200-901 Practice Test 22 — 15 Questions

Question 1

Which tool is used to explore and validate YANG models?

Accepted Answer

pyang. pyang is a Python-based tool for validating and converting YANG models.

Answer

Postman

Answer

cURL

Answer

YANGman

Question 2

When using the NX-API on Cisco NX-OS, which HTTP method is used to send CLI commands in JSON format?

Accepted Answer

POST. NX-API uses POST requests to the /ins endpoint with a JSON body containing the CLI commands and the type (cli_show or cli_conf).

Answer

PUT

Answer

GET

Answer

PATCH

Question 3

A network automation engineer is evaluating options for model-driven programmability on Cisco devices. Which THREE are valid YANG model sources or tools? (Choose three.)

Accepted Answer

pyang. pyang is a YANG tool, yangcatalog.org is a repository, and Cisco native models are valid sources. OpenConfig is a standard, but oc-interfaces is a model, not a source/tool.

Answer

NETCONF

Answer

oc-interfaces

Question 4

A developer wants to create a Webex webhook that triggers when a new message is posted in any room the bot is in. Which resource event should they subscribe to?

Accepted Answer

resource: 'messages', event: 'created'. To trigger on new messages, subscribe to 'messages' resource with 'created' event.

Answer

resource: 'messages', event: 'updated'

Answer

resource: 'rooms', event: 'created'

Answer

resource: 'memberships', event: 'created'

Question 5

A network automation engineer needs to retrieve the Layer 2 topology for a specific VLAN from Cisco DNA Center. Which API endpoint should be used?

Accepted Answer

GET /dna/intent/api/v1/topology/l2/{vlanID}. The endpoint GET /dna/intent/api/v1/topology/l2/{vlanID} is used to retrieve Layer 2 topology for a VLAN.

Answer

GET /dna/intent/api/v1/issues

Answer

GET /dna/intent/api/v1/site

Answer

GET /dna/intent/api/v1/network-device

Question 6

An engineer wants to trigger an EEM applet when a specific syslog message appears. Which event detector should be used?

Accepted Answer

event syslog pattern. EEM's syslog event detector triggers on syslog messages matching a pattern.

Answer

event timer cron

Answer

event interface

Answer

event cli pattern

Question 7

A developer is automating network configuration using Cisco DNA Center. They want to deploy a configuration template to multiple devices. Which API category should they use?

Accepted Answer

Change your network. Template deployment falls under 'change your network' API category.

Answer

Platform

Answer

Run your network

Answer

Know your network

Question 8

A developer needs to view the logs of a running Docker container with ID 'abc123'. Which command should be used?

Accepted Answer

docker logs -f abc123. docker logs -f follows the log output. docker exec runs a command inside container, docker attach attaches to a running container's I/O, docker inspect shows detailed info.

Answer

docker inspect abc123

Answer

docker exec -it abc123 logs

Answer

docker attach abc123

Question 9

When using RESTCONF on Cisco IOS XE, which URL retrieves the hostname configuration?

Accepted Answer

GET /restconf/data/Cisco-IOS-XE-native:native/hostname. The native YANG model Cisco-IOS-XE-native contains the hostname under /native/hostname.

Answer

GET /restconf/data/ietf-interfaces:interfaces

Answer

GET /restconf/data/openconfig-interfaces:interfaces

Answer

GET /restconf/data/Cisco-IOS-XE-native:native/interface

Question 10

A developer is writing a Dockerfile for a Node.js application. They want to set a build-time variable for the application version that can be changed without modifying the Dockerfile. Which instruction should be used?

Accepted Answer

ARG. ARG allows passing build-time variables. ENV sets environment variables that persist in the container. CMD and RUN are not for variable definition.

Answer

RUN

Answer

ENV

Answer

CMD

Question 11

A developer wants to retrieve the list of network devices from Cisco DNA Center. Which API endpoint should be used?

Accepted Answer

GET /dna/intent/api/v1/network-device. The GET /dna/intent/api/v1/network-device endpoint returns a list of network devices managed by DNA Center.

Answer

GET /dna/intent/api/v1/site

Answer

POST /dna/system/api/v1/auth/token

Answer

GET /dna/intent/api/v1/topology/l2/{vlanID}

Question 12

Which Cisco platform provides an API to retrieve a list of issues affecting the network?

Accepted Answer

Cisco DNA Center. Cisco DNA Center includes issues API under the 'run your network' category.

Answer

Cisco IOS XE

Answer

Cisco Meraki

Answer

Cisco Webex

Question 13

An administrator is automating the deployment of a new switch using Cisco DNA Center. Which API category should they use to provision the device with a configuration template?

Accepted Answer

Change your network. Template deployment falls under the 'change your network' API category in Cisco DNA Center.

Answer

Platform

Answer

Know your network

Answer

Run your network

Question 14

Which EEM applet action is used to execute a CLI command when an event triggers?

Accepted Answer

action 1.0 cli command "...". EEM uses 'action' with a sequence number and 'cli' keyword to execute commands.

Answer

action 1.0 event "..."

Answer

action 1.0 set 1.0 "..."

Answer

action 1.0 syslog msg "..."

Question 15

A Kubernetes pod has two containers: a main application and a sidecar proxy. They need to communicate via localhost. Which pod networking model allows this?

Accepted Answer

Pod network (containers share the same IP). Containers in the same pod share the same network namespace, so they can communicate via localhost.

Answer

Host network

Answer

Bridge network

Answer

Overlay network