CJE Distributed Builds & Agent Management

Question 1

What is the default TCP port used by Jenkins agents when connecting to the controller via the inbound agent (JNLP) protocol?

Accepted Answer

50000

Answer

8080

Answer

22

Answer

443

Question 2

What is the primary purpose of assigning a 'label' to a Jenkins agent?

Accepted Answer

To group agents so that jobs can target nodes with specific capabilities or OS types

Answer

To provide a human-readable display name for the agent in the UI

Answer

To set the job execution priority on that agent

Answer

To encrypt communications between the agent and the controller

Question 3

Which Jenkins agent connection method should be used when a firewall prevents the controller from initiating a connection to the agent?

Accepted Answer

Launch agent by connecting it to the controller (Inbound/JNLP)

Answer

SSH Launch Method

Answer

Launch agent via execution of command on controller

Answer

Windows Management Instrumentation (WMI)

Question 4

What does the '# of executors' setting on a Jenkins node control?

Accepted Answer

The number of concurrent builds that can run simultaneously on that node

Answer

The number of jobs that can be queued for that node

Answer

The maximum number of plugin installations on that node

Answer

The number of workspaces retained on that node

Question 5

What is the 'Remote root directory' setting when configuring a Jenkins agent?

Accepted Answer

The directory on the agent machine where Jenkins stores workspaces, caches, and build data

Answer

The URL of the agent's web management interface

Answer

The path to the Jenkins home directory on the controller

Answer

The directory on the agent containing SSL certificates for secure communication

Question 6

What does the 'Availability' setting for a Jenkins agent control?

Accepted Answer

When the agent should be online — always, on a schedule, or on demand

Answer

Which user groups are permitted to run builds on the agent

Answer

The network bandwidth available to the agent

Answer

The disk space threshold before the agent goes offline

Question 7

Which plugin enables Jenkins to dynamically provision and terminate Amazon EC2 instances as build agents?

Accepted Answer

Amazon EC2 Plugin

Answer

Docker Pipeline Plugin

Answer

Kubernetes Plugin

Answer

CloudBees AWS Credentials Plugin