It manages running background services
   2. It’s a non-human account to assist applications integrating with each other
   3. It holds services...