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Question 1

(0)

Will this command display a list of volumes for a specific container? Solution. 'docker container inspect nginx'

Question 2

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Is this an advantage of multi-stage builds? Solution. better logical separation of Dockerfile instructions for increased readability

Question 3

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Does this command create a swarm service that only listens on port 53 using the UDP protocol? Solution. 'docker service create -name dns-cache -p 53:53 -constraint networking.protocol.udp=true dns-

Question 4

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Does this command create a swarm service that only listens on port 53 using the UDP protocol? Solution. 'docker service create -name dns-cache -p 53:53/udp dns-cache'

Question 5

(0)

During development of an application meant to be orchestrated by Kubernetes, you want to mount the /data directory on your laptop into a container. Will this strategy successfully accomplish this?

Question 6

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During development of an application meant to be orchestrated by Kubemetes, you want to mount the /data directory on your laptop into a container. Will this strategy successfully accomplish this?

Question 7

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Is this an advantage of multi-stage builds? Solution: better caching when building Docker images

Question 8

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Are these conditions sufficient for Kubernetes to dynamically provision a persistentVolume, assuming there are no limitations on the amount and type of available external storage? Solution: A persi

Question 9

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You add a new user to the engineering organization in DTR. Will this action grant them read/write access to the engineering/api repository? Solution. Mirror the engineering/api repository to one o

Question 10

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Is this the purpose of Docker Content Trust? Solution. Sign and verify image tags.

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Related questions

The Kubernetes yaml shown below describes a networkPolicy. Will the networkPolicy BLOCK this traffic? Solution: a request issued from a pod lacking the tier: api label, to a pod bearing the tier: backend label

Does this command create a swarm service that only listens on port 53 using the UDP protocol? Solution. 'docker service create -name dns-cache -p 53:53 -constraint networking.protocol.udp=true dns-cache'

Is this a supported user authentication method for Universal Control Plane? Solution. x.500

Will this command display a list of volumes for a specific container? Solution. 'docker container logs nginx --volumes'

Is this a way to configure the Docker engine to use a registry without a trusted TLS certificate? Solution. Set INSECURE_REGISTRY in the' /etc/docker/default' configuration file.

The Kubernetes yaml shown below describes a clusterIP service. Is this a correct statement about how this service routes requests? Solution: Traffic sent to the IP of this service on port 8080 will be routed to port 80 in a random pod with the label aPP: nginx.

A Kubernetes node is allocated a /26 CIDR block (64 unique IPs) for its address space. If every pod on this node has exactly two containers in it, how many pods can this address space support on this node?

Will this command list all nodes in a swarm cluster from the command line? Solution. 'docker inspect nodes

A user's attempts to set the system time from inside a Docker container are unsuccessful. Could this be blocking this operation? Solution. SELinux

Will this command display a list of volumes for a specific container? Solution: docker volume inspect nginx'

Question 164 - DCA discussion

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Which networking drivers allow you to enable multi-host network connectivity between containers?

A.

macvlan, ipvlan, and overlay

B.

bridge, user-defined, host

C.

host, macvlan, overlay, user-defined

D.

bridge, macvlan, ipvlan, overlay

Suggested answer: D

Explanation:

: The networking drivers that allow you to enable multi-host network connectivity between containers are bridge, macvlan, ipvlan, and overlay. These drivers create networks that can span multiple Docker hosts, and therefore enable containers on different hosts to communicate with each other. The other drivers, such as host, user-defined, and none, create networks that are either isolated or limited to a single host. Here is a brief overview of each driver and how it supports multi-host networking:

* bridge: The bridge driver creates a network that connects containers on the same host using a Linux bridge. However, it can also be used to create a network that connects containers across multiple hosts using an external key-value store, such as Consul, Etcd, or ZooKeeper. This feature is deprecated and not recommended, as it requires manual configuration and has some limitations. The preferred driver for multi-host networking is overlay1.

* macvlan: The macvlan driver creates a network that assigns a MAC address to each container, making it appear as a physical device on the network. This allows the containers to communicate with other devices on the same network, regardless of the host they are running on. The macvlan driver can also use 802.1q trunking to create sub-interfaces and isolate traffic between different networks2.

* ipvlan: The ipvlan driver creates a network that assigns an IP address to each container, making it appear as a logical device on the network. This allows the containers to communicate with other devices on the same network, regardless of the host they are running on. The ipvlan driver can also use different modes, such as l2, l3, or l3s, to control the routing and isolation of traffic between different networks3.

* overlay: The overlay driver creates a network that connects multiple Docker daemons together using VXLAN tunnels. This allows the containers to communicate across different hosts, even if they are on different networks. The overlay driver also supports encryption, load balancing, and service discovery. The overlay driver is the default and recommended driver for multi-host networking, especially for Swarm services4.

* Use bridge networks

* Use macvlan networks

* Use ipvlan networks

* Use overlay networks

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asked 08/11/2024

bhaskar siddanadham

32 questions

User

Your answer: A B C D

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