Vendor: Cisco
Certifications: Cisco Certified DevNet Associate
Exam Code: 200-901
Exam Name: Developing Applications and Automating Workflows using Cisco Platforms (DEVASC)
Updated: Sep 22, 2023
Q&As: 547
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A developer creates a program in which an object maintains a list of classes based on the observer pattern. The classes are dependent on the object. Whenever the state of the object changes, it notifies the dependent classes directly through callbacks. Which advantage of the observer pattern offers minimum dependencies and maximum flexibility between dependent objects or classes?
A. tight coupling
B. cohesion
C. mediation
D. loose coupling
Refer to the exhibit.
An administrator attempts to perform a GET using the Cisco IOS XE RESTCONF API to return the hostname of a device. The sequence diagram illustrates the HTTP messages observed. Which change to the API request resolves the issue?
A. Remove the -H `Accept: application/yang-data+json' HTTP header because it is not required.
B. Add -u cisco:cisco' in the end of the cURL command
C. Change the request method from -X "GET" to -X "POST"
D. Add Content-Type HTTP header with `application/yang-data+json' using -H `Content-Type: application/yang-data+json'
Which type of HTTP method is used by the Meraki and Webex Teams APIs to send webhook notifications?
A. HTTP POST
B. HTTP GET
C. HTTP HEAD
D. HTTP PUT
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