Docker Certified Associate Certification Training Course - Docker Swarm Features

The video tutorial provides an overview of Docker Swarm's key features, including cluster management, decentralized design, declarative service model, scaling, multi-host networking, service discovery, load balancing, security, and rolling updates. Each feature is explained in detail, highlighting how Docker Swarm manages services, ensures security, and facilitates updates.

What is one of the key benefits of Docker Swarm's decentralized design?

• It requires additional software for management.

• It allows specialization at deployment time.

• It enables building a swarm from a single disk image.

• It limits the number of nodes in a swarm.

How does Docker Swarm handle scaling of services?

• By automatically adding or removing tasks to maintain the desired state.

• By manually adjusting the number of nodes.

• By requiring a restart of the entire swarm.

• By using external scripts to manage tasks.

What is the purpose of an overlay network in Docker Swarm?

• To provide a unique DNS name for each service.

• To assign IP addresses to containers across multiple hosts.

• To expose services to an external load balancer.

• To enforce TLS mutual authentication.

Which feature of Docker Swarm ensures secure communication between nodes?

• Rolling updates

• Declarative service model

• Load balancing

• TLS mutual authentication and encryption

What capability does Docker Swarm's rolling updates feature provide?

• It allows for immediate updates to all nodes.

• It enables incremental updates with rollback options.

• It requires manual intervention for each update.

• It limits updates to a single node at a time.