200-901 Online Practice Questions and Answers

What are two advantages of YANG-based approaches for infrastructure automation? (Choose two.)

A. multi-platform vendor abstraction

B. compiles to executables that run on network devices

C. designed to reflect networking concepts

D. directly maps to JavaScript

E. command line driven interface

What operation is performed with YANG model-driven programmability in NX-OS?

A. configure a device with native and OpenConfig-based models

B. bootstrap a device that has a factory-default configuration

C. send CLI commands to a device and retrieve output in JSON format

D. run Linux commands natively on the device

Refer to the exhibit. A network engineer wants use API update information about device interfaces. The network devices are deployed in a Cisco DevNet Sandbox and have running interfaces. Which value is suitable as the headers variable?

A. {'Content-Type': 'application/yang.data+yaml', 'Accept': 'application/yang.data+yaml'}

B. {'Content-Type': 'application/yang.data+json', 'Accept': 'application/yang.data+json'}

C. {'Content-Type': 'application/yang.data+utf8l', 'Accept': 'application/yang.data+utf8'}

D. {'Content-Type': 'application/restconf.data+txt', 'Accept': 'application/restconf.data+txt'}

Which HTTP code group is issued when a request is received successfully, understood, and processed?

A. 2xx

B. 3xx

C. 4xx

D. 5xx

Refer to the exhibit.

Which RESTCONF request results in this response?

A. Option A

B. Option B

C. Option C

D. Option D

Refer to the exhibit.

The YAML shown contains an object "param0" that is equal to "Workflow1", a second object "param1" that contains an object called "list" which contains an array of two objects, "name" (equal to "VLAN_ID") and "value" (equal to a text value "198"), and finally a third object "param2" that is equal to "0". What is the equivalent message in JSON data format?

A. Option A

B. Option B

C. Option C

D. Option D

Refer to the exhibit.

An administrator attempts to perform a GET operation by using the Cisco IOS XE RESTCONF API to return the hostname of a device. The sequence diagram in the exhibit illustrates the HTTP messages observed. Which change to the API request resolves the issue?

A. Remove the -H 'Accept: application/yang-data+json' header.

B. Replace -u cisco:cisco parameter with -u `cisco:cisco'.

C. Change the request method from -X `GET' to -X `POST'.

D. Add the -H `Content-Type: application/yang-data+json' header.

Refer to the exhibit.

A network engineer must automate a workflow to get device volume data from Endpoint xAPI-enabled devices. The engineer prepares a Python script to send the request by adding an access token and device ID. However, the request receives a status code of 401. Which action solves the problem?

A. Access token must be changed with a valid one.

B. Network connectivity between client and API must be fixed.

C. Internal server problems that relate to code must be fixed.

D. API endpoint must be restarted to serve again.

What is a characteristic of Agile software development compared to the Waterfall method?

A. Agile method values comprehensive documentation whereas Waterfall focuses on working software.

B. Agile delivers at the end of a linear process whereas in Waterfall each phase depends on the deliverables of the previous phase.

C. In Agile, development iterations last from one to four weeks whereas the Waterfall method does not utilize iterations.

D. In Agile, code is deployed to production immediately whereas in Waterfall deployment is processed gradually on each cycle.

DRAG DROP

Refer to the exhibit.

Drag and drop the code from the bottom onto the box where the code is missing to construct a request that generates a security token and gets a list of network devices. Not all options are used.

Select and Place: