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Free JN0-213 Exam Braindumps (page: 3)

Page 2 of 17
PDF with 65 Questions

Which component of Kubernetes runs on all nodes and ensures that the containers are running in a pod?

  1. kube-proxy
  2. kubelel
  3. container runtime
  4. kube controller

Answer(s): B

Explanation:

The kubelet is a component of Kubernetes that runs on all nodes in the cluster and ensures that containers are running in a pod910. It takes a set of PodSpecs that are provided through various mechanisms and ensures that the containers described in those PodSpecs are running and healthy.



Which two statements are correct about containers? (Choose two.)

  1. Containers include the entire operating system.
  2. Containers reduce deployment efficiency.
  3. Containers have faster boot times than VMs. www*
  4. Containers require an underlying operating system.

Answer(s): C,D

Explanation:

Containers are lightweight because they don't need the extra load of a hypervisor, but run directly within the host machine's kernel. This means they start up almost instantly and use less RAM. Images are constructed from layered filesystems and share common files, making disk usage and image downloads much more efficient. Containers are isolated from each other and the host system. They have their own filesystem and networking, and can be constrained to not allow root access outside the container. They run on top of a host operating system.



What are two Kubernetes objects? (Choose two.)

  1. cluster
  2. namespace
  3. pod
  4. service

Answer(s): C,D

Explanation:

In Kubernetes, a Pod is the smallest and simplest unit in the Kubernetes object model that you create or deploy. A Pod represents processes running on your cluster. A Service in Kubernetes is an abstraction which defines a logical set of Pods and a policy by which to access them.



Which two statements are correct about an overlay network? (Choose two.)

  1. The overlay network can only be built using a Layer 3 underlay network.
  2. The overlay network provides physical connectivity between devices.
  3. The overlay network is built using encapsulation tunnels.
  4. The overlay network is the virtual network used to connect multiple virtual machines (VMs).

Answer(s): C,D

Explanation:

An overlay network is a virtual network that is built on top of another network. Nodes in the overlay network are connected by virtual or logical links, each of which corresponds to a path, perhaps through many physical links, in the underlying network. For example, distributed systems such as peer-to-peer networks and client-server applications often overlay their own network connections over the physical network connections provided by the Internet






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