The video tutorial explains Mutual Transport Layer Security (MTLS) and its application in Docker Swarm. MTLS uses X509 certificates for mutual authentication between services, enhancing security by preventing impersonation. In Docker Swarm, MTLS is used to authenticate, authorize, and encrypt node communications. The manager node generates root certificates and tokens for node addition, ensuring secure and legitimate connections. The tutorial also covers certificate verification, root CA generation, and certificate rotation, emphasizing the importance of maintaining secure communications within a Docker Swarm environment.

What is the primary purpose of Mutual Transport Layer Security (MTLS)?

• To encrypt data at rest

• To authenticate and encrypt communication between two services

• To provide a backup for data

• To manage user permissions

In a Docker Swarm, what role does the manager node play?

• It acts as a backup server

• It generates root certificates and manages node communication

• It stores user data

• It provides a user interface for Docker

What is the purpose of the tokens generated by the manager node in a Docker Swarm?

• To store configuration settings

• To manage user access

• To encrypt data

• To authenticate new nodes joining the swarm

Why is root CA rotation recommended in a Docker Swarm?

• To improve data storage

• To enhance user interface

• To ensure compromised managers cannot connect to the cluster

• To increase network speed

How often are certificates renewed by default in a Docker Swarm?

• Every 30 days

• Every 120 days

• Every 60 days

• Every 90 days